Oxygen System

OPERATOR & SERVICEMANUAL
NSN: 6515-01-588-3083
PN 9400-SEQ
MODEL 3000

CAIRE Inc.
2200 Airport Industrial Dr., Ste 500
Ball Ground, GA 30107
www.caireinc.com
Copyright © 2022 CAIRE Inc. CAIRE Inc. reserves the right to discontinue its products, orchange the prices, materials, equipment, quality, descriptions, specifications and/or processes
to its products at any time without prior notice and with no further obligation or consequence. All
rights not expressly stated herein are reserved by us, as applicable.
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Operator & Service Manual
WARNING: DO NOT OPERATE THIS EQUIPMENT WITHOUT FIRST READING AND UNDERSTANDING THIS MANUAL. IF
YOU ARE UNABLE TO UNDERSTAND THE WARNINGS AND INSTRUCTIONS, CONTACT YOUR EQUIPMENT PROVIDERBEFORE ATTEMPTING TO USE THIS EQUIPMENT; OTHERWISE, INJURY OR DAMAGE MAY RESULT.

DEFINITION OF SYMBOLS PAGE / WARNING PAGEWARNING: INDICATES A HAZARDOUS SITUATION THAT, IF NOT AVOIDED, COULD RESULT IN DEATH OR SERIOUS
INJURY.
CAUTION: Indicates a hazardous situation that, if not avoided, could result in minor or moderate injury.

NOTE: Indicates information considered important, but not hazard-related (e.g. messages relating to property damage).

SYMBOLS USED IN THE OPERATION OF SAROS
Symbols are frequently used on equipment in preference to words with the intention of reducing any possibility of misunderstanding caused by language differences. Symbols can also permit easier comprehension of a concept within a restricted space.

ISO 7000; GRAPHICAL SYMBOLS FOR USE ON
EQUIPMENT—INDEX AND SYNOPSIS
Portable operating temperature is -10C to 40C.
Base operating temperature range is 10C-40C.
Reg. # 0632
Portable humidity range is 15 to 95%. Basehumidity range is 30 to 75%. Reg. #2620

ISO 7010: GRAPHICAL SYMBOLS—SAFETY COLORS AND SAFETY SIGNS—REGISTERED SAFETY
SIGNSKeep away from open flame, fire, sparks.
Open ignition source and smoking prohibited.
Reg. # P003
Do not smoke near unit or while operating
unit. Reg. # P002

Keep away from rain, keep dry. Reg. # 0626

Type BF applied part (degree of protection
against electric shock). Reg. # 5333

Name and address of manufacturer. Reg. #3082

Warning. Reg. # W001

Date of Manufacture. Reg. #2497

The instruction manual must be read. Reg. #M002

Caution, consult accompanying documents.
Reg. # 0434A

INTERNAL SYMBOLS

Catalog Number. Reg. # 2493
Serial Number. Reg. # 2498
This way up. Reg. # 0623
Fragile, handle with care. Reg. # 0621

Stacking height. Reg #2473

O2

Keep away from flammable materials, oil andgrease.
Oxygen Output; The port from which the
Oxygen flows and where the tubing orinterface(standard nasal cannula) is connected.
IEC Icon for DC Power (Input) Indicatesequipment providing a particular degree ofprotection against electric shock, particularly
regarding: Allowable leakage current; Reliability of a proper ground connection.
Amperes (Current)
Alternating Current (AC)2 | 9735-SEQ M

Operator & Service Manual
Audible Alarm*; An audible indicator isprovided to announce an audible alarm forthe following: low purity after warm up,
flow rate out of range, warm battery, battery
communication lost, and low battery.
Alert (Yellow) Indicator*: When illuminated,
this indicates an awareness condition or
Caution.
Alarm (Red) Indicator*: In Normal
Mode, when illuminated, this indicates a
Malfunction and the SAROS will stop
operating. An immediate response isnecessary and contact a Service Technician.
ON/OFF (Standby); Powers the device ON
or OFF, but does not directly disconnect themain power.
Increase Flow Setting; Increases the flow
setting by 1.0 LPM increments or by 1 pulse
setting each time the button is pressed.
Decrease Flow Setting; Decreases the flow
setting by 1.0 LPM increments or by 1 pulse
setting each time the button is pressed.
Activates either Continuous Flow Mode or
Pulse Flow Mode Operation.

IEC 60601-1: MEDICAL ELECTRICAL EQUIPMENT- PART 1: GENERAL REQUIREMENTS FOR BASIC
SAFETY AND ESSENTIAL PERFORMANCEClassification; Class II Equipment, double
insulated.
Safety; Safety agency for CAN/CSA C22.2
No. 60601-1-08 M90 for medical electricalequipment*Alarms for the SAROS are considered information only
signals.
This product may be covered by one or more patents, US andinternational. Please visit our website below for the listing of
applicable patents. Pat.: www.caireinc.com/corporate/patents/ .

Utility; The Button that activates a utility
menu to access information or to change
settings.
External Power is Present Indicator; Indicatesthe presence of external power.
Battery Status Indicator; Shows the amountof charge remaining in the battery. Whencharging, battery displays as a “Waterfall”
Effect.
21 CFR 801.15: CODE OF FEDERAL REGULATIONSTITLE 21
Federal law restricts this device to sale by oron the order of a physician.
COUNCIL DIRECTIVE 2012/19/EU: WASTE ELECTRICAL AND ELECTRONIC EQUIPMENT (WEEE)
WEEE

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TABLE OF CONTENTS

DEFINITION OF SYMBOLS PAGE / WARNING PAGE............................................................................................... 2
INDICATIONS FOR USE.............................................................................................................................................. 8
CONTRAINDICATIONS................................................................................................................................................ 8
SAFETY GUIDELINES............................................................................................................................................. 8
BATTERY SAFETY................................................................................................................................................ 10
1.0 INTRODUCTION................................................................................................................................................... 11
1.1 GENERAL INFORMATION.............................................................................................................................. 11
1.2 SAROS OXYGEN SYSTEM SPECIFICATIONS.............................................................................................. 12
2.0 INTRODUCTION TO YOUR SAROS OXYGEN SYSTEM ................................................................................... 15
2.1 DESCRIPTION OF THE SAROS (9400-SEQ) ASSEMBLY—SHIPPABLE .................................................... 15
2.2 USER CONTROLS AND SYSTEM STATUS INDICATORS............................................................................. 17
2.3 RECOMMENDED OPERATING ENVIRONMENTS........................................................................................ 19
3.0 PREPARATION FOR USE AND INSTALLATION................................................................................................ 20
3.1 BATTERY INSTALLATION ONTO SAROS...................................................................................................... 20
3.2 LOCATING THE SAROS................................................................................................................................. 20
3.3 SAROS PERFORMANCE VERIFICATION TEST............................................................................................ 20
4.0 THEORY OF OPERATION.................................................................................................................................... 21
5.0 OPERATING INSTRUCTIONS............................................................................................................................. 26
5.1 OPERATING THE SAROS FOR THE FIRST TIME......................................................................................... 29
6.0 OPERATOR MAINTENANCE & SERVICE........................................................................................................... 32
6.1 CLEANING THE SAROS ................................................................................................................................ 32
6.2 ROUTINE MAINTENANCE ............................................................................................................................. 32
6.3 CLEANING OR REPLACING AIR INLET FILTER............................................................................................ 33
6.4 REPLACING THE HEPA FILTER..................................................................................................................... 34
6.5 RUN DEVICE AND FULLY DRAIN SAROS BATTERY.................................................................................... 35
6.6 SAROS PERFORMANCE VERIFICATION TEST............................................................................................ 35
6.7 REPLACING THE 9V BATTERY...................................................................................................................... 38
7.0 ALERTS, ALARMS, AND TROUBLESHOOTING TABLE................................................................................... 38
7.1 SYSTEM TROUBLESHOOTING GUIDE......................................................................................................... 39
8.0 REPROGRAMMING/CALIBRATION.................................................................................................................... 40
9.0 SHIPPING AND TRANSPORTING THE SAROS................................................................................................. 40
10.0 STORING AND DISCARDING THE SAROS...................................................................................................... 40

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11.0 OVERHAUL & REPAIR....................................................................................................................................... 41
11.1 TOOLS AND TEST EQUIPMENT................................................................................................................... 41
11.2 MAINTENANCE AND SERVICE PARTS........................................................................................................ 41
11.3 REPROGRAMMING AFTER OVERHAUL AND REPAIR PROCEDURES.................................................... 42
11.4 SAROS MAIN COMPONENTS...................................................................................................................... 42
11.5 ALARM INDICATIONS AND CODES............................................................................................................. 43
11.6 COMPREHENSIVE TROUBLESHOOTING GUIDE...................................................................................... 47
11.7 REMOVAL PROCEDURES............................................................................................................................ 49
11.7.1 BATTERY INTERFACE PLATE, RAIN GUARD, AND SLEEVE.................................................................. 49
11.7.2 INLET CAP REMOVAL................................................................................................................................ 50
11.7.3 REMOVE PCB ASSEMBLY......................................................................................................................... 53
11.7.4 PROPORTIONAL VALVE REMOVAL (5293-SEQ)...................................................................................... 54
11.7.5 COMPRESSOR FAN REMOVAL (9767-SEQ)............................................................................................ 55
11.7.6 BATTERY CABLE REMOVAL (9201-SEQ)................................................................................................. 56
11.7.7 RAIL REMOVAL........................................................................................................................................... 57
11.7.8 ATF & COMPRESSOR / TANK ASSEMBLY REMOVAL.............................................................................. 58
11.8 INSTALLATION PROCEDURES.................................................................................................................... 59
11.8.1 GENERAL PROCEDURE............................................................................................................................ 59
11.8.2 ATF & COMPRESSOR/PRODUCT TANK INSTALLATION......................................................................... 60
11.8.3 RAIL INSTALLATION................................................................................................................................... 62
11.8.4 BATTERY CABLE INSTALLATION.............................................................................................................. 63
11.8.5 COMPRESSOR FAN REPLACEMENT....................................................................................................... 65
11.8.6 PROPORTIONAL VALVE REPLACEMENT (5293-SEQ)............................................................................ 65
11.8.7 INSTALLATION OF PCB ASSEMBLY......................................................................................................... 66
11.8.8 POWER CONNECTOR REPLACEMENT (9766-SEQ)............................................................................... 69
11.8.9 MEMBRANE PANEL REPLACEMENT (9731-SEQ)................................................................................... 70
11.8.10 INLET CAP INSTALLATION (SP9756-SEQ)............................................................................................. 71
11.8.11 INSTALLATION OF THE SLEEVE & BATTERY INTERFACE PLATE....................................................... 73
12.0 SERVICE RECORDS & RETENTION................................................................................................................ 75
12.1 RECORD HOURS OF OPERATION AND SOFTWARE VERSION............................................................... 75
12.2 SERVICE AND MAINTENANCE RECORD................................................................................................... 76

ILLUSTRATIONS
Figure 2-1. SAROS Components.......................................................................................................................15
Figure 2-2. SAROS Components.......................................................................................................................16
Figure 3-1. Battery Installation...........................................................................................................................20
Figure 4-1. System Board Diagram....................................................................................................................22
Figure 5-1. Battery Installation...........................................................................................................................28
Figure 6-1. SAROS Components.......................................................................................................................33
Figure 6-2. Remove Cover.................................................................................................................................33
Figure 6-3. Filter.................................................................................................................................................34
Figure 6-4. Reinstall O2 Fitting/HEPA Filter.......................................................................................................34
Figure 6-5. Replacing 9V battery.......................................................................................................................38
Figure 11-1. Inside SAROS................................................................................................................................42
Figure 11-2. Removal of the three BIP screws...................................................................................................49
Figure 11-3. Removal of the three Rain Guard Screws.....................................................................................49
Figure 11-4. Removal of the Rain Guard...........................................................................................................49
Figure 11-5. Removal of Sleeve Alignment Ring................................................................................................49
Figure 11-6. Fiberglass Sleeve..........................................................................................................................50
Figure 11-7. Air Inlet Cover Removal.................................................................................................................50
Figure 11-8. Filter Screen & 9V Removal...........................................................................................................50
Figure 11-9. Inlet Cap Screw Removal..............................................................................................................50
Figure 11-10. Oxygen Outlet Tube Disconnect..................................................................................................51
Figure 11-11. Front Panel Flex Cable Disconnect..............................................................................................51
Figure 11-12. Thermistor Connector and 9V Battery Connector........................................................................51
Figure 11-13. Inlet Cap Power...........................................................................................................................519735-SEQ M | 5

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Figure 11-14. Tube Disconnect..........................................................................................................................52
Figure 11-15. Inlet Cap Removal.......................................................................................................................52
Figure 11-16. Detach Top Strut..........................................................................................................................52
Figure 11-17. Battery Power Wires for Battery Interface....................................................................................53
Figure 11-18. Communication Connector for Battery Interface..........................................................................53
Figure 11-19. ATF Thermistor Disconnect..........................................................................................................53
Figure 11-20. PCB Assembly.............................................................................................................................54
Figure 11-21. Proportional Valve Wire...............................................................................................................54
Figure 11-22. Proportional Valve Tube...............................................................................................................54
Figure 11-23. Replace Proportional Valve..........................................................................................................54
Figure 11-24. Remove Compressor Fan wire....................................................................................................55
Figure 11-25. Lift the Proportional Valve............................................................................................................55
Figure 11-26. Compressor Fan..........................................................................................................................55
Figure 11-27. Hall Effect Sensor........................................................................................................................56
Figure 11-28. Remove Wire Sleeve...................................................................................................................56
Figure 11-29. Cable Ties and Rails....................................................................................................................56
Figure 11-30. Cable Ties and Struts...................................................................................................................57
Figure 11-31. Left Strut......................................................................................................................................57
Figure 11-32. Right Strut....................................................................................................................................57
Figure 11-33. Kapton Tape.................................................................................................................................58
Figure 11-34. Exhaust tube................................................................................................................................58
Figure 11-35. Cable Ties....................................................................................................................................58
Figure 11-36. Silicone tubing..............................................................................................................................58
Figure 11-37. ATF ports......................................................................................................................................59
Figure 11-38. ATF bulkhead...............................................................................................................................59
Figure 11-39. Thread Locking Procedure...........................................................................................................59
Figure 11-40. Cable tie installation.....................................................................................................................59
Figure 11-41. ATF Bulkhead...............................................................................................................................60
Figure 11-42. Align.............................................................................................................................................60
Figure 11-43. ATF caps......................................................................................................................................60
Figure 11-44. Down pipe Hose...........................................................................................................................60
Figure 11-45. Cap..............................................................................................................................................61
Figure 11-46. Cable Ties....................................................................................................................................61
Figure 11-47. Open SAROS...............................................................................................................................61
Figure 11-48. Open SAROS...............................................................................................................................62
Figure 11-49. Right Strut....................................................................................................................................62
Figure 11-50. Route ATF wires...........................................................................................................................62
Figure 11-51. Secure..........................................................................................................................................62
Figure 11-52. Cable Tie Knots............................................................................................................................63
Figure 11-53. Wire Sleeve..................................................................................................................................63
Figure 11-54. Secure Battery Wires...................................................................................................................64
Figure 11-55. Slack............................................................................................................................................64
Figure 11-56. Secure ATF..................................................................................................................................64
Figure 11-57. Fan...............................................................................................................................................65
Figure 11-58. Compressor Fan Wire..................................................................................................................65
Figure 11-59. Proportional Valve........................................................................................................................65
Figure 11-60. Secure..........................................................................................................................................66
Figure 11-61. Connect........................................................................................................................................66
Figure 11-62. Screws.........................................................................................................................................66
Figure 11-63. Secure..........................................................................................................................................67
Figure 11-64. Connect........................................................................................................................................67
Figure 11-65. Fan Connector.............................................................................................................................67
Figure 11-66. Flow Tube....................................................................................................................................68
Figure 11-67. Tighten.........................................................................................................................................68
Figure 11-68. Tighten.........................................................................................................................................68
Figure 11-69. Cable Ties....................................................................................................................................69
Figure 11-70. Top strut.......................................................................................................................................69
Figure 11-71. Remove screws...........................................................................................................................69
Figure 11-72. Power Connector.........................................................................................................................69
Figure 11-73. Peel..............................................................................................................................................70
Figure 11-74. Clean............................................................................................................................................70
Figure 11-75. Remove PSA cover......................................................................................................................70
Figure 11-76. Apply new User Panel..................................................................................................................70
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Figure 11-77. O-ring attached............................................................................................................................71
Figure 11-78. Arrows on O-ring..........................................................................................................................71
Figure 11-79. Inlet Caps.....................................................................................................................................71
Figure 11-80. Breach Tube.................................................................................................................................71
Figure 11-81. Power Harness Wires..................................................................................................................72
Figure 11-82. Flex cable.....................................................................................................................................72
Figure 11-83. Ambient Air Thermistor.................................................................................................................72
Figure 11-84. Oxygen Outlet Tube.....................................................................................................................72
Figure 11-85. Inlet Cap mounting screws...........................................................................................................73
Figure 11-86. 9V battery.....................................................................................................................................73
Figure 11-87. Align covers and tighten...............................................................................................................73
Figure 11-88. Slide Sleeves...............................................................................................................................73
Figure 11-89. Second sleeve.............................................................................................................................74
Figure 11-90. Battery Interface Assembly..........................................................................................................74
Figure 11-91. Attach...........................................................................................................................................74
Figure 11-92. Align.............................................................................................................................................74

TABLES
Table 1-1. SAROS Specifications.......................................................................................................................12
Table 1-2. Pulse Mode Specifications................................................................................................................13
Table 1-3. Bolus Volume and Breath Rates.......................................................................................................13
Table 1-4. Power Accessory Specifications........................................................................................................13
Table 1-5. Battery Specifications........................................................................................................................13
Table 1-6. Independent Safety Testing ..............................................................................................................14
Table 1-7. SAROS .............................................................................................................................................14
Table 2-1. User Controls and Indicators.............................................................................................................17
Table 2-2. Recommended Operating Environments..........................................................................................19
Table 4-1. Battery Pack......................................................................................................................................24
Table 5-1. Typical New Battery Operating Time.................................................................................................27
Table 5-2. Minimum Remaining Time on Battery ..............................................................................................28
Table 5-3. Pulse Settings...................................................................................................................................30
Table 5-4. Utility Menu Screens.........................................................................................................................31
Table 6-1. Routine Maintenance .......................................................................................................................32
Table 7-1. Alarm Levels......................................................................................................................................38
Table 7-2. System Troubleshooting Guide.........................................................................................................39
Table 10-1. Storage Environment.......................................................................................................................40
Table 11-1. Maintenance and Service Parts.......................................................................................................41
Table 11-2. Alarm Indications and Codes...........................................................................................................43
Table 11-3. Troubleshooting Guide....................................................................................................................47
Table 12-1. Log the Results...............................................................................................................................75
Table 12-2. Sample SAROS Maintenance Record............................................................................................76
Table A-1. SAROS Performance Verification Checklist......................................................................................77

APPENDIX A
A-1. SAROS Performance Verification Checklist...............................................................................................779735-SEQ M | 7

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INDICATIONS FOR USE

SAROS OXYGEN SYSTEM IS INDICATED FOR THE ADMINISTRATION OF SUPPLEMENTAL OXYGEN. THE DEVICEIS NOT INTENDED FOR LIFE SUPPORT NOR DOES IT PROVIDE ANY PATIENT MONITORING CAPABILITIES.
A PHYSICIAN HAS PRESCRIBED A SPECIFIC OXYGEN FLOW SETTING TO MEET AN INDIVIDUAL’S NEEDS.
OXYGEN FLOW SETTINGS SHOULD BE ADJUSTED ONLY UNDER THE DIRECTION OF A PHYSICIAN.
WARNING: FEDERAL U.S. LAW RESTRICTS THIS DEVICE TO SALE BY OR ON THE ORDER OF A PHYSICIAN.

