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November 2023 Med Tips
Don't miss out on our upcoming Virtual Service Schools!
CAIRE Service School Trainings and Webinars 2023
CAIRE offers In-person and Virtual Service Schools covering both LOX and Concentrator lines.
Each class is a comprehensive program that focuses on the technical and service aspects of the CAIRE
family products. Class time is divided between lecture and hands-on workshops. The seminars will help
the student develop a better understanding of how liquid oxygen equipment or concentrators work,
how to identify the symptoms and causes of potential problems and how to use the technicalinformation that is available in the Technical Manuals. Registration for CAIRE’s Service Schools ismandatory. Registration forms must be received two weeks prior to the start of the class in order toguarantee availability and materials.
Table 1 - Details of upcoming training.
TypeConc Europe**
LOX Europe**

Language
EnglishEnglishLocation
Toulouse, France
Toulouse, France

Training Dates
21-22 November
23 November

Registration by Training Type
open
Remoteopen
Remote*We reserve the right to cancel training seminars at short notice. Customers should ensure that theytake necessary precautions to ensure costs are covered in case of cancellation.
** Training will be in the form of a Webinar.
Concentrator Service School Topics include:• Concentrator hazards and safety precautions• Principles of pressure, flow, and saturation• Functions of the major components of a portable/stationary concentrator• Theory of operation• Set up and use of test equipment• Troubleshooting, repair and performance verification/testing procedures
LOX Service School Topics include:• Liquid oxygen (LOX) hazards and safety precautions• Principles of pressure, flow and liquid oxygen saturation• Functions of the major components of a liquid oxygen system• HELiOS™ system theory of operation• Reservoir and portable filling procedures• Set up and use of test equipment

2Please submit your registrations forms no later than the dates in Table 1 above. If you are interested
in the service schools mentioned above, and it is past the registration date, please reach out to theregistration emails below. Please note that as travel restrictions, and Covid-related guidelines evolve,
we intend to restore CAIRE Service School to in person.
To register for Service School, please email:Techservice.global@caireinc.com for USA Training or jim.gibson@caireinc.com for European Training.

PRODUCT UPDATESCompanion® Reservoirs and Portables End of Service Life - REMINDERCAIRE® would like to remind our valued customers the end of Service Life for the Companion range isthe 12/31/2018. CAIRE will provide parts and service for the Companion C31/C41 Oxygen Reservoirs andCompanion C1000/C1000T until 12/31/2023. After this date CAIRE may continue to provide parts andservice at the company’s discretion.
For stationary oxygen Reservoirs, customers can use the Liberator Reservoirs, these are available in awide variety of sizes and have the benefit of allowing flow rates up to 15 LPM. The C1000/C1000T
portables will be replaced by the Stroller/High Flow Stroller models giving customers the added optionof being able to choose our side fill systems.
For further information please contact the Technical Service Team. Service bulletin 21285171.

CAIRE® POC battery lithium content
The table below details the battery lithium content of the CAIRE’s Portable Oxygen Concentrator.
A Material Safety Data Sheet is available for the batteries upon request toTechservice.global@caireinc.com , this document is required by the Airlines when transporting a
Portable Oxygen Concentrator on board.

3ProductBattery
Part
NumberBattery
OutputVoltage

Battery Capacity

Weight of Lithiumcontained inBattery

Saros9723-SEQ

14.8 VDC

88 W-hours

7.20 grams

Eclipse7082-SEQ

14.8 VDC

2 x 97.5 W-hours

2 x 7.92 grams(15.84 grams Total)eQuinox 12 cell4823-SEQ

14.8 VDC

89 W-hours

7.38 grams

eQuinox 24 cell4972-SEQ

14.8 VDC

2 x 95 W-hours

2 x 7.92 grams(15.84 grams Total)

FreeStyle Comfort 8 cell

BT034-1S14.4 VDC

96.5 W-hours

7.68 grams

FreeStyle Comfort 16 cell

BT035-1S14.4 VDC

2 x 96.5 W-hours

2 x 7.68 grams(15.36 grams Total)

FreeStyle 3 with Internal
Battery

BT018-1S

14.8 VDC

59.2 W-hours

4.8 grams

FreeStyle 5 with Internal
Battery

BT021-1S

14.8 VDC

76.96 W-hours

5.68 grams

FreeStyle 3/5 with
External Battery

BT033-1

14.4 VDC

96.5 W-hours

7.92 grams

Focus

BT023-1

14.8 VDC

38.48 W-hours

3.14 grams

For further information please contact the Technical Service Team.

