Focus Portable
Oxygen Concentrator
Service ManualTM

MN171-1 REV C

Expedited Product Warranty Check service is available at 800-482-2473

MN171-1 REV C

Table of Contents
Section 1.0
Introduction
1.1
1.2
1.3
1.4
1.5

Equipment Provider Responsibility
Important Notice and Symbol Explanations
Definitions of Symbols
Focus Specifications
Focus Classifications

Section 2.0
Operation Check andTest of Oxygen Concentration
2.1
2.2

Description of Operation
Operation Check

Section 3.0
Operating Instructions
3.1

General Instructions
3.1.1 Connecting to Focus’s Power Inlet
3.1.2 Power Sources Available to Focus
3.1.3 Nasal Cannula
3.1.4 Battery Charging
3.1.4.1 Charging Focus Battery While Using the Power Supply with
Focus
3.1.4.2 Charging the Optional AirBelt™

Section 4.0
Alarm System
Table #1 - Alarm / Priority
4.1
Start-up
4.2
Battery Status
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4.3
4.4

Low Battery
Discharged Battery

4.5
4.6

Cannula Disconnect
Performance Warning
4.6.1 Focus Capacity Exceeded
4.6.2 General Malfunction

Section 5.0
Oxygen Concentration Test and Specification

Section 6.0
Routine Maintenance / Instructions to Patient
6.1

Alarm / Service Indicator

Section 7.0
Equipment Provider Maintenance
7.1
7.2
7.3
7.4
7.5

Equipment Provider Routine MaintenanceCompressor Servicing
Record Maintenance
Infection Control
Cleaning and Preparing for New Patient Use

Section 8.0
Service
Note: At this, all repairs must be performed at AirSep’s Service Department. If yourFocus requires service, contact your Customer Service representative to obtain an RGA
and instructions for return to AirSep.

Section 9.0
Troubleshooting
9.1

MN171-1 REV C

Troubleshooting Chart

1.0 Introduction
1.1

Equipment Provider Responsibility
All Equipment Providers of the Focus™ Portable Oxygen Concentrator
must assume responsibilities for handling, operational check-out, patient
instruction, and maintenance. These responsibilities are outlined below
and throughout this manual.

This unit is not to be used for life support. Geriatric, pediatric, or any other patients unable tocommunicate discomfort while using this unit may require additional monitoring. Patients withhearing and/or sight impairment(s) may need assistance with monitoring alarms.

As an Equipment Provider, you must do all of the following:

MN171-1 REV C■

Inspect the condition of each Focus unit immediately upondelivery to your business location. Note any sign of damage,external or internal, on the delivery receipt, and report it
directly to both the freight company and AirSep Corporation
immediately.

■

Check the operation of each Focus unit before delivery to apatient. Always operate the unit for a minimum of 10 minutes,
and check that the oxygen concentration level is within
specifications, as described in Section 5 of this manual.

■

Deliver Focus units only to patients authorized by a physician’sprescription. Focus must not be used as a life-supporting
device.

■Instruct patients how to use Focus in conjunction with thePatient Manual.

■

Instruct patients to notify their physicians and/or Equipment
Providers if they experience any signs of discomfort.

■

Be available to service each patient at any time.

■

Maintain Focus in accordance with Section 7.

■

Repair components and replace parts only as outlined in thismanual. Use only AirSep parts for replacement in Focus Oxygen
Concentrators.

1.2

Important Notice and Symbol Explanations

As you review both the Focus Patient Manual and this Focus Service Manual,
pay special attention to the WARNING, CAUTION, and NOTE messages. They
identify safety guidelines or other important information as follows:

Warning – Describes a hazard or unsafe
practice that if not avoided can result insevere bodily injury, death or property
damageCaution – Describes a hazard or unsafe
practice that if not avoided can result inminor bodily injury or property damage

Note – Provides information importantenough to emphasize or repeat

NO SMOKING signs should be prominently displayed in the home or wherever Focus is in use. Proper
information about the dangers of smoking in the presence of medical oxygen should be relayed.