INDICATIONSWARNING: IN CERTAIN CIRCUMSTANCES, THE USE OF NON-PRESCRIBED OXYGEN CAN BE HAZARDOUS. THIS
DEVICE SHOULD ONLY BE USED UNDER THE DIRECTION OF A PHYSICIAN OR QUALIFIED CLINICIAN.
NOT FOR USE IN THE PRESENCE OF FLAMMABLE ANESTHETICS.
AS WITH ANY ELECTRICALLY POWERED DEVICE, THE USER MAY EXPERIENCE PERIODS OF NON-OPERATION AS A
RESULT OF ELECTRICAL POWER INTERRUPTION, OR THE NEED TO HAVE THE SAROS SERVICED BY A QUALIFIEDTECHNICIAN. SAROS IS NOT APPROPRIATE FOR ANY PATIENT WHO WOULD EXPERIENCE ADVERSE HEALTH CONSEQUENCES AS THE RESULT OF SUCH TEMPORARY INTERRUPTION.
USE OF AN OXYGEN MASK IS CONTRAINDICATED DUE TO THE POSSIBILITY OF REBREATHING EXHALED CARBONDIOXIDE.
WARNING: EXHAUST GAS MAY REACH HIGH TEMPERATURES DURING NORMAL OPERATIONS. USE CAUTION TO
AVOID TOUCHING THE EXHAUST PORT OF THE SAROS WHILE IN USE.

NOTE: Auditory alarms may not be heard in noisy environments and/or in tactical mode. Care providers must rely on visual indications todetermine if there are any alarms or other system malfunctions. Care providers should monitor the SAROS for any alarm conditions.

CONTRAINDICATIONSSAFETY GUIDELINES
These are Warnings and Cautions that apply to hazards or unsafe practices that could result in serious injury or property damage.
WARNING: FEDERAL U.S. LAW RESTRICTS THIS DEVICE TO SALE BY OR ON THE ORDER OF A PHYSICIAN.
WARNING: DO NOT USE SAROS IF IT HAS A DAMAGED POWER CORD OR PLUG.
WARNING: DO NOT DROP OR INSERT ANY OBJECTS INTO ANY OPENING ON THE DEVICE.
WARNING: DO NOT BLOCK THE AIR INLET OR THE EXHAUST VENT OF THE SAROS WHEN IT IS ON A SOFT SURFACE,
SUCH AS A LITTER, BED, CHAIR, CARPET, COUCH OR VEHICLE SEAT.
WARNING: DO NOT COVER THE DEVICE WITH A BLANKET, TOWEL OR SHEET, ETC.
WARNING: DO NOT STORE THE SAROS WITH THE BATTERY INSTALLED IN THE UNIT.
WARNING: DO NOT REMOVE THE COVER. THERE ARE NO USER-SERVICEABLE PARTS INSIDE THE DEVICE. ONLYQUALIFIED SERVICE PERSONNEL SHOULD REMOVE THE COVER OF THE DEVICE.

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WARNING: DO NOT MODIFY THIS EQUIPMENT WITHOUT AUTHORIZATION OF THE MANUFACTURER.
WARNING: DO NOT OPERATE THE DEVICE, COMPONENTS OR ACCESSORIES ON WET SURFACES OR IN STANDING
WATER AND DO NOT SUBMERSE IN WATER.
WARNING: THIS PRODUCT CAN EXPOSE YOU TO CHEMICALS INCLUDING NICKEL, WHICH IS KNOWN TO THE STATEOF CALIFORNIA TO CAUSE CANCER. FOR MORE INFORMATION, GO TO WWW.P65WARNINGS.CA.GOV.
WARNING: IN THE EVENT THERE IS A SERIOUS INCIDENT OCCURRING WITH THIS DEVICE, THE USER SHOULD IMMEDIATELY REPORT THE INCIDENT TO THE PROVIDER AND/OR THE MANUFACTURER. A SERIOUS INCIDENT IS DEFINEDAS AN INJURY, DEATH, OR POTENTIAL TO CAUSE INJURY/DEATH SHOULD THERE BE A REOCCURRENCE OF THE
INCIDENT. THE USER CAN ALSO REPORT THE INCIDENT TO THE COMPETENT AUTHORITY IN THE COUNTRY WHERE
THE INCIDENT OCCURRED.
CAUTION: Indicates a hazardous situation that, if not avoided, could result in minor or moderate injury.
CAUTION: Keep SAROS and the power cord away from hot surfaces or open flames.
CAUTION: SAROS should be located in a well-ventilated area to allow for adequate air intake.
CAUTION: Avoid the intake of airborne pollutants, smoke and fumes.
CAUTION: ONLY use this device with accessories specified by, or recommended by CAIRE Inc.
CAUTION: If SAROS has been dropped, damaged or exposed to water, please contact a qualified technician for inspection or possible repair of the device.
CAUTION: When using SAROS in any vehicle, be sure it is properly secured, belted or restrained.
CAUTION: LOCATE OXYGEN SUPPLY TUBING AND ALL POWER CORDS IN A MANNER TO PREVENT TRIPPINGHAZARDS.
CAUTION: DO NOT PLACE THE SAROS IN A SMALL, ENCLOSED SPACE, SUCH AS A BATHROOM, CLOSET, BAG OR
BOX WITH THE OXYGEN CANNULA OR TUBING LEADING OUT OF THE ENCLOSED SPACE.
CAUTION: DO NOT EXPOSE THE DEVICE TO TEMPERATURES OUTSIDE OF THE SPECIFIED RANGE OF OPERATING OR
STORAGE TEMPERATURES AS THIS MAY DAMAGE THE DEVICE.

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NOTE: THIS DEVICE DOES EXHAUST NITROGEN GAS. HOWEVER, THIS EXHAUST IS NOT SUFFICIENT TO DISPLACE OXYGEN IN
THE OPERATING ENVIRONMENT. NO ADDITIONAL SAFETY PRECAUTIONS NEED TO BE TAKEN TO ACCOUNT FOR THE NITROGEN EXHAUST.
NOTE: PROTECT ELECTRICAL POWER CORDS FROM SHARP EDGES OR ELECTRICAL SHOCK AND SERIOUS PHYSICAL INJURY
MAY
OCCUR.
NOTE: ONLY USE THE CAIRE INC. SUPPLIED AC POWER ADAPTER AND 24 VDC CABLE WITH THE SAROS. USE OF ANY OTHER
AC POWER ADAPTER OR DC CABLE MAY BE HAZARDOUS, CAUSE SERIOUS DAMAGE TO THE SAROS AND WILL VOID THE WARRANTY.
NOTE: AVAILABILITY OF AN ALTERNATE, OR BACK-UP, SOURCE OF SUPPLEMENTAL OXYGEN IS RECOMMENDED IN CASE OF A
POWER OUTAGE OR A MECHANICAL FAILURE OF THE DEVICE.
BATTERY SAFETYWARNING: DO NOT DISASSEMBLE, PUNCTURE, OR CRUSH THE BATTERY. BATTERY ELECTROLYTES MAY BE TOXICIF SWALLOWED AND CAN BE HARMFUL TO SKIN AND EYES. KEEP THE BATTERY AWAY FROM CHILDREN.
WARNING: DO NOT SHORT-CIRCUIT THE BATTERY’S METAL CONTACTS WITH METALLIC OBJECTS, SUCH AS KEYS
OR COINS. THIS MAY CAUSE SPARKS OR EXCESSIVE HEAT TO BE GENERATED.
WARNING: USE OF A DAMAGED BATTERY MAY CAUSE PERSONAL INJURY.
WARNING: THE BATTERY MAY EXPLODE AND CAUSE POTENTIAL INJURY IF EXPOSED TO A FIRE, OR DISPOSED OF
IN A FIRE.
WARNING: EXPOSING THE BATTERY TO WATER OR OTHER LIQUIDS MAY CAUSE PERSONAL INJURY.

CAUTION: DO NOT EXPOSE THE BATTERY TO TEMPERATURES ABOVE 140° F (60°C), SUCH AS IN A VEHICLE PARKED
IN THE SUN ON A HOT DAY.
CAUTION: IT IS NOT RECOMMENDED THAT THE BATTERY IS CHARGED BELOW 41° F (5° C) OR ABOVE 104° F (40° C).
CAUTION: ONLY USE THE BATTERY FOR ITS INTENDED PURPOSE.
CAUTION: PUSH LOCKING/UNLOCKING BUTTON BEFORE BATTERY INSTALLATION.

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1.0 INTRODUCTION
1.1 GENERAL INFORMATIONThis manual will familiarize you with information regarding the SAROS Oxygen System, Model 3000.
INTRODUCTION
The SAROS Oxygen System, Model 3000 with autoSAT® Technology (hereafter referred to as SAROS) is a portable medical
device used to extract oxygen from the atmosphere, concentrate it to greater than 90% and flow it through the oxygen outlet port.
The device will operate in Continuous flow or Pulse flow modes. In Continuous Flow Mode the oxygen is provided at a constantflow rate of 1, 2, or 3 LPM. In Pulse flow Mode, oxygen is supplied in a bolus at the beginning of each inspiration, providing a
selectable range setting of flow between 16 ml and 96 ml, in increments of 16 ml.
SAROS is BTP (Body, Temperature, and Pressure) compensated. It delivers oxygen by accounting for difference between ambientconditions and those found in the patient’s lungs (37°C).
SAROS operates from external AC power, 24VDC or from a rechargeable Battery. The system includes a “Smart Battery” charger
that recharges the Battery whenever the SAROS is connected to external power. The system monitors and controls both the powersource and the Battery Charger.
SAROS has a five minute warm up/stabilization period during which no alerts or codes are to be expected.
WARRANTYSAROS: 1 year or 1,000 hours, whichever comes first.
Battery: 1 year.
Power Supplies: 1 year.
INTENDED USE
The CAIRE SAROS oxygen system is intended for the administration of supplemental oxygen. The device is not intended for life
support nor does it provide any patient monitoring capabilities.

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1.2 SAROS OXYGEN SYSTEM SPECIFICATIONS
Dimensions• With battery

26.80” long x 4.375” diameter (68.1 cm long x 11.1 cm diameter)• Without battery

23.25” long x 4.375” diameter (59.1 cm long x 11.1 cm diameter)

Weight• With Battery

12.25 pounds (5.56 kg)• Without Battery

10.00 pounds (4.54 kg)

Flow Settings• Continuous Flow

1, 2, 3 LPM• Pulse flow

16, 32, 48, 64, 80, 96 ml

Continuous Flow Accuracy

1LPM: +/- 0.2 LPM
2LPM: +/- 10%
3LPM: +/- 10%

Oxygen concentration

93% +/- 3% for all flow settings

Maximum System Pressure

15 psig (204.7 kPa)

Oxygen Output Pressure

4.0 psig (128.9 kPa) nominal

Oxygen Concentration Status Indicator

Green Light = Normal Operation
Yellow Light Flashing = Warning or Caution, less than 85% ± 3%
Red Light = Abnormal Operation, less than 70% ± 5%

Nominal Sound Level<59 dB(A)Operating Environment• Temperature• Humidity

32º F to 109º F (0° to 43°C)
10% to 95%, Non-condensing, 82.4°F (28°C) Maximum Dew point

Storage Environment• Temperature• Humidity-4º F to 140º F (-20° to 60°C)
Up to 95% Non-condensing

Nominal Power
3 LPM Continuous Flow

≤130 Watts

Nominal Battery operating timeat 3 LPM Continuous Flow

30 Minutes

Battery Life

80% Nominal Capacity after 200 Charge/Discharge cycles

Continuous Flow Indication

Expressed in liters per minute (LPM)

Audible Alarm Indicators• Loss of Power/Hot Battery• Low Battery/Warm Battery• Low Oxygen Output• No breath detection• O2 Flow Outside Normal Limits• Low 9V battery• Unit Malfunction

Back-Up Alarm Power

9V Internal Battery

Filters

Air Inlet Filter, HEPA and Exhaust Filter

Device Classification

IEC Class I, Type BF Applied Part, IPX1
Table 1-1. SAROS Specifications

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Pulse Settings

16, 32, 48, 64, 80, 96 ml

autoSAT Technology

Servo-control to maintain consistent FiO2

Trigger Sensitivity

Adjustable settings of 1 (most sensitive), 2 and 3 (least sensitive)

Trigger Criteria

Cannula pressure has dropped below the trigger point (typically between 0.15 – 0.45 Cm of H2Oof negative pressure)

Minimum time between breaths

1.25 seconds (max. 3 consecutive breaths)

Response to Missing Breaths

Switch to Continuous Mode if no inspiration has been detected for 60 seconds with an audible
alarm.
Table 1-2. Pulse Mode Specifications

Bolus Size ml (± 15%)

Max Breath Rate with Full
Bolus Size

Max Breath Rate with Full Bolus Size within delivered
oxygen capture time per ISO 80601-2-67:2014

16

40

40

32

40

40

48

40

35

64

40

30

80

37

25

96

31

20

NOTE: At breath rate above Max Breath Rate, bolus size will be reduced proportionally.
Table 1-3. Bolus Volume and Breath Rates

AC Power Supply

24 VDC Cable

Input Voltage

100- 240 VAC, 50 – 60 Hz; 115V at 400Hz

20 – 28 VDC

Input Power

245 – 260 VA

10 A

Output Voltage

24 VDC-

Output Power

200 W

Table 1-4. Power Accessory Specifications

Output Voltage

14.6 VDC

Capacity

88.8 W-hours

Battery Life

80% Nominal Capacity after 200 Charge/Discharge cycles

Battery Recharge Time

1.5 hours typical (3 hours max) to achieve 80% capacity from a fully discharged battery while operating at 3 lpm
Table 1-5. Battery Specifications

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SAROS System and SAROS Concentrator, Model 3000
SafetyIEC 60601-1 :1988 + A1 :1991 + A2 :1995 + Corrigendum (6/95) EN 60601-1(1990) + A1(1993) +A2(1995) + A12(1993) + A13(1996) + Corrigenda (7/94)

Electromagnetic Compatibility

FCC 15B (Sec. 107 & 109), EN55011, EN60601-1-2 :2001, EN6100-3-2, EN61000-3-3,
IEC61000-4-2, IEC61000-4-3, IEC61000-4-4, IEC61000-4-5, IEC61000-4-6, IEC61000-4-8,
IEC61000-4-11, IEC 60601-1- 2 :2001, RTCA DO 160

AC Power Supply
SafetyIEC 60601-1:1988 + A1:1991 + A2:1995

Electromagnetic Compatibility

FCC 15B (Sec. 107 & 109), EN55011, EN60601-1-2 :2001, EN6100-3-2, EN61000-3-3,
IEC61000-4-2, IEC61000-4-3, IEC61000-4-4, IEC61000-4-5, IEC61000-4-6, IEC61000-4-8,
IEC61000-4-11, EN55014-1

24 VDC Cable
SafetyPortions of IEC 60601-1:1988 + A1:1991 + A2:1995

Electromagnetic Compatibility

FCC 15B (Sec. 109), EN55011, EN60601-1-2 :2001, IEC61000-4-2, IEC61000-4-3, IEC61000-44, IEC61000- 4-6, IEC 60601-1-2 :2001

Battery
SafetyUL60950-1, IEC 60601-1:1988 + A1:1991 + A2:1995, IEC 62133, UN Transportation Tests T1-T8

Electromagnetic Compatibility

EN 61000-6-3 :2001 (EN55022 :1998+A1 :2001+A2 :2003), EN61000-6-1 :2001, EN61000-4- 2:1995+A1 :1998, EN61000-4-3 :2002
Table 1-6. Independent Safety Testing

List of Items Furnished
Concentrator

Standard Power Sources
AC Power Adapter(9726-SEQ)

AC Power Adapter Cord
(3588-SEQ)

24 VDC Cable(9727-SEQ)

Battery(9723-SEQ;
reorder PN 20952897)

Table 1-7. SAROS

Also includes: Nasal Cannulas (2), Operator and Service Manual, a spare HEPA and air intake filter.
No additional parts required for standard operation.
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2.0 INTRODUCTION TO YOUR SAROS OXYGEN SYSTEM

This operator & Service Manual will inform you about the use and care of the SAROS and its standard components. Please readthoroughly all of the information in this manual before operating the SAROS and receive proper training on the use and care ofthis device.
A PHYSICIAN HAS PRESCRIBED SUPPLEMENTAL OXYGEN AS PART OF A TREATMENT PLAN TO MEET AN INDIVIDUAL’S CLINICAL NEEDS. OXYGEN FLOW MODES AND SETTINGS SHOULD BE ADJUSTED ONLY UNDER THE
ADVICE OF A PHYSICIAN OR CLINICIAN.
A representation of the major features of the SAROS hardware interface are shown below:• Membrane Panel containing:		- Five tactile buttons allow control of all user controllable settings		- Five variable intensity LED indicators provide overall status		- An 8 character LCD display shows settings• 9V Battery• Oxygen Outlet Port
• External Power Connector• Battery• Simplified User Instructions Label• Main / Rating Label• Air Inlet Filter• HEPA Filter
2.1 DESCRIPTION OF THE SAROS (9400-SEQ) ASSEMBLY—SHIPPABLE
Become familiar with the key features of the SAROS and the user control panel.
ADDITIONAL PARTS
24 VDC Cable: 9727-SEQ
AC Power Supply: 9726-SEQ with Power Cord 3588-SEQ

External
Power
Connector

Air Inlet Filter(9798-SEQ)
9V Battery(9257-SEQ)

Cover

Membrane
Panel

OxygenOutlet PortSAROS Shell

HEPA Filter(4770-SEQ)

Simplified User
Instructions
Label (behind)

Battery

Main/Rating Label(underneath)
Figure 2-1. SAROS Components

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FRONT – CONTROL PANELBACK – SIMPLIFIED INSTRUCTIONSAir InletTOP

BOTTOM – WITHOUT BATTERYOxygenOutlet Port

Main/Rating Label

External
Power
Connector
Battery
Connector

BOTTOM WITH BATTERY
Exhaust Vent

Push Button to
Release Battery
Figure 2-2. SAROS Components

Input/Output Connections
Oxygen Outlet Port: Oxygen supply tubing or a cannula is attached to this port.
Air Inlet Filter: Ambient air is drawn into the device through the air inlet located at the top of the device. This air inlet filter prevents dust /debris from entering the SAROS and should be cleaned regularly.
External Power Connector: The SAROS AC Power Adapter or 24 VDC Cable connects to this receptacle.
Exhaust Vent: Exhaust air from the SAROS leaves the device from this vent.