Helpful Hints & FAQs
Calculating LOX Reservoir Capacity
HOW TO CALCULATE LITERS OF LIQUID OXYGEN IN A RESERVOIRSTEP 1: Weigh the empty reservoir and record the weight (kg/lb)
STEP 2: Fill the unit with properly saturated liquid oxygen (follow the proper filling procedure of a
CAIRE LOX reservoir referenced in service bulletin 20925207)

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STEP 3: Weigh the full reservoir and record the weight (kg/lb)
STEP 4: Subtract the empty reservoir weight (STEP 1) from the full reservoir weight (STEP 3) todetermine the weight of liquid oxygen that is inside of the reservoir
STEP 5: Take the weight of liquid oxygen (calculated in STEP 4) and divide it by the LOX density
to calculate the liters of liquid oxygen in the reservoir
For further information please contact the Technical Service Team. Service bulletin 20937021

Med Tips Distribution!
The CAIRE team is asking all current subscribers to CAIRE’s Med Tips Newsletter to register in order tocontinue receiving this monthly communication.
Please click this link - http://go.pardot.com/l/710913/2022-01-17/2pgcj9 - and provide us with yourcurrent information. Thank you and we appreciate your support.

CONTACT:For technical questions or concerns, contact Technical Service:USA:

800-482-2473

techservice.global@caireinc.com
Europe:+44 (0) 118 936 7060

techservice.global@caireinc.com
For ordering information or general inquires, contact Customer Service:USA:

800-482-2473

customerservice.usa@caireinc.com
Europe:+44 (0) 118 936 7060

customerservice.europe@caireinc.com© Copyright 2023 CAIRE Inc. All Rights Reserved. CAIRE Inc. reserves the right to discontinue its
products, or change the prices, materials, equipment, quality, descriptions, specifications and/orprocesses to its products at any time without prior notice and with no further obligation orconsequence. All rights not expressly stated herein are reserved by us, as applicable.
Please consult the applicable product instructions for use for product indications, contraindications,warnings, precautions, and detailed safety information.

SERVICE
BULLETIN
PN: 21285171

RELEASE DATE:

May 31, 2018

REVISION DATE(S): February 27, 2019 (rev B), May 27, 2019 (rev C)
MODEL:

2018 Companion C31/C41 Oxygen
Companion C1000/C1000T Portables.

ReservoirsandISSUE:

Advanced Notice of Discontinuation - Companion C31/C41 OxygenReservoirs and C1000/C1000T Portables.

NOTES:The Companion C31/C41 Reservoirs and C1000/C1000T Portables aredue to be made obsolete on 12/31/2018. These LOX Products will bemade obsolete due to low sales volume and due to the redundancy with
the newly enhanced Liberator Reservoir Product Line. Until this
discontinuation date, current service, sales and parts needs for all models
will still be fulfilled.
For stationary oxygen Reservoirs, customers can use the Liberator
Reservoirs, these are available in a wide variety of sizes and have thebenefit of allowing flow rates up to 15 LPM. The C1000/C1000T
portables will be replaced by the Stroller/High Flow Stroller models
giving customers the added option of being able to choose our side fillsystems.
C31 / C41 Reservoir and C1000 / C1000T Portables will be available forsale during the rest of 2018 and will be effectively discontinued after
December 31, 2018. CAIRE will provide parts and service for theCompanion C31/C41 Oxygen Reservoirs and Companion
C1000/C1000T until 12/31/2023. After this date CAIRE may continueto provide parts and service at the company’s discretion.

Ref 21285171 Rev C

Page 1 of 2

CONTACT:

For technical questions or concerns, contact Technical Service:USA:

800-482-2473

www.cairemedical.com
Europe:+44 (0) 118 936 7060
www.cairemedical.com
For ordering information or general inquires, contact Customer Service:USA:
800-482-2473
www.cairemedical.com
Europe:+44 (0) 118 936 7060
www.cairemedical.com

Copyright © 2019 CAIRE Inc. CAIRE Inc. reserves the right to discontinue its products, or change theprices, 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 statedherein are reserved by us, as applicable.