MN171-1 REV C

1.3

Definitions of Symbols

Symbols are frequently used on equipment and/or the manual in preference to words with the intention of
decreasing the possibility of misunderstanding caused by language differences. Symbols can also permit easiercomprehension of a concept within a restricted space.
The following table is a list of symbols and definitions used with the Focus Portable Oxygen Concentrator.
SymbolDescription
ON (power switch on)

SymbolDescription
OFF (power switch off)

Warning – Describes a hazard or unsafe
practice that if not avoided can result insevere bodily injury, death or property
damageClass II Equipment, double insulated

Caution – Describes a hazard or unsafe

Safety agency for CAN/CSA C22.2 No.
601.1 M90 for medical electricalequipment

practice that if not avoided can result inminor bodily injury or property damage

Note – Provides information importantenough to emphasize or repeat

Keep unit and accessories dry

Consult the accompanying
documents

Proper disposal of waste of electrical andelectronic equipment required

Use no oil or grease

No smoking

Consult instructions for use

Type BF equipment

Do not expose to open flames

Oxygen outlet connection to thecannulaDo not block fan

Caution: Federal law (USA) restricts
this for sale or rental by or on the orderof a physician or licensed health careprovider.

MN171-1 REV C

Do not disassemble

1.4 Focus Specifications
Oxygen Concentration:*

90% oxygen - 3% / +5.5%

Dimensions:

6.4 in. high x 4.8 in. wide x 2.5 in. deep (16.4 cm high x 12.2 cm wide x 6.1 deep)

Weight:Concentrator 1.75 lb (0.8 kg)
Battery 0.53 lb (0.2 kg)
Optional AirBelt Battery 1.8 lb (0.8 kg)

Power:

Universal Power Supply:
AC Power Supply: Input # 1_100 – 240 VAC (1.5 Amps max at 120 VAC 50/60 Hz)
DC Power Supply: Input # 2_11-16 VDC 5.0 Amps max

Battery duration(Rechargeable
lithium Battery)

Battery: 1 ½ hours (per battery)
Optional AirBelt Battery: 4 hours

Battery recharge time:

4 hours; optional AirBelt: 3 ½ hours

Warm-up time:

2 minutes

Battery cycle life:

Approximately 300 cycles, then 80% capacity or below.

Audible alarms and pulse
visual indicators:

Start-up – audible and visual
Pulse flow – visual
Cannula disconnect- audible and visual
Breath rate alarm – audible and visual
General malfunction – audible and visual
Service required - visualLow battery - audible and visualBattery condition – battery level indicator on battery
Normal operating temperature: 41°F to 104°F (5°C to 40°C)
Storage temperature:-2°F to 140°F (-20°C to 60°C)

Temperature range:* Based on an atmospheric pressure of 14.7 psi (101 kPa) at 70°F (21°C)* Operating unit outside of normal operational temperature range can affect performance.

MN171-1 REV C

1.5 Focus Classifications
Type of protection against electric shock:Class II
Protection from electric shock is achieved by double insulation.
Degree of protection against electric shock:Type BF
Equipment providing a particular degree of protection against electric shock regarding1) allowable leakage current;
2) reliability of protective earth connection (if present).
Not intended for direct cardiac application.