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2.2 USER CONTROLS AND SYSTEM STATUS INDICATORSThe SAROS User Control Panel displays important operating information. This section will help you understand this operating
information.
Normal Mode provides all LED indications with full brightness, full audio indicator sound and LCD backlight. The system
always starts up in Normal Mode. Normal Mode can be changed to Tactical Mode by depressing the Utility Button and then the
Decrease button to change from TACT=ON to TACT=OFF. Normal Mode is indicated by an “N” on the LCD.
Tactical Mode is provided for operation where noise and light may compromise a situation. In these situations, the LED indicators will be off and the audio indicator sound is reduced. Tactical Mode can be changed to Normal Mode by depressing the Utility
Button and then the Decrease button to change from TACT=ON to TACT=OFF. Tactical Mode is indicated by a “T” on the LCD.
Green, Yellow, and Red Indicators on the front panel indicate the operating condition of the device. For additional informationon these indicators see the Alerts, Alarms and Troubleshooting Table in this manual.
ON/OFF (Standby) Button -Green Indicator: This button powers the device ON or powers it OFF. The Green Indicator is illuminated when the device is powered ON and operating in the Normal Mode and off when operating in
Tactical Mode.
Increase or Decrease Flow Setting Button: Use these buttons to set the flow or to make selections in the Utility
Menu.
Delivery Mode Button and Indicator (Blue): The SAROS contains a button to toggle between Continuous Flowand Pulse Flow mode. The Pulse Flow mode activates autoSAT Technology – as breath rate changes, the system
adjusts to provide a consistent bolus size. The Pulse Flow Mode allows a significant increase in operating time
when powered by a Battery. When the Pulse Flow Mode is activated, the blue Flow Mode Indicator illuminates
and a pulse of oxygen is delivered with each inspiratory effort. When the pulse of oxygen is delivered, the flowmode indicator turns off.
ALERT (Yellow) Indicator - Low and Medium Priority Alerts: In Normal Mode, when illuminated, this indicatesa low priority awareness condition or Caution. Continue to use your system and refer to the Alerts, Alarms, andTroubleshooting Table for the proper response. A flashing yellow indicates a medium priority alert. A prompt
response is necessary. In Tactical Mode, a blinking star “*” indicates an alert.
ALARM (Red) Indicator – High Priority Alarms: In Normal Mode, when illuminated, this indicates a high priority alarm condition. An immediate response is necessary. Refer to the Alerts, Alarms, and Troubleshooting Tableand contact a qualified service technician. In Tactical Mode, a blinking star “*” indicates an alert.
Buzzer: An audible alarm (or buzzer) is used to alert you to the operating condition of the device, either a warning
or failure, and to confirm a valid key press by the user.
Flow Setting Indicator: This is the main focus on your control panel. A clinician will correctly set the prescribedflow for either the CX - Continuous Flow Mode at X LPM (1, 2 or 3) and/or the PXXX - Pulse Flow Mode XXX
ml (16, 32, 48, 64, 80, 96) settings. Each time the device is turned ON, it will operate at C3 (3 LPM) continuous
flow in the Normal Display Mode.
Battery Status Gauge: This indicator displays the charge remaining in the Battery. When the Battery is fully
charged all 5 gray bars are illuminated. Each gray bar represents approximately 20% of the total Battery charge.
When the Battery is being charged, the charge indicator bars will waterfall. If the Battery is not installed, or if it isimproperly installed, the Battery Status Gauge will not be illuminated and Time on Battery is not displayed.
External Power is Present Indicator: When the SAROS is properly plugged in and is using the AC or 24 VDC
Cable, this indicator will illuminate on the User Control Panel in Normal Mode.
Table 2-1. User Controls and Indicators

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Examples of LCD display at Power Up

Example of LCD Display indicates the following information:
Continuous Flow at 3 LPM, Tactical Mode, Battery between 81% and 100% of
capacity, 29 minutes of battery operating time remains. Battery symbol is animatedwith a waterfall effect when charging.

Example of LCD display during Continuous Mode

Example of LCD Display indicates the following information:
Continuous Flow at 2 LPM, Normal Mode, Battery between 61% and 80% of capacity, 24 minutes of battery operating time remains.

Example of LCD display during Pulse Mode

Example of LCD Display indicates the following information:
Pulse mode at bolus size of 48 mL, Tactical Mode, Battery between 61% and 80%
of capacity, 1.1 hours of battery operating time remains. Battery symbol is animatedwith a waterfall effect when charging.

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2.3 RECOMMENDED OPERATING ENVIRONMENTS
The following chart provides important information concerning the recommended operating environments, or operating conditions, for optimum use of the device.
Operating Temperature
Operating Humidity
Transport/Storage Temperature
Electrical
AltitudePlacement
Environment
Operating Time

0º C to 43º C
10% - 95% at an 82.4° F (28° C) dew point-4º F to 140º F (-20º C to 60º C)
Humidity: Up to 95% Non-Condensing
Use no extension cords or electrical outlets controlled by a switch.
0 – 18,000 feet (0 - 5,486 meters)
DO NOT block the air inlet or the exhaust vent. Place device a minimum of 3 inches (7.5cm) away from walls, draperies, furniture, other equipment, etc.
Must be smoke, pollutant, and fume free.
24-hours per day when connected to an external AC Power Adapter or 24 VDC Cable.
Table 2-2. Recommended Operating Environments

WARNING: OPERATING THE SAROS OUTSIDE OF THE RECOMMENDED OPERATING TEMPERATURE ENVIRONMENT
MAY NEGATIVELY IMPACT DEVICE PERFORMANCE, MAY CAUSE DAMAGE TO THE DEVICE AND WILL VOID THE WARRANTY IF THIS OCCURS.
WARNING: OPERATING THE SAROS UNDER HIGH AMBIENT TEMPERATURE CONDITIONS MAY RESULT IN HIGH PRODUCT GAS TEMPERATURE.
NOTE: When moving the SAROS from an extreme temperature environment, please allow time for your device to acclimate to the recommended operating temperature environment.
OPERATION CHARACTERISTICS AT EXTREME TEMPERATURESSAROS has been designed to optimally operate at temperatures between 0ºC – 43ºC. When operating the system in environments
outside these temperatures, the system performance is characterized as follows:
While operating in temperatures between -13ºC – 0ºC and 43ºC – 49ºC, SAROS is capable of maintaining flow and purity in continuous and pulse flow modes, while operating on all power sources with the exception of Battery charging.
While operating in temperatures above 49ºC the purity of the oxygen may fall below 90% and the operating time on the battery
may be reduced. If SAROS is operating on external power at this temperature, the system may not transition to battery operation
due to the safety circuit in the Battery being too hot. During discharge, the SAROS software will shut the system down ifinternal battery cell temperature exceeds 59°C. While the Battery is charging, software will interrupt charger operation when theinternal battery temperature exceeds 40°C or temperature is less than 5°C.
While operating in temperatures up to 60ºC, the purity of the oxygen may fall below 90% and the unit may not operate on battery
due to the high temperature and internal safety circuit in the battery. If the unit does operate on battery, the time may be greatly
reduced.
THE PROPER LOCATION
Select a location for the device that avoids the intake of smoke, fumes and pollutants. Correct placement of the device should
allow intake of air through the air inlet filter at the top and allow exhaust air to freely leave the exhaust vent at the bottom of thedevice.
Locate the device such that the alarms can be heard and position the oxygen supply tubing in such a way that it does not kink or
occlude. Keep the SAROS at least five (5) feet (1.5 m) away from hot, sparking objects or open flames.
DO NOT locate the device near flammable materials or cleaning agents or in the direct path of any heat source, such as a stove,
range, heat register or vehicle heater.

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3.0 PREPARATION FOR USE AND INSTALLATION

Pre-Delivery Check List
Before delivering the device, check and log the status of the following:
Parts Inventory – Verify that each SAROS is provided with the following items:• SAROS Concentrator• AC Power Cord
• AC Power Adapter• 24 VDC Cable• Battery• Nasal Cannulas (2)• Operator and Service Manual• Spare Filter Set

3.1 BATTERY INSTALLATION ONTO SAROS
1. Remove connector and pin caps.
2. Press the Latching Pin Release Button inward on the bottom of the Battery prior to installing onto the SAROS.
NOTE: It is important to depress the latching pin release button prior to installation.
3. Insert the Battery onto the SAROS by aligning the Battery Connector of the Battery into the connector opening at the bottom of
the unit. Battery is properly engaged when the latch pin is snapped into place.
Battery
Connector

Latching Pin
Release
ButtonBattery Connector of
SAROS
Figure 3-1. Battery Installation

3.2 LOCATING THE SAROS
Place the SAROS in a well-ventilated area. Be sure the air inlet and exhaust vent are not obstructed.
Position the SAROS so all audible and visual indicators or alarms can be easily seen and heard.
Connect the AC Power Adapter to External Power Receptacle located on top of the device and plug the device into a grounded AC
Power outlet, connect to a DC Power source with the 24 VDC Cable, or be sure there is a fully charged Battery installed.

3.3 SAROS PERFORMANCE VERIFICATION TEST
It is recommended that the SAROS performance verification test be preformed upon initial receipt of the device to confirm proper
operation before the unit is distributed or used in the field. The full procedure is listed in section 6.6 on page 35–37.

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4.0 THEORY OF OPERATIONBASIC THEORY OF OPERATIONSAROS Oxygen System uses a variable speed compressor to provide both positive and negative air pressure and is driven by aBrushless DC Motor (BLDC) and drive system.
The ATF® Concentrator Module accepts positively and negatively pressurized air and extracts oxygen from this air using the Pressure Swing Adsorption (PSA) process. The ATF module sub-components consist of patented rotary valves, manifold, housing,sieve beds, and a stepper motor / gear drive system. The rotary valve system channels the gas in a sequential manner to each of
the sieve beds. Each bed is pressurized to force the oxygen through the sieve and into the product tank while most of the nitrogenis separated and remains in the sieve. Once the process is maximized then the sieve beds are purged of the nitrogen. The purged
nitrogen is then vented to atmosphere through the exhaust vent. The process is continuously repeated in each sieve bed.
The flow of produced oxygen passes from the product tank to a flow and concentration monitoring and control system which
utilizes a proprietary ultrasonic flow and concentration sensor. It then continues through a flow control valve to accurately control
the flow of oxygen in continuous and pulse flow modes. The oxygen then passes through a HEPA filter and is delivered to theoxygen outlet port.
The oxygen flow rate and mode are selected by the user. In continuous flow mode, oxygen is delivered continuously at rates of 1,
2, and 3 LPM and, in pulse flow mode; a bolus is delivered at the beginning of each inspiration with selectable volume delivery
approximately equivalent to rates between 16 and 96 mL.
The SAROS electronic system, together with embedded operational firmware, provide the means to manage power, control
oxygen production, monitor safety functions and interface with the user. Power management functions include switching between
various power inputs, driving the compressor, ATF stepper motor, and proportional valve, monitoring battery status and charging
when power is available from an external source. System management functions include monitoring all flow, pressures, concentrations and safety functions. User Interface components such as buttons, illuminated indicators, LCD display and audio transducer
are also monitored or controlled. The User Interface informs the user of the system status, allows the user to select a continuous
flow or pulse mode flow setting and the ability to set the desired flow rate. The Utility Button on the User Interface also allows
the User to obtain information about the system – hours of operation, software version and 9V battery status - or make selections
on various features such as Tactical or Normal Mode, Trigger Sensitivity Adjustments, Buzzer Loudness and LCD Brightness andContrast.
ATF® CONCENTRATOR MODULE
The SAROS Oxygen System, Model 3000 with autoSAT Technology uses a passive system to separate oxygen from air. Air
flows into the SAROS where it is filtered and then enters the compressor. Pressurized air flows from the compressor into the ATF
Concentrator Module where it is separated into oxygen and nitrogen components. The air separation process uses a rotary valve
system to force air through a series of pressurized sieve beds. Through a process known as “pressure swing adsorption,” nitrogenmolecules are collected on an adsorbent material or zeolite allowing the concentrated oxygen to be forced through a sieve bed into
the product tank. The nitrogen molecules are then purged from the adsorbent material using a vacuum pressure cycle.
Oxygen flows from the product tank through a sensor that measures flow and concentration and then through a HEPA filter. A flow
control valve regulates the flow of concentrated oxygen. The process is continuously repeated during operation.
COMPRESSORThe SAROS compressor is a two-head variable speed compressor driven by a highly efficient Brushless DC (BLDC) motor.
When air flows into the compressor, it passes through an air inlet filter that filters out impurities. Using one head, the compressor
takes in filtered air, compresses it and channels the compressed gas to the ATF Module. The second head pulls a vacuum on the
ATF module and exhausts nitrogen rich gas through an exhaust outlet muffler to suppress the noise and then to the exhaust vent at
the bottom of the device.
BRUSHLESS COMPRESSOR MOTOR DRIVER (BCMD)
The BCMD drives the compressor motor based on the input power from either the battery, the AC Power Adapter or the 24 VDC
Cable.
COOLING FAN
A cooling fan is installed in the SAROS to provide forced air cooling to the various components in the system that generate heat.
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POWER BOARD
The Power Board takes external power that comes into the SAROS from the AC Power Adapter, 24 VDC Cable or Battery andmonitors and controls power distribution to the rest of the SAROS system. The Power Board also drives the cooling fan.
SYSTEM BOARD
The System Board is the center of nearly all the SAROS functions. The System Board is a micro controller-based system thatmonitors system dynamics such as temperatures, pressures, ATF stepper motor and proportional valve, product flow and concentration, and the Users’ input, indicators and buzzer operation and external communications. It measures temperature of theoxygen, compressor motor, ambient temperature, and ATF temperature, BCMD, Power Board and the Battery.
The System Board utilizes a proprietary ultrasonic flow and concentration sensor and a flow control valve to accurately control
the flow oxygen in the various flow delivery modes.

Figure 4-1. System Board Diagram

CONTROL PANELThe Control Panel provides a user interface consisting of a membrane panel keyboards, Liquid
Crystal Display (LCD), external power present indicator, Battery capacity indicator, alarm
status indicators, and a buzzer. The user interface informs the user of the system status and allows the user to set the desired flow modes and flow rate – continuous or pulse, display mode
– normal or tactical, set up system parameters and acquire system information.