Ref 21285171 Rev C

Page 2 of 2

SERVICE
BULLETIN
PN: 20925207

RELEASE DATE:May 29, 2015

REVISION DATE(S):March 20, 2019 (Rev B)

MODEL:All Companion, Helios, and Liberator Liquid Oxygen Reservoirs

ISSUE:

Standardization of Fill Procedure and Preventative Maintenance Interval

NOTES:

Effective immediately the fill and maintenance procedures for all CAIRE
liquid oxygen reservoirs are as follows:

Filling
NOTE: The fill source should have the correct fitting (5/8” x 45° male flare) to connect totransfer line.
WARNING: Filling must be performed in a well-ventilated area to prevent developmentof an oxygen-enriched atmosphere.
WARNING: Wear insulated gloves and eye protection whenever working with liquidoxygen.
1. Fill Source Preparationa. Ensure the source contains a sufficient amount of liquid oxygen tocompletely fill the reservoir.
b. Ensure the liquid oxygen in the fill source is saturated at 2,4-3,4 bar (3550 psig).
NOTE: Proper saturation is critical when filling a CAIRE reservoir. If the fill source is notproperly saturated, the unit will not function correctly, resulting in inaccurate flow rates
and excessive boil off of liquid oxygen. This will cause portable units which are filled off
the reservoir to act in the same manner. Please refer to the Saturation Principles section
to learn more about the importance of proper saturation.

Ref 20925207 Rev B

Page 1 of 6

2. Fill Procedurea. Required Equipment:o Fill source as outlined above
o Liquid oxygen transfer lineo Appropriate transfer line fill adapter
o Appropriate vent valve wrencho Eye protectiono Pressure gauge (for reservoirs not equipped with an internalpressure gauge)o Erie liter metero Insulated gloves
b. If refilling a partially filled reservoir, verify prescribed flow rate(s) is/arewithin tolerance specification(s) using an Erie liter meter before filling.
NOTE: Only refill a partially filled reservoir in accordance with local regulations. If step
2.b is performed prior to filling, then step 2.p can be omitted after filling.
c. Weigh reservoir as required by local and federal standards.
d. Verify that the liquid level meter is operating properly.
NOTE: If flow rates are out of specifications or liquid level meter operates improperly,refer to Troubleshooting section of the corresponding technical manual.
e. Connect transfer line to fill source. Connect proper transfer line adapter
to transfer line.
f. Fully open liquid valve on fill source.
g. Purge transfer line for a minimum of 5 seconds ensuring gas is safely
piped away from operator:
i. Connect transfer hose fill adapter to a securely mounted mating
QDV.
-OR-Ref 20925207 Rev B

Page 2 of 6ii. If the transfer hose fill adapter is equipped with a male QDV,
push the adapter poppet against an unpainted stainless steel
surface.
h. Wipe both reservoir and transfer line adapter fill connectors with lint free
rag to remove residual moisture.
NOTE: Purge the transfer line any time fill source valve has been closed.

i.

Using vent valve wrench, fully open reservoir vent valve.

j.

Connect transfer line to reservoir to begin fill.

k. While filling, throttle the vent valve with the vent valve wrench as neededto keep the reservoir pressure at approximately 1,2-1,7 bar (18-24 psig).
Monitor the pressure using one of the following techniques:i.

Monitor the internal pressure gauge if equipped.
-OR-ii.

For reservoirs that are not equipped with an internal pressuregauge, connect a pressure gauge to the oxygen outlet and open
the FCV to 2 LPM or greater.
-OR-iii.

l.

Attach a flowmeter to the oxygen outlet, set the FCV to 2 LPM, andthen throttle the vent valve to maintain a flow of 2 LPM. This isequivalent to using a pressure gauge.