Independent testing for Medical Electrical Equipment Standard:
Tested by QPS Testing Services NA Inc. to be in compliance with,IEC 60601-1 Medical Electrical Equipment – Part 1: General Requirements for Safety
2nd edition 1988, A1 1991, A2 1995.
Tested by QPS to be in compliance with applicable requirements of the Standard,
CAN/CSA C22.2 No. 601.1-M90 Medical Electrical Equipment – Part 1: General
Requirements for Safety, General instruction No. 1; Supplement No. 1; 1994
Amendment 2 – 1998 and General instruction No. 2 November 2003
Protection against potential electromagnetic or other interference between the equipment and other devices.
Tested by Ultratech Group of Labs to be in compliance with:
EN 60601-1-2:2007 (EMC) (2nd Edition), Medical Electrical Equipment, Part 1: General
Requirements for Safety-Collateral Standard: Electrical Compatibility - Requirements and Tests
RTCA-DO160F Airborne Equipment, Sec. 21, Emission of Radio Frequency Energy
CISPR 11:2009 +A1:2010 / EN 55011:2009, Class B Group 1, “Industrial, Scientific, and Medical(ISM) Equipment”
FCC Part 15, Subpart B – Class B Unintentional Radiators
Method of cleaning and infection control allowed:
Please refer to “Cleaning, Care, and Proper Maintenance” section of this Focus Patient
Manual.
Degree of safety of application in the presence of flammable anesthetic gases:
Equipment not suited for such application.
Mode of operation:
Continuous duty.

MN171-1 REV C

2.0

Operation Check and Test of Oxygen Concentration
2.1 Description of Operation
Air enters the Focus Oxygen Concentrator through an external air intake.
This air enters the compressor via a suction resonator that quiets the compressor’s suction sound.
The pressurized air then exits the compressor to a two-way solenoid feed valve that directs the air into
one of two sieve beds that contain molecular sieve. The unique property of molecular sieve enables it tophysically attract (adsorb) nitrogen when air passes through this material, thereby separating thenitrogen from the oxygen in ambient air.
There are two sieve beds: While one produces high-concentration oxygen, the other is purged of thenitrogen it adsorbed (collected) while it made oxygen. Oxygen exits the product tank after first passing
through the integrated product filter.
In addition to the molecular sieve beds that allow oxygen to be separated from air, Focus contains an
Oxygen Conserving Device (OCD) valve that controls delivery of high-concentration oxygen to thepatient at the point in the breathing cycle when the patient starts to inhale.
Focus delivers a gas consisting of 90% (+5.5%/-3%) oxygen at a pulse flow rate equivalent to 2 LPM(liters per minute) constant flow.

2.2

Operation Check

AirSep tests every Focus Oxygen Concentrator thoroughly after manufacture. You must perform thefollowing test to ensure that no damage occurred in shipping or handling.
1. Open and inspect all cartons upon delivery. Unpack the unit and remove
it from the carton. Inspect the unit itself for damage.
If the exterior of a unit’s carton is damaged, or if the unit itself is damaged,note this on the freight bill signed by the driver.
2. Connect the power supply or battery to the unit. Turn the Focus unit on by pressing thepower switch to the on position (l). Refer to Section 3 for operating instructions.
3. Check to see that the following sequence occurs:a. When Focus is turned on, [A one-second, audible alarm sounds to indicate start-up. The
green and red LED’s on the control panel will alternate on/off for (10) seconds. After the(10) second start up is complete the green LED will be illuminated indicating that the
Focus is ready to be used.]b. The compressor runs.
c. Exhaust air flows from the unit.
4.

MN171-1 REV C

Perform an oxygen concentration test, as described in Section 5.

3.0 Operating Instructions
3.1

General Instructions

It is important that patients thoroughly understand how to operate AirSep’s Focus unit.
This enables proper treatment as prescribed by a qualified, licensed physician. You must explainthat the purpose of this therapy is to alleviate symptoms. If patients experience any discomfort or if
the unit alarms, they must notify their Equipment Provider and/or physician immediately.
You, as the Equipment Provider, are responsible to ensure that each patient receives the Focus
Patient Manual. Explain each step in the operation of the unit to the patient with reference to the patientmanual.
Instruct patients that AirSep recommends that Focus should be used while sleeping only under the
direction of their clinician. In addition, some patients who tend to be mouth-breathers may benefit fromthe use of a chin strap.