CONTINUOUS FLOW MODE
The user may set the SAROS oxygen flow rate and mode. Continuous Flow Mode delivers a constant flow of oxygen to the Oxygen Outlet Port at settings of 1, 2, and 3 LPM. Within the SAROS, concentrated oxygen is stored in a product tank at pressures in
the range of 5 – 9 psi and is back-pressure compensated. This pressure gives Continuous Flow Mode the capability to deliver theindicated flow rate to the patient even if extension tubing is used, up to 50 feet long. In addition, the SAROS Continuous Flow
Mode is fully compatible with humidifier use.
PULSE FLOW MODE WITH autoSAT TECHNOLOGYThe SAROS Pulse Flow Mode with autoSAT Technology delivers a high flow of oxygen at the very beginning of eachinspiratory effort. The approach is based on the manner in which gas is delivered into a patient’s airway. The user may
select pulse volume delivery rates between 16 and 96 ml. Pulse durations vary between 100 milliseconds and 500 milliseconds due to dead space considerations. Maximum cannula length is 7 feet.
The fundamental approach to triggering and controlling the oxygen bolus in Pulse Flow Mode is: The user may select pulse trigger sensitivity in settings 1 (most sensitive), 2, or 3 (least sensitive). The pulse will be triggered when the system meets all thefollowing criteria: The cannula pressure has dropped below the trigger point (typically between 0.15 and 0.45 cm H2O). At least
1.25 seconds has passed since the last pulse began.
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The SAROS autoSAT Technology consistently maintains the FiO2 by adjusting to the patient’s respiratory rate. As their rate increases, the autoSAT feature servo controls the device to automatically increase oxygen output to ensure uninterrupted delivery of
the set bolus volume. autoSAT provides the patient with unparalleled performance without limiting available oxygen, enabling thesystem to automatically adjust to increased oxygen demands that often occur.
NOTE: To Equipment Provider: The following oxygen administration accessories are recommended for use with the Oxygen Concentrator:• Nasal Cannula with 7 feet (2.1 m) of tubing: PN 5408-SEQ• Firebreak: CAIRE Part Number 20629671
A firebreak is required for use with any cannula.
• CAIRE offers a firebreak intended to be used in conjunction with the oxygen concentrator. The firebreak is a thermal fuse to stop the flow ofgas in the event that the downstream cannula or oxygen tubing is ignited and burns to the firebreak. It is placed in-line with the nasal cannulaor oxygen tubing between the patient and the oxygen outlet of the oxygen concentrator. For proper use of the firebreak, always refer to the
manufacturer’s instructions (included with each firebreak kit).
UTILITY MODE
A User or Service Technician can access the Utility Mode function by pressing using the Utility Button on the control panel. All
information is displayed on the LCD. Advance to the next feature in the Utility Mode by depressing the Utility Button. The “+” or“-“ button is used to toggle when a feature is selected. Pressing the Flow Mode button takes you back one step.

unit.

SERVICE MODE FUNCTIONS
Factory maintenance or service updates may sometimes be required on the SAROS. Factory and qualified factorytrained technicians can access service mode software functions by using the Service Port located on the top of the

POWER SUPPLIESSAROS may operate from either an AC Power Adapter, 24 VDC Cable or Battery. When power is available from an external
supply, the SAROS will draw from the external source rather than depleting the Battery. Connection to external power is indicatedwhen the External Power Present Indicator located on the Control Panel is illuminated.
AC POWER ADAPTER
The AC Power Adapter is a universal input type, capable of accepting 100 – 240 VAC, 50/60 Hz. It is capable of delivering up to
200W at 24 VDC output. The input cord requires a grounded receptacle. Country specific cords may be used with the AC Power
Adapter, as the supply is equipped with a universal input receptacle. When used in a medical care facility, international safety
standards require the use of hospital grade AC power cord with the SAROS.
The AC Power Adapter contains protection circuits for output over-current, input overvoltage, and internal over-temperature conditions. If any of these conditions exist, output
power will be a Loss of Power Alarm. Refer to Alert, Alarms and Troubleshooting Table.
These three conditions are self-resetting, such that output power will resume when protection
circuits fall back into acceptable operating ranges.
To adapt the SAROS to 220 VAC, just utilize the country cord or a plug adapter. An inverter
to step up voltage/current is not needed.
24 VDC CABLE
The 24 VDC Cable is intended for use with 24 volt power sources, such as thosefound in various vehicles.

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RECHARGEABLE BATTERYThe Battery allows operating the SAROS away from AC or DC power. The Battery used with
the SAROS contains Lithium Ion battery cells, similar to those used in laptop computers andcell phones. The SAROS Battery is approximately 88.8 W-hours in capacity and provides
an output voltage of 12V to 16.6V. The Battery connects to the bottom of the SAROS and issecured by a mechanical latching mechanism. The Battery can be recharged when the SAROS
is connected to the AC Power Adapter or the 24 VDC Cable. The Battery Gauge indicator on
the SAROS LCD will have a “waterfall” effect when the Battery is charging. The fastest way
to recharge the Battery is using the AC Power Adapter.
The Battery has an integral safety circuit that prevents over charge, over discharge or damage due to an external short circuitof the pack. An Integral fuel gauge communicates battery voltage, current, charge state, and temperature. Based on the voltage
supplied by the Battery, the system is configured to optimize battery charging by regulating the charging voltage and current asfollows:
Battery Pack Output Voltage (VDC)

Charging Voltage (VDC)

Charging Current (A)< 10.0

FAULT

FAULT

10.0 – 11.9

16.6

0.55 to 0.70

> 12.0

16.6

5.60

Table 4-1. Battery Pack

When the SAROS is operating on Battery power, the LCD displays an estimate of the amount of time the unit can operate at thecurrent settings, within +/- 5 minutes. When the SAROS is operating on Battery and the time on battery falls below 15 minutes,
the LCD time on battery characters will flash to indicate a low battery condition.
The capacity of the SAROS Battery is determined by electronics and software. While the SAROS Battery allows the concentrator to operate at its full range of capabilities, the primary purpose of the Battery is to allow an autonomous system while moving
between AC or DC power sources. The SAROS’s Battery, like all lithium ion batteries, is susceptible to permanent damage fromexcessive heat. Exposure to excessive heat may shorten the Battery’s service life.
The Battery contains multiple temperature sensors to monitor battery cell temperature. The amount of heat the Battery can safely
endure varies depending on how the Battery is being used. During discharge, the SAROS software will shut the system down ifinternal battery cell temperature exceeds 59°C. While the Battery is charging, software will interrupt charger operation when theinternal battery temperature exceeds 40°C or temperature is less than 5°C. In both of these cases, when internal battery cell temperature returns within these limits, the SAROS will resume normal operation. Operation near these temperature limits will notdamage the Battery, but are in place to ensure that the service life of the Battery is preserved.
Heat in the Battery is generated during discharge, and can also be the result of operating the SAROS in high ambient temperatures. The amount of internally generated heat varies with the flow setting – higher flows induce greater Battery heating. Whilehigh ambient temperatures are typically the result of operation on a hot day, running the SAROS with inadequate ventilation canalso cause additional heat. Always ensure that the SAROS is operated in a well-ventilated space, the Air Inlet Filter is clean, andintake and exhaust vents are unobstructed.
CHARGING ALGORITHM
The charging algorithm is performed by the Power Board software and involves three basic decisions:
1. When to start charging
2. How fast to charge
3. When to stop charging
Charging begins when Battery voltage falls below 90% relative capacity. The charging current is limited by the charger capability and the rated capacity of the Battery. Under certain conditions, the SAROS may not have enough external power available tocharge the batteries at the full rate. In this case, the charging rate will be limited to the available power. As the Battery accumu-

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lates charge, the charging current required will eventually fall. Battery charging will cease when the Battery voltage is greaterthan 16V, charge current is less than 0.66A, and relative charge is greater than 93%.
The software will only charge when the Battery temperature is at or below 30°C. The software will always run the cooling fan
whenever the charger is enabled. The Battery Charger is disabled and the cooling fan is set to maximum whenever the Battery
temperature exceeds 40°C. The Battery charger is disabled when temperature is less than 5°C.
All lithium ion batteries self-discharge at very low rates when not in use. SAROS Batteries are shipped from CAIRE Inc. in apartially charged state (nominally 30%). Do not store the SAROS with the battery installed in the unit. Remove the battery fromthe unit when storing to prevent damage to the battery and the unit. CAIRE Inc. recommends a first in, first out rotation of Battery
inventory for maximum service life.
WARNING: INDICATES A HAZARDOUS SITUATION THAT, IF NOT AVOIDED, COULD RESULT IN DEATH OR SERIOUS
INJURY.
WARNING: DO NOT OPEN OR HANDLE EXCEPT AT A STATIC FREE WORKSTATION. DO NOT REMOVE COVER WITHOUTESD PROTECTION.
WARNING: DO NOT STORE THE SAROS WITH THE BATTERY INSTALLED IN THE UNIT.
WARNING: WHEN PERFORMING SERVICE AND REPAIR PROCEDURES DO NOT TOUCH EXPOSED CIRCUITS DURING
THE MAINTENANCE. DO NOT TOUCH MOVING PARTS.
CAUTION: The SAROS contains electrostatic sensitive components.

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5.0 OPERATING INSTRUCTIONSBEFORE OPERATING
This Operator & Service Manual serves as your reference to help you operate and maintain the device. If you have any questions
or concerns please contact a qualified representative, or CAIRE Inc.
WARNING: PROTECT THE SAROS AND THE AC POWER ADAPTER AND 24 VDC CABLE FROM ALL FLUID SPILLS OR
FLUID DRIPS TO AVOID POSSIBLE SHOCK HAZARDS.
CAUTION: Always check that the air inlet and the exhaust vent of the device are not blocked and the air inlet filter is clean
before using your device.
POWERING ON YOUR SAROSThe SAROS comes complete with the concentrator, AC Power Adapter, power cord, 24 VDC Cable, Battery, and extra filters. The
SAROS is a lightweight portable and stationary source of supplemental oxygen. The device is capable of being operated directlyfrom three different power sources: AC power adapter, DC power supply, and battery. To power the SAROS on, connect a sourceof power and press and hold the ON/PFF button for 2–3 seconds.
GENERAL CHARGING INFORMATIONThe SAROS charges the Battery when external power (AC or DC) is present and when the Battery temperature is below a safe
charging temperature. When external power is disconnected, the device will automatically switch over to the Battery, if installed
and charged. When external power is restored, by plugging into an AC or DC outlet, the device will accept power from the external power source and recharge the Battery while operating the device if adequate AC or DC power is available.
WARNING: DO NOT TOUCH THE POWER CONNECTOR ON THE BOTTOM OF THE UNIT WITH THE BATTERY REMOVED
AND WHEN THE DEVICE IS CONNECTED TO AN EXTERNAL AC OR DC POWER SOURCE.
AC POWER ADAPTERThe SAROS includes a universal AC Power Adapter for use wherever standard AC power is available. To connect to an AC powersource, be sure the AC Power Adapter device cord is securely inserted into the recessed power receptacle on the top of the device
and that the AC power cord from the AC Power Adapter is plugged into a grounded AC outlet. When the device is plugged inproperly, the External Power is Present Indicator will appear on the user control panel in Normal Mode.
CAUTION: The AC power cords used with the SAROS must meet the electrical requirements of the country where thedevice is used.
CAUTION: Use only with a grounded, 3-pin receptacle. Do not remove the grounding pin from the power cord.
CAUTION: Use only with CAIRE Inc. supplied power cords.

DC POWER SUPPLY
A 24 VDC Cable allows the system to operate from DC outlets, such as those found in vehicles. Start the vehicle. Insert the 24
VDC cable into the power receptacle on the top of the device. Next, insert the 24 VDC Cable plug into the DC power outlet inyour vehicle. When the device is properly connected and receiving power from the DC power source, a green indicator light on
the External Power is Present Indicator, on the control panel will illuminate in Normal Mode.
WARNING: SECURE THE SAROS AND THE DC POWER SUPPLY IN YOUR VEHICLE AND BE SURE THERE IS ADEQUATEAIR FLOW TO THE DEVICE AND THAT THE AIR INLET AND EXHAUST VENTS ARE NOT BLOCKED. BLOCKING OF THE
AIR INLET OR EXHAUST VENT MAY IMPAIR DEVICE PERFORMANCE.
WARNING: DO NOT LEAVE THE SAROS OR 24 VDC CABLE PLUGGED INTO THE VEHICLE WITHOUT THE ENGINE RUNNING OR ATTEMPT TO START THE VEHICLE WHILE THE DC CABLE IS CONNECTED TO THE VEHICLE. DOING SO WILLDRAIN THE VEHICLE’S BATTERY.

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WARNING: IF THE VEHICLE’S DC POWER SOURCE DROPS BELOW 20.0 VOLTS (BROWNOUT CONDITION) THE SAROSWILL REVERT TO BATTERY OPERATION IF THE BATTERY IS PRESENT.
TYPICAL NEW BATTERY OPERATING TIME
Battery Operating Time: The remaining operating time of the Battery is displayed on the user control panel when in Battery mode.
A variety of factors, such as flow setting, Pulse or Continuous Flow Mode, temperature or age will impact the operating time. The
following table provides operating time estimates for the SAROS operating on a fully charged Battery given certain flow settingsand nominal operating conditions.
CONTINUOUS FLOWSETTING (LPM)

CONTINUOUS FLOWBATTERY OPERATING TIME

PULSE FLOW BATTERYOPERATING TIME

PULSE FLOW MODE SETTING
(ML)

1.0

1.1 hours

1.2 hours

16

2.0

45 min1.1 hours

32

3.0

30 min53 min48

47 min64

46 min80

37 min96

Table 5-1. Typical New Battery Operating Time

NOTE: Battery run time will degrade under high temperature use and as the battery cells age.
CAUTION: Store the battery in a cool and dry location. This will help to assure the longevity of the battery.
CAUTION: U.S. Department of Transportation (DOT) and United Nations (U.N.) regulations require the removal of thebattery from the device for all international airline travel when the SAROS is checked as luggage. When shipping the
SAROS, the battery must also be removed from the device and packaged properly.
CAUTION: Only replace the CAIRE Inc. battery supplied with the device with a CAIRE Inc. battery.

WARNING: DO NOT ATTEMPT TO OPEN THE BATTERY; THERE ARE NO SERVICEABLE PARTS INSIDE THE BATTERY.

WARNING: DO NOT STORE THE SAROS WITH THE BATTERY INSTALLED IN THE UNIT. RETURN THE BATTERY TO AN
AUTHORIZED SERVICE CENTER OR CAIRE INC. FOR PROPER DISPOSAL.
WARNING: DO NOT DISASSEMBLE, INCINERATE, OR HEAT THE BATTERY ABOVE 140° F (60° C). THE BATTERY, USEDIN THIS DEVICE, MAY PRESENT A RISK OF FIRE OR CHEMICAL BURN IF MISTREATED.
				TYPICAL BATTERY RECHARGE TIME
The typical time to recharge your Battery, in order to achieve 80% capacity, from a fully discharged Battery is 1.5 hours, while
operating at 3 LPM continuous flow.
If the Battery becomes too warm during discharging, recharging will not begin until the Battery sufficiently cools. Removing theBattery and allowing it to cool may expedite this cooling process.
INITIAL BATTERY CHARGINGThe new Battery supplied with the SAROS is not fully charged when it is shipped from the factory. Pushing the Test Button on theBattery will indicate the level of charge within. Before using the SAROS for the first time, fully charge the Battery.
Attach the Battery by aligning the connector on the battery to the mating part on the bottom of the SAROS. The Battery will click
into place. Depress latching pin button prior to connecting battery.
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Power the SAROS ON, with the AC Power Adapter plugged in, and the Battery correctly installed. With the device powered ON,
allow the Battery to completely charge. The Battery is fully charged when the Battery Status Gauge Indicator on the Control Panelis completely illuminated or the device has been charging for a minimum of 5 hours.
CAUTION: Do not leave the SAROS, or battery, in the seating area of a motor vehicle or in the trunk of a motor
during a hot day.

vehicleNOTE: The SAROS can be used when either discharging or recharging of the Battery is taking place.
NOTE: The storage temperature range for the device is -4° F (-20° C) to +140° F (+60° C) and 95% non-condensing humidity.
In the event of an external power interruption, the SAROS will automatically switch to the Battery operation. When external
power is restored, the Battery will automatically start recharging. If the Battery is not present, or fully discharged, during an external power interruption, the SAROS will shut down.
LOW BATTERY ALERTS
The table below describes the LCD Display and Alarm for Low Battery Conditions.		
MINIMUM REMAINING TIME ON BATTERY< 6 Minutes

7 Minutes < X < 15 Minutes> 15 Minutes

Time Remaining (Min)

Flash

Flash

Solid

Battery Icon

Flash

Solid

Solid

Alarm

ON

OFF

OFF

Table 5-2. Minimum Remaining Time on Battery

NOTE: Momentarily press the Utility Button to silence the Loss of Power alarm for 2 minutes. Connecting the SAROS to an external AC
power supply will also eliminate this alarm.
When replacing the Battery without the device being externally powered, push the ON/OFF (Standby) to restart the SAROS.
BATTERY INSTALLATION ONTO SAROS
1. Remove connector and pin caps.
2. Press the Latching Pin Release Button inward on the bottom of the Battery prior to installing onto the SAROS.
NOTE: It is important to depress the latching pin release button prior to installation.
3. Insert the Battery onto the SAROS by aligning the Battery Connector of the Battery into the connector opening at the bottom of
the unit. Battery is properly engaged when the latch pin is snapped into place.
Battery
Connector

Latching Pin
Release
ButtonBattery Connector of
SAROS
Figure 5-1. Battery Installation

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5.1 OPERATING THE SAROS FOR THE FIRST TIME
Step 1: Locating the SAROS.
Place the SAROS in a well-ventilated area. Be sure the air inlet and exhaust vent are not obstructed.
Position the SAROS so all audible and visual indicators or alarms can be easily seen and heard.
Connect the AC Power Adapter to External Power Receptacle located on top of the device and plug the device into a grounded
AC Power outlet, connect to a DC Power source with the 24 VDC Cable, or be sure there is a fully charged Battery installed.
Step 2: Power ON the Device and allow it to Warm Up
Oxygen Monitoring – The SAROS has an oxygen concentration status indicator (OCSI) built-in to the device. The OCSI continually monitors the oxygen output of the device.
Press and hold the “ON/OFF” Button to power ON your SAROS. The SAROS will start up in Normal Mode and Continuous
Flow of 3 LPM. Allow five (5) minutes minimum for the device to reach its performance specifications. The five (5) minute warm
up time is a stabilization period during which no alerts or codes are to be expected. If the device fails to reach its performance
specifications after five (5) minutes, the unit will alarm according to the mode it is in.
Step 3: Connect the oxygen supply tubing to the SAROS
Clean and Replace the cannula and oxygen supply tubing regularly, as recommended by the cannula manufacturer’s instructions.
Step 4: Select the flow delivery mode
Press the Flow Mode button to select the desired flow mode – Continuous or Pulse. Pressing this button repeatedly will toggle
you back and forth between the flow modes.
When operating in the Continuous Flow Mode, a continuous supply of oxygen measured in liters per minute (LPM) will flowfrom the Oxygen Outlet Port.
NOTE: When any Control Panel settings are changed, the SAROS re-enters a 5 minute stabilization mode during which no alarms are to be
expected.
WARNING: DO NOT USE SUPPLY TUBING OR CANNULA EXTENSIONS THAT ARE MORE THAN 50’ (15.2M) IN LENGTH IN
THE CONTINUOUS FLOW MODE. IN PULSE MODE, USE ONLY THE CANNULA WITHOUT EXTENSIONS.
PULSE FLOW MODE OPERATION:
When operating in Pulse Flow Mode and there is no inspiratory effort detected by the device after 60 seconds total time, the device will switch to the Continuous Flow Mode and will produce at an equivalent minute volume. The alert will cease at this time.
When operating in Pulse Flow Mode, a bolus of oxygen measured in mL will be delivered from the Oxygen Outlet Port, eachtime an inspiratory effort, or negative pressure, is detected.
PULSE FLOW MODE FEATURES:
The SAROS Pulse Flow Mode delivers a high flow oxygen bolus at the beginning of each inspiration. Your SAROS Pulse Flow
Mode has a feature, called autoSAT Technology and a Pulse Flow Mode Sensitivity Setting to easily trigger the oxygen bolusdelivery.
These features are provided to ensure that patients can easily trigger a delivery of an oxygen bolus and that the oxygen bolus
maintains consistency over higher breath rates.