When liquid spurts from the vent outlet, terminate the fill bydisconnecting the transfer line fill adapter from the reservoir.

m. Close reservoir vent valve immediately after disconnecting the transferline from the reservoir.
n. Disconnect the pressure gauge or flow meter (if used) from the oxygen
outlet and turn off flow control valve.
CAUTION: Do not allow excessive venting of liquid oxygen through the vent valve.
Prolonged exposure may freeze the vent valve in the open position.
o. Replace protective cover on the QDV adapter. Close the liquid valve on
the fill source and properly store the transfer line and fill adapter.

Ref 20925207 Rev B

Page 3 of 6

p. Verify that prescribed flow rate(s) is/are within tolerance specification(s)using an Erie liter meter and verify that the liquid level meter indicates
full.
NOTE: The liquid level indicating system is only accurate after the vent valve is closed,
and the oxygen has stabilized for five minutes.

Maintenance
Schedule A – Biennial
A. Introduction
Routine maintenance is a series of steps used to assure that equipment is functioning
properly.
1. If a unit fails a given test, one of two actions may be taken:a. Refer to the Troubleshooting section of the corresponding technical manual-ORb. Return the unit to CAIRE, Inc. for repair.
2. Schedule – maximum of two years between routine maintenance testing. Unit
should be tested whenever a problem is suspected.
B. Procedure
Follow the steps in order listed. If the unit fails any step, refer to Troubleshooting sectionof the corresponding technical manual.
NOTE: See the Troubleshooting and Repair section of the corresponding technicalmanual on the detailed procedures for the tests mentioned below.
1. Visual Inspection:
a. Remove any LOX prior to maintenance.
b. Look for damaged or missing parts.
c. Verify the meter reads empty. For reservoirs equipped with electroniclevel gauges, verify the low battery LED is not lit and no error codes
appear on the meter.
2. Component Test:
a. Remove shroud.

Ref 20925207 Rev B

Page 4 of 6

b. Perform Leak Test.
c. Perform PRV Test.
d. Perform SRV Test.
e. Pressure Retention Test.
f. Replace shroud.
g. Liquid Contents/Level Indicator Test. For Liberator reservoirs perform theliquid level indicator calibration for this step.
h. Flow Rate Test.
3. Check Efficiency of Unit:
a. Inspect unit for cold or sweaty condition and for excessive venting fromrelief valve (some venting is normal).
b. Perform NER test.
4. Prepare for Use:a. Empty contents.
b. Clean and/or disinfect outside of unit following instructions set forth in
the Operation section of the corresponding technical manual.
Schedule B – Continuous
A. Introduction
Continuous maintenance is a set of tests and inspections done periodically to ensure
equipment is functioning properly. It can be performed by drivers or other personnel
while the equipment is in service.
1. If a unit fails a given test, it should be taken out of service and sent to the Repair
Center/Department for further inspection.
2. Schedule - Scheduled intervals should be determined by the equipment service
provider.
B. Pre-Fill Procedure
1. Visually inspect for:a. Broken shroud or shroud components
b. QDV deformationc. Level indicator functionality

Ref 20925207 Rev B

Page 5 of 6

d. Presence of all required labels
e. Cryogenic reservoir damage (dents, dings)
f. If LOX is still present in the unit, inspect for heavy frost or condensation on
the exterior of the unit, which would indicate poor vacuum.
g. Visible dirt or contaminants inside and outside of the upper shroud, as
well as inside and outside of the condensate collector
h. Vent valve functionality (all parts are present and the valve functions asintended)
2. If refilling a partially filled reservoir, verify that prescribed flow rate(s) is/arewithin tolerance specification(s) using an Erie liter meter.
C. Post-Fill Procedure
1. Visually verify:
a. QDV poppet is closed and not leaking
b. Vent valve is not leakingc. No heavy frost or condensation is present on the exterior of the vessel ofthe reservoir
d. Liquid level indicator reads accurate amounte. Pressure gauge is reading accurate pressure (if equipped)
CONTACT:For technical questions or concerns, contact Technical Service:USA:
800-482-2473
www.cairemedical.com
Europe:+44 1344 403100
www.cairemedical.com
For ordering information or general inquires, contact Customer Service:USA:
800-482-2473
www.cairemedical.com
Europe:+44 1344 403100
www.cairemedical.com

Copyright © 2019 CAIRE Inc. CAIRE Inc. reserves the right to discontinue its products, or change theprices, 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.
Ref 20925207 Rev B

Page 6 of 6