3.1.1 Connecting to Focus’s Power Inlet
Locate the arrow marking at the top of the connector. Insert connector (Figure 1) into the Focus
power inlet (Figure 2) with the arrow on the side of the connector facing outward. Do not force
the connector into the power inlet, as it can be inserted only one way. This ensures that neither
the unit nor the power accessories are damaged.
Turn the Focus unit on by pressing the power switch to the on position (l).

Focus units
Power Inlet

Focus units
power
connector

Figure: 2
Figure: 1\

3.1.2 Power Sources available to Focus
3.1.2.1

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Focus operates from four different power sources.

NOTE: Always connect to the Focus power inlet first before connecting to a power
supply.
1) Connecting Focus to AC electrical power
When you are near an AC outlet, you may choose to operate Focus with the universal power
supply rather than the battery.Connect the cord on the power supply labeled as DC OUT To
Focus into the Focus unit’s power inlet,as shown in Figure 3. Do not force the plug, as it should
be inserted only one way. Plug the 3-prong AC cord from the power supply into any standard
outlet.
Turn the Focus unit on by pressing the power switch to the on position (l).

MN171-1 REV C

Focus unit’s Power Inlet

DC OUT to Focus
Figure: 32) Connecting Focus to a DC power source

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The universal power supply can also be used to operate the Focus unit from any 12-Volt DC
4power source.
For example: to an automobile, (boat, motor home, etc.) with a 12-Volt DC outlet.
Connect the power supply cord labeled DC OUT To Focus into the Focus unit’s power inlet, asshown in Figure 3. Place the DC accessory adapter on the end of the DC power cord.
Connect the other end into the power supply input connection labeled Accessory DC IN(see Figure 4).
You can then connect the DC power cord (with adapter attached) into the 12-Volt DC powersource. Do not force the cords, as they can be inserted only one way.
Turn the Focus unit on by pressing the power switch to the on position (l).
DC OUT to Focus
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DC accessory adapter

4
Connect to Focus

DC power cord
Accessory DC IN

Figure: 4

MN171-1 REV C

Fi3) Connecting Focus with the Battery, as shown:
Before using the battery, check that it has a sufficient charge.
The battery is equipped with a gauge (Figure 9) to indicate the level of battery charge (25100%). To check the level of charge of the battery, press the button on the battery’s keypad.
The battery gauge/indicator(s) LEDs to the left of the button illuminate to indicate the level ofbattery charge (25-100%). Connect the switch end of the battery cord into the Focus unit’s
power inlet only, as shown in Figures 5 and 6.Connect the other end into the battery. Do notforce the cords, as they can be properly inserted only one way.
Refer to the instructions on charging the battery in the Battery Charging section.

Focus units Power Inlet

Battery Gauge

Belt / Shoulder
Strap clip

Figure: 5

Figure: 6

Figure11
Figure 114) Connecting Focus with the Optional
AirBelt™ Battery

F

Check that the AirBelt is sufficiently charged. It requires approximately 3 ½ ighours to completely
charge. AirBelt (Figure 7) is equipped with a fuel gauge to indicate the level uof battery charger(25-100%). To check the level of charge, press the button on the AirBelt keypad.
The batteryegauge/indicator(s) illuminate to indicate the level of battery charge (25-100%). Connect the4interface cable (Figure 8) into the AirBelt, then plug the other end of the interface
cable into the
Focus, as shown in Figure 9. For proper orientation of the connector, see Connecting to the
Focus Power Inlet section. Turn the Focus unit on by pressing the power switch to the on
position (l).
Refer to the instructions on charging the battery in the Battery Charging section.