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autoSAT Technology provides a consistent bolus volume of oxygen as a patients’ breath rate increases or decreases.
Pulse Setting
Bolus Size (+/- 15%)

Maximum Breath Per Minute
(bpm)

16

40

32

40

48

40

64

40

80

37

96

31
Table 5-3. Pulse Settings

NOTE: Bolus volume decreases as breath rate exceeds published range.
The Pulse Flow Sensitivity (P SENS) can be adjusted in the Utility Menu from 1–3. A setting of 1 is the most sensitive and a setting of 3 is the least.
WARNING: PULSE FLOW MODE SETTINGS MUST BE DETERMINED FOR EACH PATIENT INDIVIDUALLY. SETTINGSUSED IN THE CONTINUOUS FLOW MODE MAY NOT APPLY, OR BE APPROPRIATE, IN THE PULSE FLOW MODE AND
VICE VERSA.
WARNING: AS WITH ALL OXYGEN-CONSERVING TYPE DEVICES, THE SAROS MAY NOT BE ABLE TO DETECT ALL
INSPIRATORY EFFORTS IN THE PULSE FLOW MODE.
Step 5: ADJUST THE FLOW SETTING TO THE PRESCRIBED LEVEL
Using the Flow Setting Buttons, adjust the flow setting to the prescribed setting.
NOTE: When any Control Panel settings are changed, the SAROS re-enters a 5 minute stabilization mode during which no alarms are to be
expected.
Step 6: SELECT USER DEFINABLE SETTINGS USING THE UTILITY MENUThe Utility Menu has the features that can be adjusted by the user or information for the user or Service Technician. Below are thefeatures of the Utility Button and the Utility Menu:• Pressing the Utility button will turn off the audio alarm for 119 seconds unless this is prevented by a malfunction.
• The Utility Menu mode can be entered whenever the unit has power (Standby or ON) or 9V Battery.
• Each time the Utility Button is pressed, the Utility menu will advance to the next option.
• The options within the Utility Menu can be changed by using the Increase and Decrease buttons.
• Pressing the Flow Mode button in the Utility Menu goes back to the previous Utility menu item.
• The Utility Menu will revert back to the previous display mode after 5 seconds.

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NOTE: Pressing and holding the Utility button for at least 10 seconds will reset the SAROS. To restart, press and hold ON/OFF (Standby)
button.
The following sequence of screens shall be displayed on the LCD when the Utility Menu is displayed.
Format: AC=XXXX
Alarm Codes

See Alarm Code Table definitions. When more than one alarm code is present, pressing the Increase key willshow the next highest priority code and pressing the Decrease key will show the next lowest priority code.

Pulse Sensitivity

Format: P SENS = X (where X is the value of 1 thru 3)

LCD Contrast

Format: LCD CT = X (where X is the value from 1 thru 6)

Normal Mode
Brightness

Format N BRT = X (where X is 1 thru 6)

Tactical Mode
Brightness

Format T BRT= X (where X is 0 thru 6)

Tactical Buzzer Volume

Format: T VOL=X (where X is the value from 0 thru 6)

Tactical Mode On / Off
selection

Format: TACT=ON

9V Battery Status

Selects the LED and LCD backlight Light intensity used in Normal Mode.

Selects the LED and LCD backlight Light intensity used in Tactical Mode.

Format: TACT=OFF
Format: 9V = GOOD
Format: 9V = RPLC

Hours of Operation

Format: HR= XXXXX

System Software Part
Number and Revision

Format: SPPPP Mm(where SPPPP = System Software Part Number, M = Major Version, and m = minor Version)

Motor Software Part
Number and Revision

Format: MPPPP Mm(where MPPPP = Motor Software Part Number, M = Major Version, and m = minor Version)
Table 5-4. Utility Menu Screens

Step 7: Begin using the SAROSNOTE: You will achieve longer operating time on the Battery if you operate in the Pulse Flow Mode.
Step 8: Power off the Device
Press and hold the “ON/OFF” Standby Button for two (2) seconds to power OFF the SAROS.

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6.0 OPERATOR MAINTENANCE & SERVICE
6.1 CLEANING THE SAROS
Use mild detergent solution to clean the sleeve, control panel and power supplies. Turn OFF the SAROS and disconnect from AC
or DC power before any cleaning or disinfection activity. DO NOT spray the sleeve, control panel or power supplies. Use a damp
(not soaking wet) cloth or sponge. Spray the cloth or sponge with mild detergent solution to clean the sleeve, control panel or
power supplies. To disinfect the SAROS, use only Lysol Brand II disinfectant (or equivalent). Proceed as directed by the manufacturer.
Cleaning the SAROS Battery
The Battery in the SAROS requires special care to assure a longer life and the highest level of performance. The CAIRE Inc. Battery is the only approved Battery recommended for use with the SAROS.
Use a damp (not soaking wet) cloth or sponge. First spray the cloth or sponge with a mild detergent and then clean the Battery
case and the latch.
Cannula Replacement
Replace your supply tubing and cannula on a regular basis as recommended by the cannula manufacturer’s instructions.
6.2 ROUTINE MAINTENANCE
Maintenance StepFrequency

Clean Air Inlet Filter

weekly (If in use, not required if in storage.)

Run device and fully drain SAROS battery

3 months*

Air Inlet Filter Replacement

6 months, or as needed

HEPA Filter

6 months, or as needed

Performance Verification Check

6 months, or when a problem is suspected

Replace 9-volt battery

as needed
Table 6-1. Routine Maintenance*Three month recommendation is based on a climate-controlled storage environment. For other storage conditions, contact CAIRE Technical Support at
1-800-482-2473.

Tools Required
The following section lists procedures that are necessary to maintain the SAROS. Service should only be performed by a qualified
technician. To perform periodic maintenance, the only tools that should be necessary are:• #1 Phillips Screwdriver• 3/8” open end wrench• Oxygen Analyzer that includes the capability to measure both flow rate (LPM and mL) and Oxygen concentration/purity %.
• Tubing to connect the SAROS to the Oxygen Analyzer for testing.

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Air Inlet Filter(9798-SEQ)

Inlet CoverScrews x4(9291-SEQ)

9V Battery(9257-SEQ)

Inlet Cover(9758-SEQ)

OxygenOutlet Port
(9764-SEQ)
HEPA
Filter(4770-SEQ)

Simplified User
Instructions
Label (behind)

Battery

Figure 6-1. SAROS Components

6.3 CLEANING OR REPLACING AIR INLET FILTER
6.3.1 Removing the air inlet cover.
6.3.2 Disconnect power supplies and remove the battery if connected.
6.3.3 Using a Phillips #1 screwdriver, loosen the four captive screws.
6.3.4 Remove cover.

Figure 6-2. Remove Cover

6.3.5 REMOVING AND CLEANING/REPLACING THE AIR INLET FILTER
6.3.6 Gently remove the filter shown in figure 6-3.
6.3.7 If the filter is damaged, replace.
6.3.8 For cleaning, gently wash with warm soapy water. Allow filter to completely dry before re-installing.
6.3.9 Re-install Air Inlet Filter.
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Operator & Service Manual
6.3.10 Using a Phillips #1 screwdriver, re-attach the Cover with screws.
6.3.11 Initial and date the Service and Maintenance Record.

Figure 6-3. Filter

CAUTION: Operating the SAROS with a clogged air inlet filter may reduce performance and lead to system damage orpremature failure.

6.4 REPLACING THE HEPA FILTER
6.4.1 Disconnect all power supplies including external Battery if connected.
6.4.2 Using a 3/8” open end wrench, remove the O2 Fitting/HEPA Filter shown in figures 6-4.
6.4.3 Unscrew the HEPA Filter from the O2 Fitting as shown in figure 6-4.
6.4.4 Replace with new HEPA Filter. Do not over tighten.
NOTE: Ensure that the O-Rings shown in figure 6-4 are positioned correctly before re-installation.
6.4.5 Re-install the O2 Fitting/HEPA Filter. Do not over tighten.
6.4.6 Initial and date the Service and Maintenance Record.

HEPA filter

o-rings
Figure 6-4. Reinstall O2 Fitting/HEPA Filter

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6.5 RUN DEVICE AND FULLY DRAIN SAROS BATTERY
Operate the device once every 3 months by running the device on battery power until drained. This is required if the device is instorage and unused. If the device is not run regularly per this recommendation there is a risk it will not perform to specification
when removed from storage.
1) Turn on the SAROS and run at any continuous flow setting until the battery is completely drained and the SAROS powers off.
2) Once the SAROS powers off, immediately connect to AC external power to begin re-charging the battery. You may either continue to run
the SAROS or leave it powered off during re-charge.
3) Once the battery is fully charged, disconnect the battery, power off the unit if still running, and return the SAROS to proper storage conditions.
6.6 SAROS PERFORMANCE VERIFICATION TESTNOTE: The entire verification procedure is recommended to be completed after repairs to verify overall functionality of the unit.
Verify functionality of the SAROS using the following procedures. The performance verification test shall be performed upon
initial receipt of the SAROS, any time a problem is suspected, and at regular 6 month intervals. It may be performed at more frequent intervals if required by the equipment provider. It is suggested that these steps be performed in the order listed for efficiency
and accuracy.
6.6.1 General Operation Test
1) Install the SAROS battery.
2) Use an external (AC or DC) power cord to connect the SAROS to external power. Verify the power cord connects securely to the receptacle on the SAROS.
NOTE: The battery is not fully charged upon initial receipt of the SAROS. If testing a new unit, this will begin the battery charging
process. Reference steps 7-8 to verify proper battery charging.
3) Press and hold the “ON/OFF” button for 3 seconds to power on the SAROS.
NOTE: Before powering on, ensure the SAROS is in the well-ventilated area and that the air inlet andexhaust vent are not obstructed.
4) Verify the audible alarm sounds upon start-up and the screen defaults to display a flow setting of C3.
5) Allow the unit to run for a minimum of 5 minutes to reach its performance specifications. After the warm-up
period, verify that only the green light remains illuminated and there are no audible alarms.

6) Press the utility button once and verify that there are no active alarms. The display screen will read “AC =NONE” if no alarms are active.
7) Verify that the battery icon is visible on the right side of the screen.

8) Verify that the battery is charging. The battery icon bars will move in a waterfall fashion while charging. If
the battery icon is not moving, verify if the battery is already fully charged. A fully charged battery will have acompletely dark icon with all bars filled.
Half Charged Fully Charged

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9) Verify the functionality of the increase and decrease flow buttons. Starting at flow setting C3, press thedecrease flow button and verify the screen reads C2. Press the increase flow button and verify the screenchanges back to C3.
NOTE: It is normal for the motor to speed up or slow down with each flow adjustment.

Decrease flow button

Increase flow button
10) Verify the functionality of the pulse dose mode button. Press the button and verify the device toggles
between a continuous flow setting (C) and pulse dose setting (P). The C & P are displayed on the far left side of
the screen.
11) Verify the functionality of the no breath alarm. Switch to a pulse dose setting and do not attach any tubing to the outlet. Within 60 seconds of no breath detected, verify the system automatically changes to continuous flow. This is a patient safety measure.
12) Verify the unit runs on battery power. Disconnect the AC power supply and allow the SAROS to run for approximately 60 seconds. Verify
the unit continues to run without interruption and that the battery icon is still displayed on the screen.
13) Verify the no battery alarm. Remove the battery and verify that an audible alarm sounds and the red light is visible.
14) Within 5-10 seconds, reinstall the battery and verify the SAROS restarts automatically. Once the SAROS restarts, re-connect the external power as well to resume battery charging.

6.6.2 Flow and O2 Concentration Test
Connect the SAROS to a testing station per the diagram shown below:

SAROS

Testing device that includes aflow meter & O2 Monitor.
Example – (VT PLUS HF Gas Flow
Analyzer manufactured by FLUKE
Biomedical)

Vent toatmosphere

NOTE: If testing concentration or flow rate at multiple settings, allow a 5 minute stabilization period between changing the flow rate prior to
taking any test readings.
NOTE: The SAROS is BTP compensated. If measuring concentration and/or flow with a device that is non-Argon compensated and nonBTP compensated, an additional 0.10 LPM should be added to the flow rate recorded by the testing equipment. The VT PLUS HF Gas Flow
Analyzer manufactured by FLUKE Biomedical is not Argon compensated. FLUKE is BTP compensated but feature has to be enabled.
NOTE: Be sure to used standard oxygen-compatible tubing. The tubing from SAROS to the testing device should be a single continuous
piece with no restrictions in line.
1) Verify continuous flow settings C3 and C2 using the following procedure:a) Turn on the SAROS and set the flow to C3 (3.0 LPM). Allow the unit to run for a minimum of 5 minutes to stabilize before
testing.
b) Verify the O2 concentration is within 90-96% and record the reading.
c) Record a 60 second running average for the flow rate. Verify the 60 second average is within 2.70 - 3.30 LPM. If using a
non-Argon or Non-BTP compensated measuring device, verify the 60 second average is within 2.60 – 3.20 LPM.
d) Adjust the flow setting to C2 (2.0 LPM). Allow the unit to run for a minimum of 5 minutes to stabilize before testing.
e) Verify the O2 concentration is within 90-96% and record the reading.

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Operator & Service Manualf) Record a 60 second running average for the flow rate. Verify the 60 second average is within 1.80 - 2.20 LPM. If using a
non-Argon or Non-BTP compensated measuring device, verify the 60 second average is within 1.70 - 2.10 LPM.
NOTE: It is not required to test flow and concentration at 1LPM for performance verification. This is not a typical clinical use case.
2) Verify functionality of the device in pulse dose mode using the following procedure:a) Adjust the SAROS to a setting of P48 (48mL).
b) Trigger a simulated breath by folding and pinching the tubing* running from the SAROS to the testing device. Verify thebreath is triggered by the light blinking adjacent to the pulse flow mode button.

*Other acceptable procedures to trigger a breath may include connecting a tee to a breath simulator (syringe, jet venturi, nasal cannula, etc.). If you are using
a tee, the tubing to the breath simulation device should not exceed 2 inches in length.

c) Note and record the bolus size in mL of each breath. Repeat 5 times. Average the five bolus measurements and record theaverage reading. You may need to “ZERO” the testing device between triggering a simulated breath.
d) Adjust the SAROS to a setting of P96 (96mL).
e) Repeat steps B & C for the P96 testing.
6.6.3 Battery Run Time Test
1) Test battery run time using the following procedure:a) Fully charge the battery via AC power by leaving it connected to AC power for a minimum of 1 hour. After 1 hour, verify thepower cartridge status indicator is fully illuminated and no longer displays a waterfall motion.
b) Disconnect the AC power. Power the SAROS on at C3 (3.0 LPM) and start a timer.
c) Allow the unit to continue to run until it shuts off.
d) Once the unit shuts off completely, stop the timer and record the battery duration.
e) Verify that the time recorded is >24 minutes
NOTE: The nominal capacity of a new battery is 30 minutes at setting C3. A battery is considered within its useful life if its duration is 80%of the nominal capacity of a new battery (24 minutes at C3).

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6.7 REPLACING THE 9V BATTERY
6.7.1 Disconnect power supplies and remove external battery if connected.
6.7.2 Using a Phillips #1 screwdriver, loosen the four captive screws shown in figure 6-2.
6.7.3 Remove cover.
6.7.4 Remove 9V battery from where shown in figure 6-5.
6.7.5 Disconnect and replace battery as shown in figure 6-5.
6.7.6 Using a Phillips #1 screwdriver, replace the Air Inlet Cover.
6.7.7 Initial and date the Service and Maintenance Record.

Figure 6-5. Replacing 9V battery

7.0 ALERTS, ALARMS, AND TROUBLESHOOTING TABLE

The tables show the possible audible and visual alerts and alarms, their conditions and suggest appropriate troubleshooting responses. If you are unsure about any alerts or alarm conditions, or responses please contact an authorized service technician or go
to www.CAIREmedical.com.
Alarm levels
Type

Level

Green LED

Yellow LED

Red LED

Audio Alarm

LCD

Description(may shutdown
electronics after 10
seconds)

Flashing star
replaces T or N

Malfunction

ON
High Alarm

0

OFF

OFF

ON

Med Alarm

1

OFF

Blink

OFF

2 beeps every 119
sec

Flashing star
replaces T or N

Attention isrequired

Low Alarm

2

OFF

Blink

OFF

1 beep every 119s

Flashing star
replaces T or N

Attention isrequired

Status

3

ON

OFF

OFF

OFF

NC

All OK

NC= No Change
Table 7-1. Alarm Levels

WARNING: AVAILABILITY OF A BACK-UP SOURCE OF OXYGEN IS RECOMMENDED IN CASE OF POWER OUTAGE OR A
DEVICE FAILURE. CONSULT YOUR PROVIDER FOR BACK-UP OXYGEN SYSTEM.
WARNING: DO NOT Ignore Alarms. System will attempt to produce oxygen under fault condition but may not be at purity
or flow.

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7.1 SYSTEM TROUBLESHOOTING GUIDESYMPTOM
SAROS does not power onwhen ON/OFF button is pressed(constant tone)

No Oxygen

Low Oxygen Concentration

Low Oxygen FlowNo Oxygen delivered in
Pulse Flow Mode
Battery Status Gauge never indicatesfully charged
Heat related failures, i.e.
Compressor too hot

PROBABLE CAUSEREMEDYNo Battery installed

Install Battery or plug into external power

Battery is discharged or no external power
is present

Plug into external power

Other

Contact an authorized Service Technician

Air Inlet or HEPA Filter Blocked

Clean Air Inlet Filter or replace HEPA Filter

SAROS not ON

Power SAROS ON

Tubing or cannula is not properly connected or is kinked

Check tubing, cannula and connections

Other

Contact an authorized Service Technician

Restriction in tubing

Repair or replace tubing.

Air Inlet or HEPA Filter restricted

Clean air inlet filter or replace HEPA Filter. Place
your SAROS so there is adequate air flow.

Inadequate Ventilation

Place your SAROS so that there is adequate air
flow, i.e. not covered by a blanket or a poncho.

Hot environment

Allow SAROS to cool

Other

Contact an authorized Service Technician

Restriction tubing

Repair or replace tubing.

Air Inlet or HEPA Filter Blocked

Clean Air Inlet Filter or replace HEPA Filter

Other

Contact an authorized Service Technician

Tubing/cannula longer than 7 feet (2.1m)

Attach 7 foot (2.1m) tubing/cannula

No inspiration detected

Contact an authorized Service Technician

Battery is aging

Contact an authorized Service Technician toreplace Battery

Ambient condition is too hot

Place unit in cool environment or out of direct
sunlight, if possible.

Battery will not latch onto SAROS

Battery Latching Pin Release is stuck in the Press the Latching Pin Release Button inward towrong position
free the latch mechanism and re-install Battery

Oxygen production is limited due topower limitations

External power source cannot supply
enough power

Check air inlet filter and check the external powersourceTable 7-2. System Troubleshooting Guide

9735-SEQ M | 39

Operator & Service Manual

8.0 REPROGRAMMING/CALIBRATIONAll reprogramming of the circuit boards shall be performed by CAIRE, Inc or by a factory authorized service center.
Flow calibration is required whenever replacing an ATF, control board, compressor, or proportional valve. Flow calibration can bedone at a CAIRE authorized service center or in the field using item T-10560. See manual MN053 for details on performing flow
calibration and firmware updates in the field using item T-10560.

9.0 SHIPPING AND TRANSPORTING THE SAROS
When shipping the SAROS use original packaging if possible. Always remove the Battery from the SAROS before shipping.
If original packaging material is available repack the SAROS, Battery and power supplies in the designated packaging area.
If original packaging material or other CAIRE Inc. authorized shipping container is not available, contact CAIRE Inc. for replacement shipping container.

10.0 STORING AND DISCARDING THE SAROSWARNING: Do not expose the SAROS to water. The SAROS enclosure does not provide protection against the harmful
effects of liquid ingress. Electrical shock or damage to the unit may result.
STORING THE SAROS
Heat and humidity may degrade the performance or severely damage the SAROS. Store the device in a cool, dry protected area
away from high temperatures, moisture and humidity. Remove the Battery when storing the device.
Storage Environment• Temperature-4º F to 140º F (-20° to 60°C)• Humidity

Up to 95% Non-condensing
Table 10-1. Storage Environment

Ensure that all recommended maintenance procedures in section 6.0 are performed while the device is in storage. It is especially
important that the 3-month requirement to run the device and fully drain the SAROS battery be performed while the unit is instorage to ensure proper operation.
Discarding the SAROS
Battery Disposal: Your Battery is rechargeable and can be recycled. Always return it to an authorized service center or CAIRE
Inc. for proper disposal. You can also contact your local city or town offices for instructions on proper disposal of
the Battery.
SAROS: Local environmental laws may prohibit disposal of electrical and/or electronic equipment such as the SAROS and ACPower Adapter. Contact the local city, town or country offices for instructions on proper disposal of electrical or electronic equipment. Alternately, CAIRE Inc. may be contacted for disposal information at 1-800-482-2473.

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11.0 OVERHAUL & REPAIR
11.1 TOOLS AND TEST EQUIPMENT• #1 Phillips Screwdriver• #1 Flathead Screwdriver• Needle nose pliers• Wire cutting pliers• 3/8” open end wrench• Oxygen analyzer that includes the capability to measure both flow rate (LPM and mL) and Oxygen concentration/purity %.
• Tubing to connect the SAROS to the Oxygen analyzer for testing.
• ESD mat or approved ESD system.
11.2 MAINTENANCE AND SERVICE PARTS
Maintenance Parts
Description

Part Number

9V Battery

9257-SEQ

Air Inlet Filter

9798-SEQHEPA Filter

4770-SEQHEPA Filter O-Ring (Large)

9251-SEQHEPA Filter O-Ring (Small)

9250-SEQ

Accessories
Description

Part Number

AC Power Supply

9726-SEQ

24VDC Cable

9727-SEQ

Battery Pack (packaged 9723-SEQ)

20952897

Nasal Cannula

5408-SEQ

Repair & Overhaul Parts
Description

Part Number

9V Battery Foam

9256-SEQ

Air Inlet Cover

9758-SEQ

ATF Bulkhead

9922-SEQATF Exhaust Filter

9221-SEQATF Exhaust Tubing

9227-SEQ

ATF Module Assembly

SP9729-SEQ

ATF Muffer To Rain Guard Tubing

9390-SEQ

ATF Muffler Assembly

SP9314-SEQ

ATF To Product Tank Outlet Tubing

9797-SEQATF To Product Tank Pipe9342-SEQATF To Product Tank Pre-Cut Inlet
Tube

SP6981-SEQ

Battery Interface Plate

SP9939-SEQ

Battery Interface Plate Screws (3)9914-6-SEQ

Cable Ties

6968-SEQ

Compressor Assembly

SP9238-SEQ

Compressor & Product Tank
Assembly

SP9240-SEQ

Compressor Fan

9767-SEQ

Compressor Fan Screws (4)9913-10-SEQ

External Power Connector

9766-SEQ

External Power Connector Screws(4)9203-2-SEQ

Hose Clamp

9369-SEQ

Inlet Cap Assembly

SP9756-SEQ

Inlet Cap Mounting Screws (3)9941-6-SEQ

Inlet Cover Screws (4)9291-SEQ

Kapton Tape (1/2 in Diameter)

2696-SEQ

Left Strut

9779-SEQ

Loctite Adhesive1405-SEQ

Membrane Panel

9731-SEQO2 Oulet Port

9764-SEQ

O-Ring For External Power
Connector

9916-3-SEQ

Oxygen Outlet Tubing

6981-SEQPCB Circuit Board Assembly

SP9710-SEQ

Proportional Valve5293-SEQ

Proportional Valve Block

9231-SEQ

Proportional Valve Screws (2)9203-7-SEQ

Rain Guard

9292-SEQ

Rain Guard O-Rings (Large)

9928-SEQ

Rain Guard O-Rings (Small)

9374-SEQ

Rain Guard Screws (2)9960-4-SEQ

Right Strut

9780-SEQSAROS Sleeve

9280-SEQ

Strut Screws (13)9912-1-SEQ

Top Strut

9778-SEQ
Table 11-1. Maintenance and Service Parts

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11.3 REPROGRAMMING AFTER OVERHAUL AND REPAIR PROCEDURES
A flow calibration procedure is required after replacing any of the following components or assemblies: ATF Module, Compressor and Product Tank, PCB Circuit Board, Proportional Valve. If any of these components are replaced, flow calibrationis required. Flow calibration can be done at a CAIRE authorized service center or in the field using item T-10560. See manual
MN053 for details on performing flow calibration and firmware updates in the field using item T-10560. Equipment or proceduresto perform a flow calibration are not contained in this manual.
NOTE: Further damage to the SAROS or other components is possible if the flow calibration is not performed.
11.4 SAROS MAIN COMPONENTS

Inlet Cap AssemblyPart # SP9756-SEQ

PCB AssemblyPart #SP9710-SEQ

Compressor Assembly onlyPart #SP9238-SEQ

ATF
Assembly
Part # SP9729-SEQ

PCB Wire Harness AssemblyPart # 9201-SEQ

Figure 11-1. Inside SAROS

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11.5 ALARM INDICATIONS AND CODES
Description
All OK

Initialization

Audio
Indicator
OFF

OFF

Ext. Power
LED
NC

NC

Battery
Icon
NC

NC

Alarm CodeDescription

None

This indication shall exist when no alarms aredetected.

None

Purity alarms shall be inhibited during the initialization period. The SAROS will also enter thestabilization period where no alarms are active if acontrol panel setting is changed.

400

The alarm shall activate only when concentration
has been less than 70% for more than 60 seconds.
It shall clear immediately if the concentration goes
above 70%.The unit shall continue production.

410

The alarm shall activate only when concentration
has been less than 50% for at least 120 seconds
after the warm up period has expired. The unit
shall restart production.

800

The alarm shall activate only when concentration
has been less than 85% for more than 60 seconds.
It shall clear immediately if the concentration goes
above 85%.

FLOW
%O2 < 70%

ON

NC

%O2 < 50%ON

70%< O2 <85%

2 beeps of
0.5s every
119sFlow Rate Error

2 beeps of
0.5s every
119s

NC

NC

2000

The alarm shall activate when the difference
between the desired flow rate and the measured
flow rate exceeds 10% for a minimum duration of
60 seconds.

Breath Pressure
Sensor Failure

2 beeps of
0.5s every
119s

NC

NC

A210

The alarm shall activate when a breath pressure
sensor failure.

Ultrasonic Sensor
Failure

ON

NC

NC

A300

O2 production shall stop or cannot be started.

Unable to Achieveor Maintain ProductTank Pressure

ON

NC

NC

A500

O2 production shall stop.

Purity Calibration
Data Failure

ON

NC

NC

A600

The unit shall produce using default data.

Flow Calibration DataON
Failure

NC

NC

A700

The unit shall produce using default data.

Ambient Pressure
Sensor Failure

ON

NC

NC

AB00

O2 production shall continue.

Ambient TemperatureON
Sensor Failure

NC

NC

AB10

O2 production shall continue.

NC = No Change

NC

NC

NC

NC

NC

Table 11-2. Alarm Indications and Codes

9735-SEQ M | 43

Operator & Service Manual
Description

Audio
Indicator

Ext. Power
LED

Battery
Icon

Alarm
Code

Description

Power
Loss of Power

ON

NC

NC

4000

This alarm shall activate during production when thesystem determines that valid power has been lost. O2
Production and battery charging shall stop, and theelectronics shall shut down after 10 seconds.

Missing Power

ON

NC

NC

4010

This alarm shall activate if the user attempts to start theunit while there is no usable power source connected.
O2 Production and battery charging shall not begin andthe electronics shall shut down after 10 seconds.

Low Battery

2 beeps every
119s

NC

(Blink)9540

The alarm shall activate when the time remaining on
battery is ≤ 6 minutes. The alarm shall cease when thetime remaining is ≥ 12 minutes.

Cannot Charge Battery

2 beeps every
119s

NC

(Blink)952CThis alarm shall activate if system is attempting tocharge the battery, but can’t do so.

External voltage too
high

ON

(Blink)NC

AC00This alarm shall activate when the external voltage isgreater than 30V. O2 Production and battery charging
shall not begin and the electronics shall shut down
after 10 seconds.

Low 9 volt battery

3 beeps after
POST

NC

NC

None

The 9 volt battery measured less than 6.5V.

Key Stuck On

2 beeps every
119s

NC

NC

8110

This alarm shall activate when a key is active forgreater than 7 seconds.

Compressor Stall

ON

NC

NC

9194

O2 production shall stop or cannot be started.

Compressor Driver
Fault

ON

NC

NC

9195

O2 production shall stop or cannot be started.

Pulse Mode Disabled

2 beeps every
119s

NC

NC

A200

This alarm shall activate when a breath sensor malfunction is detected. The system shall not enter pulse
mode.

Motor Controller Fails
Post

ON

NC

NC

FD00

O2 production shall not be started.

Physical / Functional

Table 11-2. Alarm Indications and Codes (continued)

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Operator & Service Manual
Audio
Indicator

Description

Ext. Power LED

Battery
Icon

Alarm CodeDescription

COMM

Invalid Reset

I/O Port Failure

ON

ON

NC

NC

NC

NC

8000

O2 production and battery charging shall notstart. The electronics shall shut down within 15
seconds when on battery power. The display
shall be blanked within 15 seconds when on
external power.

8100

O2 production and battery charging shall notstart. The electronics shall shut down within 15
seconds when on battery power. The display
shall be blanked within 15 seconds when on
external power.

RAM Failure

ON

NC

NC

8200

O2 Production and battery charging shallstop. The electronics shall shut down within 15
seconds when on battery power. The display
shall be blanked within 15 seconds when on
external power.

Run Log Storage
Failure2 beeps of 0.5s
every 119s

NC

NC

8300

Production shall continue. Battery charging if
required shall continue.

Program Memory
Failure

ON

NC

NC

8310

O2 Production and battery charging shall stop.
The electronics shall shut down within 15 seconds on when on battery power. The display
shall be blanked within 15 seconds when on
external power.

Event Log Storage
Failure2 beeps every
119s

NC

NC

8320

Production shall continue. Battery charging if
required shall continue.

EEPROM Data Write
Failure2 beeps every
119s

NC

NC

8400

Production shall continue. Battery charging if
required shall continue.

Watchdog
Time out
Battery Communication Error

IPC Failure

ON

NC

NC

9000

O2 production and battery charging shall stopor cannot be started. The electronics shallshut down within 15 seconds when on battery
power. The display shall be blanked within 15
seconds when on external power.

2 beeps every
119s(Blink)(Blink)9500

Battery shall not be charged or discharged.

A000

O2 production and battery charging shall stopor cannot be started. The electronics shall shut
down after 10 seconds when on battery power.
The display shall be blanked after 10 seconds
when on external power.

ON

NC

NC

Table 11-2. Alarm Indications and Codes (continued)

9735-SEQ M | 45

Operator & Service Manual
Description

Audio
Indicator

Ext. Power
LED

Battery
Icon

Alarm
Code

Description

Temp
ATF Temperature
Sensor Failure

ON

NC

NC

8900

O2 production shall continue.

Compressor Too
Hot

ON

NC

NC

9100

O2 production shall stop or cannot be started.

Compressor Temperature Sensor
Failure

ON

NC

NC

9110

O2 production shall continue.

Compressor and
ATF Temperature
Sensor Failure

ON

NC

NC

9110

O2 production shall stop or not be started depending on
Compressor Temperature Sensor and ATF Temperature
Sensor condition.

Power Board Too
Hot

ON

NC

NC

9200

O2 production and battery charging shall stop or cannot be
started. The electronics shall shut down after 10 seconds
when on battery power. The display shall be blanked after
10 seconds when on external power.

Power Board
Thermistor Failure

2 beepsevery 119s

NC

NC

9210

Production shall continue. Battery charging if required
shall continue.

Motor Driver Board
Too Hot

ON

NC

NC

9300

O2 production and battery charging shall stop or cannot be
started.

Motor Driver Board
Thermistor Failure

2 beepsevery 119s

NC

NC

9310

Production shall continue. Battery charging if required
shall continue.

Battery Too HotONNC(Blink)9510

Battery shall not be charged or discharged.

Battery Thermistor
failure2 beepsevery 119s

NC

(Blink)9550

The system shall not use the battery if the independent
battery thermistor determined to be open or shorted.

Battery Chip
Thermistor failure

2 beepsevery 119s

NC

(Blink)9560

The system shall not use the battery if the reported battery
chip thermistor is determined to be open or shorted.

Battery Too Cold
to UseOFFNC

No Waterfall

95C0

The battery shall not be charged or discharged.

Battery Too Cold to
OFFChargeNC

No Waterfall

95CC

The battery shall not be charged.

Product Temperature Sensor Failure

NC

NC

A410

O2 production shall continue.

A410

Product Temperature Sensor and Ambient Temperature
Sensor condition.

None

The battery shall not be charged.

A410

O2 production shall stop or not be started depending on
Product Temperature Sensor and Ambient Temperature

Battery Too Hot toChargeProduct and Ambient Temperature
Sensor Failure

ON

OFF
ON

NC
NC

No Waterfall
NC

AB10

Sensor condition.

Table 11-2. Alarm Indications and Codes (continued)

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11.6 COMPREHENSIVE TROUBLESHOOTING GUIDE
Indications

Code

During start up
or stabilization period
when a control panel(flow) setting has beenchanged:Possible Cause

Remedy5 minutes before alert conditions willsound or code

Alert condition will be silent until the warm up period or
stabilization period is over, 5 minutes.

1

At start up, All 3 lightare on (green, yellow,& red)

0400

Device warming up - >70% O2

Normal condition

2

At start up, 2 lights are 0800
on (green & yellow)

Device warming up - >85% O2

Normal condition

3

At start up, 1 lightremains (green)

Device warmed up, Within spec 93+/-3% O2

Ready to use

Front panel setting change—alerts will
be reset for 5 minute stabilization.

Follow numerically until resolved.

* Low Flow for extended periods oftime, filters occluded.

1) Clean or replace filters;

0000

After Start Up conditions:
4

Continuous mode:
Low O2: between 85
to 70%

0800* ATF gear motor slow or not turning,
ATF has moisture.

* (yellow light is flashing)* Compressor slow or not working2) If device has been in storage, attempt to run for 24hours continuously to bring up the purity;
3) Check gear motor on ATF is turning, replace ATF if
needed (PN: SP9729-SEQ);* PCB set not calibrated, malfunctioning 4) Check Compressor is not labored, squeaking;replace if not working (PN: SP9238-SEQ);
5) Replace PCB set (PN: SP9710-SEQ).
5

Continuous mode:
Low O2: between 70
and 50%0400

Loss of Power

1) Check gear motor on ATF is turning, replace ATF isneeded (PN: SP9729-SEQ);* Compressor slow or not working

2) Check Compressor is not labored, squeaking;* PCB set not calibrated, malfunctioning replace if not working (PN: SP9238-SEQ);
3) Replace PCB set (PN: SP9710-SEQ).

* (Red light is flashing, alarm beeping)6* ATF gear motor slow or not turning,
ATF has moisture.

4000

Power has been lost to the SAROS(unit beeps for 2 sec, and switches toattached battery - if present)

1) Check if the front panel power verification LED is lit;
2) Check the power source for proper voltage, review
spec chart to details;
3) Check/replace External power supply for functionality (PN: 9726-SEQ or PN: 9727-SEQ);
4) replace External power connector (PN: 9766-SEQ)
5) Replace PCB set (PN: SP9710-SEQ).

7

Flow Rate error

2000

A block to flow greater than 10% is de- 1) Find tubing blockage and remove;tected for more than 60 sec, unit beeps 2) if blockage is within SAROS device - remove tubing
and yellow light is on.
and investigate filters.
Unit will establish normal use after 30
seconds of unblocked patient circuit.

9100

Environment too hot, Compressor too
hot

Yellow LED will be
flashing

8Compressor too hot(>115°F)

1) Allow device to cool;
2) Check the cooling fan, replace Compressor cooling
fan if not rotating smoothly or at all (PN: 9767-SEQ)
3) If after cooling, the Compressor is damaged orsqueaking, replace Compressor (PN: SP9238-SEQ).

Table 11-3. Troubleshooting Guide

9735-SEQ M | 47

Operator & Service Manual
Indications
9

CodeBreath rate malfuncA200
tion (Pulse Mode only)

Possible Cause
While in Pulse mode, the breath rate
was not sensed for more than 60 sec.

Remedy1) Press Mode button to re-establish Pulse Mode, if
SAROS switched to Continuous;
2) Ensure patient is breathing through their nose, nottheir mouth;
3) Adjust Pulse Sensitivity to a more sensitive setting.
See menu options for adjustment;
4) Ensure the SAROS does not have a humidifier attached. Acts as a water block to negative inspiration;5) Ensure tubing length does not exceed 7 ft.

10Battery communication error

9500

Battery is not communicating with the
SAROS.

1) Re-connect the battery;

Battery indicator is flashing, or notthere when battery is connected.

3) Check the bridge pcb connector for damage, replace
BBB wiring harness if needed (PN: 9201-SEQ);

2) Test the Battery on another unit to ensure the samecode, replace battery;4) Replace the PCB set (PN: SP9710-SEQ).
11

12

Battery too HOT(>105°F)

9510

Battery too Hot toChargeXXXXBattery indicator not scrolling - waterfalling (scroll bottom to top)

1) Remove battery and allow to cool;

Battery will not waterfall (scroll bottom
to top)- indicates not charging (no code
expected)

1) Check battery connection is proper;

2) Replace with cool Battery.

2) Reset battery connection locking pin brass barrel;3) check condition of Battery wiring harness, replace if
damaged (PN: 9201-SEQ);
4) Replace PCB set (PN: SP9710-SEQ).

13

14Power Board too Hot(>115° F)
Motor Driver Board
too Hot (>115° F)

9200

9300

Charging has stopped, Device shut
down, the alarm is on, and the ambient
temp is above temp limits.

1) Allow PCB set / Device to cool in the shade or A/C
environment

Charging has stopped, Device Shut
down, the alarm is on, and the ambient
temp is above temp limits.

1) Allow PCB set / Device to cool in the shade or A/C
environment;2) Once cooled, check functionality to spec.

2) Once cooled check functionality to spec;3) Replaced Failed PCB set (PN: SP9710-SEQ).

15

Battery is too Cold(<40° F)

95C0

No waterfall effect (scroll bottom to top) 1) Remove Battery from device. Position battery in an
on display.
environment above 40 degrees (F);2) Allow to warm to in-spec temperature internal to thebattery. Re-insert Battery;3) Replace with warmer battery.

16

17

Low Battery Condition 9540

Front Panel Key Stuck 8110

Battery Icon is blinking, Yellow light ison, Device is beeping (2 beeps at 119sec), </= 6 minutes remaining.

1) Plug into External power;2) Replace with fully charged Battery.

A key is stuck for more than 7 seconds. 1) Remove and replace front membrane panel(NOTE: Utility or tool button/key will not (PN: 9731).
activate this alarm.)
Table 11-3. Troubleshooting Guide (continued)

WARNING: DO NOT Ignore Alarms. System will attempt to produce oxygen under fault condition but may not be at purity
or flow.

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11.7 REMOVAL PROCEDURES
11.7.1 BATTERY INTERFACE PLATE, RAIN GUARD, AND SLEEVE
11.7.1.1 Remove the three screws (Part# 9914-6-SEQ) and remove the Battery Interface Plate (Part# SP9939-SEQ).

Battery Interface
Plate Part
# SP9939-SEQ

ScrewsPart# 9914-6-SEQ
Figure 11-2. Removal of the three BIP screws

11.7.1.2 Removing the two screws (Part# 9960-4-SEQ) from theRain Guard (Part# 9292-SEQ)

ScrewsPart#9960-4-SEQ

Rain Guard
Part# 9292-SEQ
Figure 11-3. Removal of the three Rain Guard Screws

11.7.1.3 Detach the Rain Guard (Part# 9292-SEQ) from the
Alignment Ring

Rain Guard
Part# 9292-SEQ

Figure 11-4. Removal of the Rain Guard

11.7.1.4 Remove the Ring SLEEVE (Part# 9928-SEQ) to expose
wiring.
NOTE: Ensure both O-Rings (Part # 9374-SEQ) remains with the
Ring Sleeve.

9374-SEQ

9928-SEQ

Figure 11-5. Removal of Sleeve Alignment Ring

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Operator & Service Manual
11.7.1.5 Remove Fiberglass Sleeve (Part# 9280-SEQ) from therails

Sleeve: 9280-SEQ

Figure 11-6. Fiberglass Sleeve

11.7.2 INLET CAP REMOVALNOTE: Use ESD Controls when removing the Inlet Cap.
11.7.2.1 Loosen the four CAPTIVE screws (Part# 9291-SEQ)
and remove the Air Inlet Cover (Part# 9758).

Captive
ScrewsFigure 11-7. Air Inlet Cover Removal

11.7.2.2 Remove and disconnect the 9V Battery (Part# 9257SEQ) and the Air Inlet Filter (Part# 9798-SEQ).
Filter

9V battery

Figure 11-8. Filter Screen & 9V Removal

11.7.2.3 Remove three Inlet Cap Mounting screws (Part# 99146-SEQ).

inlet cap
mounting Screws(NOT CAPTIVE)
Part# 9914-6-SEQ
Figure 11-9. Inlet Cap Screw Removal

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Operator & Service Manual
11.7.2.4 Cut green cable tie and disconnect the Oxygen Outlet
Tube from the Flow Valve.

oxygenoutlettube

Figure 11-10. Oxygen Outlet Tube Disconnect.

11.7.2.5 Remove tape (Part# 2696-SEQ) from Front Panel Flex
Cable and Top Mounting Struts (Part# 9778-SEQ). Lift up locking connector and disconnect the Front Panel Flex cable.

front panel
flex cable
Figure 11-11. Front Panel Flex Cable Disconnect

11.7.2.6 Disconnect the Ambient Air Thermistor Connector and
9V Battery Connector.
9V Battery
connector

ambient
thermistor
connector

Figure 11-12. Thermistor Connector and 9V Battery Connector

11.7.2.7 Loosen the screws for the AC Power Connector andremove the wires.

loosenFigure 11-13. Inlet Cap Power9735-SEQ M | 51

Operator & Service Manual
11.7.2.8 Disconnect the Breath Detect Tube.

disconnect
Figure 11-14. Tube Disconnect

11.7.2.9 Remove the Inlet Cap (Part # SP9756-SEQ) and guide
AC Power Cable under the frame of the PCB Assembly.

Guide
Wires
Figure 11-15. Inlet Cap Removal

11.7.2.10 Remove the 3 screws (9912-1) to detach the Top Strut (9778-SEQ).

Figure 11-16. Detach Top Strut

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11.7.3 REMOVE PCB ASSEMBLYNOTE: Always use ESD Controls when handling the PCB Assembly.
11.7.3.1 Loosen the Battery Power Wire screws and remove wires.
11.7.3.2 Disconnect the Compressor Thermistor wires.
11.7.3.3 Disconnect the Halls Effect wire.
11.7.3.4 Loosen the Compressor Power screws and remove the wires.

4-Loosen

3--Disconnect
2--Disconnect

1-LoosenFigure 11-17. Battery Power Wires for Battery Interface

11.7.3.5 Disconnect Battery Communication Connector.
11.7.3.6 Disconnect the ATF Stepper Motor Connector from the
PCB.

Battery communications
connector (5 pin)

Fan Connector(red and black
wires)

ATF Thermistor(blue wires)

ATF stepper
motor connector(4 pin)Figure 11-18. Communication Connector for Battery Interface
ATF Stepper Motor Power, Fan Disconnect, ATF Thermistor

11.7.3.9 Cut the cable tie and remove the Flow Tube from theProduct Tank.
NOTE: It is recommended to cap this outlet using a piece of tapeduring the repair process. Do not leave the plug open to atmospherelonger than it takes to preform the repair process. If this port is exposed longer than 24 hours, it must be completely sealed to prevent
damage to the ATF. If just exposed during repair, tape is sufficient toprevent any damage.

• Cut Cable Tie• Remove Tubing• Cap Brass
Fitting

Figure 11-19. ATF Thermistor Disconnect

11.7.3.10 Remove 2 screws on the Left STRUT (9779-SEQ).
11.7.3.11 Remove 2 screws on the Right STRUT (9780-SEQ).
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Operator & Service Manual
11.7.3.12 Slide the PCB Assembly away from the struts. (Placein ESD bag.)
NOTE: Always use ESD Control when handling the PCB Assembly.

Figure 11-20. PCB Assembly
11.7.3.13

Place PCB Set in ESD Protective Bag.
11.7.4 PROPORTIONAL VALVE REMOVAL (5293-SEQ)

11.7.4.1 Remove Proportional Valve wire from PCB Assembly(if not done so already).

proportional
valve connector

Figure 11-21. Proportional Valve Wire
11.7.4.2 Remove the two screws from the Proportional valve.
NOTE: If Removing the Compressor Fan go to Step 12.9
11.7.4.3 Cut and remove Cable Tie from Proportional valve andremove tubing.

Figure 11-22. Proportional Valve Tube
11.7.4.4 Remove the Proportional Valve (5293-SEQ) from the
Proportional Valve Block and replace.

Figure 11-23. Replace Proportional Valve54 | 9735-SEQ M

Operator & Service Manual
11.7.5 COMPRESSOR FAN REMOVAL (9767-SEQ)
Remove Compressor Fan wire from PCB Assembly (if not done
so already).

Figure 11-24. Remove Compressor Fan wire

11.7.5.1 Lift the Proportional Valve out of the way (See Proportional Valve Removal Step 3.4)

Figure 11-25. Lift the Proportional Valve

11.7.5.2 Loosen Compressor Fan screws (9913-10-SEQ) Remove the Fan subassembly (9767-SEQ) from the Compressor
Bulkhead.

Figure 11-26. Compressor Fan

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11.7.6 BATTERY CABLE REMOVAL (9201-SEQ)
11.7.6.1 Pull out the wires from the grommets on the bulkheadof the Compressor as shown in figure below.
Hall EffectSensor

Hall EffectSensorFigure 11-27. Hall Effect Sensor

11.7.6.2 Remove the two large wires (Battery Connector Cable)
thru the middle Bulkhead as shown in figure below.
11.7.6.3 Remove the Wire Sleeve with the wires thru the Bulkhead.
ATF power & ATF
thermistor wire
connector cable

3” wire sleeve(9638-SEQ)

Battery Connector
Cable (9201-SEQ)

Figure 11-28. Remove Wire Sleeve

11.7.6.4 Cut and remove the 6 Cable Ties (part# 6968-SEQ) on the Side Rail & Cable Ties that group the Cable bundle together.
CAUTION: Do not cut wires.

Figure 11-29. Cable Ties and Rails

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Operator & Service Manual
11.7.6.5 Cut and remove all four Cable Ties between the STRUT (9779-SEQ) and the ATF Assembly.
CAUTION: Do not cut wires or damage insulation.

Figure 11-30. Cable Ties and Struts

11.7.7 RAIL REMOVAL
11.7.7.1 Remove five screws (part# 9912-1-SEQ) from left strut (9779-SEQ).
Side Strut

Figure 11-31. Left Strut

11.7.7.2 Remove five screws (part# 9912-1-SEQ) from right strut (9780-SEQ).

Side Strut

Figure 11-32. Right Strut

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11.7.8 ATF & COMPRESSOR / TANK ASSEMBLY REMOVAL
11.7.8.1 Remove Kapton Tape (2696) from the Muffler Assembly and left strut (9779-SEQ), as shown in figure.
Muffler Assy2x3” tape

Cut cable
tie here

Figure 11-33. Kapton Tape

11.7.8.2 Remove exhaust tube and ATF to product tank tubing. Cap the connection port on the ATF that is exposed when thetubing is removed.

ExhaustTube

Figure 11-34. Exhaust tube

11.7.8.3 Cut and remove 2 Cable Ties (6968-SEQ) as shown on
figure below.
NOTE: Leave the cable tie closest to the Compressor/Product Tank
Assembly Intact.

Figure 11-35. Cable Ties

11.7.8.4 Remove the silicone tubing from the ATF, leaving thetubing attached to the Compressor Assembly.
NOTE: May need to carefully pry tubing from ATF ports with a tool.

Figure 11-36. Silicone tubing

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Operator & Service Manual
11.7.8.5 Cap both ATF ports (Feed and Vacuum ports).

Cap 2X

Figure 11-37. ATF ports

11.7.8.6 Remove the ATF Bulkhead FROM the bottom of the
ATF Module Assembly as shown in figure below.
NOTE: Mark the position for installation.

ATF module assy
(SP9729-SEQ)

ATF bulkhead assy
(9922-SEQ)

Figure 11-38. ATF bulkhead

11.8 INSTALLATION PROCEDURES
11.8.1 GENERAL PROCEDURE
11.8.1.1 Thread Locking Procedure: When applying thread
locker to screws, apply 1 drop of the appropriate thread locking
fluid to the first four threads of the screw/standoffs as show in
the figure below. The Loctite 222MS will be used unless specified otherwise.

Thread Locker

Figure 11-39. Thread Locking Procedure

11.8.1.2 CABLE TIE INSTALLATION PROCEDURE: All
cable ties will be installed using cable tie gun unless specified
otherwise.

Figure 11-40. Cable tie installation

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Operator & Service Manual
11.8.2 ATF & COMPRESSOR/PRODUCT TANK INSTALLATIONNOTE: A flow calibration procedure is required after replacing the ATF or Compressor, the PCB Circuit Board, the Proportional Valve. If
any of these components are replaced, flow calibration is required. Flow calibration can be done at a CAIRE authorized service center orin the field using item T-10560. See manual MN053 for details on performing flow calibration and firmware updates in the field using item
T-10560.
11.8.2.1 Install the ATF Bulkhead Assembly onto the bottom of
ATF Module Assembly as shown in figures below.
Grommet(9739-SEQ)

ATF bulkhead(9922-SEQ)

Figure 11-41. ATF Bulkhead

11.8.2.2 Place the ATF Assembly and Compressor Assembly
next to each other and align as shown in figure below.

ATF module assy
(SP9729-SEQ)

ATF bulkhead
assy (9739-SEQ)

Figure 11-42. Align

11.8.2.3 Remove Caps (3575-SEQ) from the ATF. Insert thePorts from the ATF into the tubes on the Compressor /Tank Assembly. Press the ATF & Compressor together and ensure thatthe hoses are positioned properly.
NOTE: Pre-wet inner tubing on compressor with alcohol. Also, wetmetal barbs on the ATF.

Remove caps

Figure 11-43. ATF caps

NOTE: Use Isopropyl Alcohol to lubricate the Tube and the Barb anduse a Mechanics Grabber Pliers to attach the down pipe hose fromthe Compressor Assembly to the fitting on the ATF Module Assembly.
pliersFigure 11-44. Down pipe Hose60 | 9735-SEQ M

Operator & Service Manual
11.8.2.4 Apply cap (1137-SEQ) to Product Tank outlet fitting toprevent ATF desaturation!

cap off
fitting

Figure 11-45. Cap

11.8.2.5 Apply 2 Cable Ties as shown on figure.
NOTE: Pre Loop Zip Ties.

Figure 11-46. Cable Ties

11.8.2.6 Attach the Exhaust Filter, Tube, Muffler Assembly and Tube, Muffler as shown in figure below.
NOTE: Ensure Arrow on Filter points in the correct direction. Install Cable Ties (6968-SEQ) as shown in figure below. Ensure the compressor exhaust elbow tubing is through the bulkhead before/during assembly.
While applying Kapton tape, pull muffler tube to establish clearance. Make sure that tube, muffler, and muffler tube are laying
down on ATF surface.
NOTE: Pulling too hard on the Exhaust Tube may cause the tube to tear.
exhaust filter(9221-SEQ)

tube(9227-SEQ)

2x3” kapton tape(2696-SEQ)

muffler assy
(SP9314-SEQ)

muffler tube
(9390-SEQ)

v
pull

v
clearance
Figure 11-47. Open SAROS

9735-SEQ M | 61

Operator & Service Manual
11.8.2.7 Install the ATF Product Pipe onto the Product Tank with Silicone tubing and secure with Cable ties. Install the otherend onto the ATF with the Product Tube and Clamp as shown in figure below.
0.5” silicone tube
(SP6981-SEQ)

cable tiex2 (6968-SEQ)

ATF productpipe (9342-SEQ)

clamp x2
(9369-SEQ)

ATF producttube (9797-SEQ)

Figure 11-48. Open SAROS

11.8.3 RAIL INSTALLATION
11.8.3.1 Attach RIGHT STRUT (9780-SEQ) with five screws (9912-1-SEQ) with and torque to 6.0 in-lbs.
NOTE: Top bulkhead screw not shown.

Figure 11-49. Right Strut

11.8.3.2 Rotate assembly, route the ATF wires (stepper motor
and ATF thermistor wires) under the slot of the LEFT STRUT(9779-SEQ).
NOTE: Pre-install cable ties in rail holes prior to installation.

Slot inrail

Figure 11-50. Route ATF wires

11.8.3.3 Secure the STRUT (9779-SEQ) with five screws andtorque the screws to 6.0 in-lb.

ATF wires, verify
loop for proper
lengthLEFT STRUT(9779-SEQ)

Figure 11-51. Secure

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Operator & Service Manual
11.8.4 BATTERY CABLE INSTALLATION
11.8.4.1 Secure two Cable Ties through the holes in LEFT STRUT (9779-SEQ) and round all wires.
Secure two Cable Ties around all wires (battery cables & ATF Bundle).
Apply one Cable Tie around all battery cables, close to the battery board, as in Figure below.
NOTE: Leave the Cable Ties loose in case slack is needed at the PCBA assembly.
NOTE: Ensure slack to wires where indicated.
Orient the Cable Tie knots towards the Compressor.
cable ties (6968-SEQ)
through STRUT holes

cable tie
(6968-SEQ)

ATF wiresgo through slot

cable ties (6968-SEQ)
secure all cables
Figure 11-52. Cable Tie Knots

11.8.4.2 Wrap the Wire Sleeve around the ATF wires and pass thru the Bulkhead.
Pass the two Battery wires from the Battery Connector thru the Bulkhead as shown in figure below.
ATF power &ATF thermistor
wires

3” wire sleeve(9638-SEQ)

battery
connector
cable (9201-SEQ)

Figure 11-53. Wire Sleeve9735-SEQ M | 63

Operator & Service Manual
11.8.4.3 Secure the Battery Power wires on the LEFT STRUT (9779-SEQ) with Cable Tie.
NOTE: Leave the Cable Ties loose in case slack is needed at the PCBA assembly.
NOTE: Ensure slack to wires where indicated.
cable ties
6968-SEQv slack

Figure 11-54. Secure Battery Wires

Orient the Cable Tie knots towards the Compressor.

11.8.4.4 Secure the ATF Bundled wires to the Battery Power Cables with cable ties.
NOTE: Leave the Cable Ties loose in case slack is needed at the PCBA assembly.
11.8.4.5 Ensure that there is slack on the wires on the areas indicated.
v slack

cable ties 6968-SEQ

Figure 11-55. Slack

11.8.4.6 Install the Grommet onto the Bulkhead to secure the
ATF and Battery wires.
Route the Battery Power wires and Hall Effect wire under themounting Compressor screw and through the Bulkhead grommet
as shown in figure below.
Route the ATF wire bundle under the STRUTS prior to rail installation and through the Bulkhead grommet as shown in figure
below.

ATF power & ATF thermistor
wires from battery connector

thermistor
wires

NOTE: Do not pinch Thermistor Cable in bulk head.

compressor
power

hall effect sensor& battery power wires
Figure 11-56. Secure ATF

64 | 9735-SEQ M

v slack

Operator & Service Manual
11.8.5 COMPRESSOR FAN REPLACEMENT
11.8.5.1 Attach the Fan subassembly (9767-SEQ) with the flow
arrows towards the Bulkhead as shown on figure. Apply Loctite
222MS (1405-SEQ) on the screws and torque to 2.0 in-lbs.

note wire
locationscrews9913-10-SEQ
Figure 11-57. Fan

11.8.5.2 Connect the Compressor Fan wire to the PCB Assembly(If PCBA Assembly is connected)
ATF wires go
through slot

fan connector
Figure 11-58. Compressor Fan Wire

11.8.6 PROPORTIONAL VALVE REPLACEMENT (5293-SEQ)
NOTE: A flow calibration procedure is required after replacing the ATF or Compressor, the PCB Circuit Board, the Proportional Valve. If
any of these components are replaced, flow calibration is required. Flow calibration can be done at a CAIRE authorized service center orin the field using item T-10560. See manual MN053 for details on performing flow calibration and firmware updates in the field using item
T-10560.
11.8.6.1 Attach the two screws from the Proportional valve in to the Proportional Block (White) below it and Torque to 3.8 inlbs.
screws9203-7-SEQ

proportional
valve block
9231-SEQ
Figure 11-59. Proportional Valve9735-SEQ M | 65

Operator & Service Manual
11.8.6.2 Secure the Flow Tube with a Cable Tie to the Proportional valve.

cable
tie

Figure 11-60. Secure

11.8.6.3 Connect Proportional Valve wire to the PCB Assembly
proportional
valve
connector

Figure 11-61. Connect

11.8.7 INSTALLATION OF PCB ASSEMBLYNOTE: A flow calibration procedure is required after replacing the ATF or Compressor, the PCB Circuit Board, the Proportional Valve. If
any of these components are replaced, flow calibration is required. Flow calibration can be done at a CAIRE authorized service center orin the field using item T-10560. See manual MN053 for details on performing flow calibration and firmware updates in the field using item
T-10560.
11.8.7.1 Position the PCB Assembly between the 2 STRUTS(9779-SEQ & 9780-SEQ). Install 2 Screws on each side andtorque the Screws to 6.0 in-lbs.

screws9912-1-SEQ

Figure 11-62. Screws

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Operator & Service Manual
11.8.7.2 Insert and secure the Battery Power and Compressor Power Wires where shown. Use a flat blade screwdriver totighten and torque the screws to 4.4 in-lbs.
NOTE: Battery wire polarity indicated on the PCBA. Red is (+) andBlack is (-).

compressor
power wires

battery
power
wires

Figure 11-63. Secure

11.8.7.3 Connect the Thermistor Connector to the PCBA
11.8.7.4 Connect the Hall Effect Connector to the PCBA
NOTE: Ensure there is enough slack to the Hall Effect Wire

Figure 11-64. Connect

11.8.7.5 Connect the Fan Connector to the PCB and connect
flow tubing.

Figure 11-65. Fan Connector

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Operator & Service Manual
11.8.7.6 Attach the Flow Tube into the Product Tank. Secure theFlow Tube with Cable tie.

Figure 11-66. Flow Tube

11.8.7.7 Tighten and secure all wires with Cable Ties.
NOTE: Orient ALL Cable Tie knots towards the Compressor.

V

SLACK

cable ties
(6968-SEQ)

Figure 11-67. Tighten

11.8.7.8 Tighten and secure all wires with Cable Ties.
NOTE: Orient ALL Cable Tie knots towards the Compressor.

cable ties
(6968-SEQ)

Figure 11-68. Tighten

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Operator & Service Manual
11.8.7.9 Add Cable Tie to hold wires away from the coil. Handtighten loose as in Figure below.

cable tie
(6968-SEQ)

Figure 11-69. Cable Ties

11.8.7.10 Attach Top STRUT (9778-SEQ) with 5 screws as shown on figure below. Torque the screws to 6.0 in-lbs.

STRUT(9978-SEQ)

screws(9912-1-SEQ)

Figure 11-70. Top strut

11.8.8 POWER CONNECTOR REPLACEMENT (9766-SEQ)
11.8.8.1 After performing steps 11.7.1.1 thru 11.7.1.8 from “INLET CAP REMOVAL”
11.8.8.2 Remove the four screws (9203-2-SEQ) and remove thePower Connector (9766-SEQ).

screwspower connector(9766)

Figure 11-71. Remove screws

11.8.8.3 Install new Power Connector (9766-SEQ). Use Loctite
222 on the four mounting screws. Replace O-Ring (9916-3SEQ) if necessary.

Figure 11-72. Power Connector

11.8.8.4 Perform steps 11.8.10.4 – 11.8.10.11 from section “Inlet
Cap Installation”.

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Operator & Service Manual
11.8.9 MEMBRANE PANEL REPLACEMENT (9731-SEQ)
11.8.9.1 After performing steps 11.7.1.1 thru 11.7.1.8 from “INLET CAP REMOVAL”.
11.8.9.2 Peel off the User Panel (9731-SEQ) as shown in the
figure below.

Figure 11-73. Peel

11.8.9.3. Clean the surface shown in the figure below with Isopropyl Alcohol before re-applying the new User Panel.

clean
surface

Figure 11-74. Clean

11.8.9.4 Remove the PSA protective cover from the new User
Panel (9731-SEQ). Insert the Flex Cable as shown in the figure
below.

Figure 11-75. Remove PSA cover

11.8.9.5 Position and apply the new User Panel as shown in the
figures below. Press firmly on the entire surface of the new User
Panel to insure that it is bonded correctly.

Figure 11-76. Apply new User Panel

11.8.9.6 Reconnect the small tube (4056-SEQ [2.3”]).
11.8.9.7 Perform steps 11.8.10.4 - 11.8.10.11 from section “INLET CAP INSTALLATION”.

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11.8.10 INLET CAP INSTALLATION (SP9756-SEQ)
11.8.10.1 Place O-Ring in the Ring Sleeve.

O-Ring(9374-SEQ)

Ring Sleeve(9928-SEQ)

Figure 11-77. O-ring attached11.8.10.2 Align and slide the three O-Rings in the Ring Sleeveover the three struts.
NOTE: Verify arrow points towards the inlet cap.

Figure 11-78. Arrows on O-ring

11.8.10.3 Place the Inlet Cap (SP9756-SEQ) over the STRUTS
so that the LCD Display is lined up with the Membrane Panel
Window.

9928-SEQ

Figure 11-79. Inlet Caps

11.8.10.4 Connect the Breath Detect Tube.

breathdetecttube

Figure 11-80. Breach Tube

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Operator & Service Manual
11.8.10.5 Insert Power Harness wires from the Inlet Cap andtighten the screws to 4.4 in-lbs.
NOTE: Battery wire polarity indicated on the PCBA. Red is (+) andBlack is (-).
power
harness

Figure 11-81. Power Harness Wires

11.8.10.6 Insert Front Panel Flex cable flush with locking connector. Apply 2” of Kapton Tape (2696-SEQ) on the Mounting
STRUT.
front panel
flex cablesecuring tape(2696-SEQ)
Figure 11-82. Flex cable

11.8.10.7 Connect the Ambient Air Thermistor and connect 9V
Battery Connector as shown.

9v battery
connector

Ambient Air
Thermistor

Figure 11-83. Ambient Air Thermistor

11.8.10.8 Attach the Oxygen Outlet Tube (6981-SEQ) to the
Flow Valve outlet port and secure with a cable tie.

oxygentube

Figure 11-84. Oxygen Outlet Tube

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11.8.10.9 Secure the three Inlet Cap Mounting screws (9914-6SEQ) to each STRUT.

inlet cap
mounting screws
9914-6-SEQ

Figure 11-85. Inlet Cap mounting screws

11.8.10.10 Insert and connect the 9V Battery (9257-SEQ) andthe Filter (9798-SEQ).

filterFigure 11-86. 9V battery

11.8.10.11. Align the Air Inlet Cover (9758-SEQ) to the top of
the SAROS and tighten the four screws (P9291-SEQ).

tightenscrewsFigure 11-87. Align covers and tighten

11.8.11 INSTALLATION OF THE SLEEVE & BATTERY INTERFACE PLATE
11.8.11.1 Slide Sleeve (9280-SEQ) and Ring sleeve with ORings (9928-SEQ) over struts, and insert it into Aligning Ringthat is attached to the Inlet Cap.

sleeveFigure 11-88. Slide Sleeves9735-SEQ M | 73

Operator & Service Manual
11.8.11.2 Align second Sleeve (9928-SEQ) AND O-RING(9928-SEQ) over the STRUTS, to the Sleeve leaving the Battery
board exposed.

alignmentring

Figure 11-89. Second sleeve

11.8.11.3 Attach the Battery Interface Assembly (9292-SEQ) to
the Rain Guard by attaching the two screws (9960-4-SEQ).

Figure 11-90. Battery Interface Assembly

11.8.11.4 Align and attach the Exhaust tube to the Exhaust porton the Rain Guard.

Figure 11-91. Attach

11.8.11.5 Align the three screws (9914-6-SEQ) of the Battery
Interface Plate (SP9939-SEQ) to the Rain Guard.

Figure 11-92. Align74 | 9735-SEQ M

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12.0 SERVICE RECORDS & RETENTION
12.1 RECORD HOURS OF OPERATION AND SOFTWARE VERSION
To help maintain the SAROS, you may obtain the Total Hours of Operation and software version numbers for the Control Board.
To obtain system information, follow these steps:
Press the “Utility” Button on the control panel and advance to the following display mode for each time the icon is depressed:• Tactical Mode
• Pulse Sensitivity• Tactical Brightness• Hour of Operation• Alarm Code• LCD Contrast• Normal Brightness• System Software Version• Tactical Volume• 9-volt Battery Status• Motor Software Version
Total Hours of Operation
Alarm Code
Pulse Sensitivity
LCD Contrast
Tactical Volume
Tactical Brightness
Normal Brightness
9-Volt Battery Status
Hour Meter
System Software Version
Motor Software Version
Table 12-1. Log the Results

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Operator & Service Manual
12.2 SERVICE AND MAINTENANCE RECORD
Whenever maintenance or service is performed on an SAROS unit, an entry should be made in the service log for that concentrator or recorded in accordance with your company’s standard procedure. Whenever the sleeve of the SAROS is removed, the flow
rate, purity, and alarm status should be verified per the Test Procedures in this manual.
SAROS Serial Number:
Date

Hour Meter
Reading

InitialsService
Performed							

PurityTable 12-2. Sample SAROS Maintenance Record

76 | 9735-SEQ M

Flow

AlarmsComments

Operator & Service Manual

APPENDIX A
A.1 SAROS PERFORMANCE VERIFICATION CHECKLISTSAROS Serial Number:
Hours of Operation:

Date of Testing:A. General Operation Test

Pass

Fail

Acceptable Range

Recorded Reading

1) Battery installs properly
2) External power cord (AC or DC)
connects securely
3) Unit powers on after holding ON/OFF
button for 3 seconds
4) Audible alarm sounds upon start-up5) 5-minute warm up period complete with
no audible alarm
6) Utility Mode shows no active alarms after
5-minute warm up7) Battery icon visible on screen8) Battery is charging or already fully
charged9) Increase and decrease flow buttons arefunctional
10) Pulse flow mode button is functional11) No breath alarm is functional
12) Unit runs on battery power13) No battery alarm is functional
14) Automatic re-start when power is reconnected

B. Flow and O2 Concentration Test

1) Continuous Flow Setting Verification
C3 (3.0 LPM) ) O2 Concentration

90 - 96 %C3 (3.0 LPM) flow -- 60 second averagereading1

Argon-Compensated Testing Device:
2.70 - 3.30 LPM

C2 (2.0 LPM) ) O2 Concentration

90 - 96 %C2 (2.0 LPM) flow -- 60 second averagereading1

Argon-Compensated Testing Device:
1.80 - 2.20 LPM

Non Argon-Compensated Testing Device:
2.60 - 3.20 LPM
Non Argon-Compensated Testing Device:
1.70 - 2.10 LPM

2) Pulse Flow Mode Verification
P48 (48 mL) -- 5 bolus average reading

40.8 - 55.2 mL

1:

2:

3:

4:

5:

Avg:

P96 (96 mL) -- 5 bolus average reading

81.6 - 110.4 mL

1:

2:

3:

4:

5:

Avg:

C. Battery Run Time Test
C3 (3.0 LPM)

Acceptable Range

Recorded Reading> 24 minTable A-1. SAROS Performance Verification Checklist

Footnotes: (1) The SAROS is BTP compensated. If measuring concentration and/or flow with a device that is non-Argon compensated andnon-BTP compensated, the acceptable range of the device readings will be reduced by 0.1 LPM.
Technician Name (print): _______________________________________
Technician Signature: _________________________________________

Date: _______________________

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NOTES

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NOTES

9735-SEQ M | 79

w w w. caire in c.c o m

CAIRE Inc.
2200 Airport Industrial Dr., Ste. 500
Ball Ground, GA 30107 U.S.A.
Medical Product Service GmbH
Borngasse 20
35619 Braunfels, Germany
Tel: +49 (0) 6442-962073
Email: info@mps-gmbh.eu
CAIRE and CAIRE Inc. are registered trademarks of CAIRE Inc. Please visit our website below
for a full listing of trademarks. Trademarks: www.caireinc.com/corporate/trademarks/.
Salter Labs® is a registered mark of Salter Labs, Arvin, CA 92303.
Lysol® is a registered trademark of Reckitt Benckiser, UK.
Copyright © 2022 CAIRE Inc. CAIRE Inc. reserves the right to discontinue its products, or change
the prices, materials, equipment, quality, descriptions, specifications and/or processes to its
products at any time without prior notice and with no further obligation or consequence. All rights
not expressly stated herein are reserved by us, as applicable.

27 Apr 2022

PN 9735-SEQ Rev M