AirBelt
battery
charge level(25-100%

Figure: 7
AirBelt
battery

MN171-1 REV C

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Figure: 8
AirBelt to
Focus cord

Figure: 9
AirBelt
battery
with Focus
F
ig

AirBelt to4
Focus
connection

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3.1.3 Nasal Cannula
A nasal cannula with tubing are used to deliver oxygen from the Focus unit to the user.
The tubing is connected to the unit’s oxygen outlet (Figure 10).
Focus Power Inlet
Connect the Cannula to
Focus’s Oxygen Outlet

Figure: 10

AirSep recommends a nasal cannula with 7 ft (2.1 m) of tubing, AirSep Part No. CU002-1 or suitablecannula. Other lengths of non-kinking / star channel cannula can be used for a total length of up to 25 ft(7.6 m) maximum.
When Focus is operating but does not sense breathing for 15 minutes, a constant alarm sounds, and theamber alarm light illuminates simultaneously. If this occurs, check the connection from the cannula to
the Focus unit, make sure that the nasal cannula is positioned properly on your face, and ensure that you
are breathing through your nose. (Your physician may recommend the use of a chin strap if needed.) If
the alarm condition continues, change to another source of oxygen as available, and contact yourEquipment Provider.

Always follow the cannula manufacturer’s instructions for proper use. Consult your licensed health careprovider to determine how often the cannula should be replaced.

Cannula tubing must be non-kinking, which can be used for a total length of up to 25ft (7.6cm) maximum.

Ensure the cannula is fully inserted and secure. This ensures that the Focus unit can properly detect
inspiration for oxygen delivery.

MN171-1 REV C

3.1.4 Battery Charging
To check the level of charge of the battery, press the button on the battery’s keypad. The battery
gauge/indicator(s) illuminate to indicate the level of battery charge (25-100%).
3.1.4.1 To charge the Focus battery while using the power supply with Focus
1a) Using AC Power: Follow the instructions in the Connecting Focus to AC electrical power
section.
1b) Using DC Power: Follow the instructions in the Connecting Focus with the Battery section.
2) Connect the battery cord without the on / off switch into the power supply outlet marked DC
OUT To Battery. Connect the other end to the battery.
Note: The battery is charging whenever the unit operates on AC or DC power.
 The Focus battery will completely recharge from its fully depleted state inapproximately four hours, whether or not the unit is in use on AC or DC power.
 While charging a fully discharged battery, the LED will continue to blink until 25%
capacity is reached. The LED will then turn solid.
 Each of the four LEDs, 25% -100%, will blink as stated above, then turn solid when
they reach their capacity.
 When all LEDs illuminate solid, the battery is fully charged and the LEDs will remain
solid for a period of time, then all four LEDs will turn off.
 Wherever storing Focus battery for an extended period of time, ensure that the battery state ofcharge (SOC) is not depleted or stored at 100%. Both these conditions can result in
unrecoverable capacity loss. The recommended SOC is 25% to 50% for long-term storage.
The recommended storage temperature is 23oC +/- 2oC.

The Battery can be recharged from the power
supply while using Focus AC or DC power.

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Figure: 11

3.1.4.2 Charging the Optional AirBelt
MN171-1 REV C

To charge the AirBelt battery:
1) Release safetycap from end of the AirBelt cord.
2) Connect the AC/DC power supply (included with the AirBelt Accessory kit) to the end of
AirBelts power cord as shown in Figure 12.
3) Connect the AirBelt power supply to an AC electrical outlet to recharge.

AirBelt

PW009-2
AC/DC Power
Connecting the AirBelt cord to the power supply cord
SupplyAC/DC Power Supply
PW009-2 AC/DC Power Supply

Figure 12: AirBelt Battery Charging set up
PW009-2 AC/DC Power Supply

Replace safety cap on AirBelt cord when not in use.
Fig
Do not attempt to charge the optional AirBelt with the Focus power supply or the AirBelt
can beudamaged. Use only the AirBelt power supply provided to charge AirBelt.
r
e






4

The Focus AirBelt will completely recharge from its fully depleted state in approximately 3 ½ hours.
While charging a fully discharged battery, the LED will continue to blink until 25% capacity is reached. The LED
will then turn solid.
Each of the four LEDs, 25% -100%, will blink as stated above, then turn solid when the battery reaches it’scapacity.
When all LEDs illuminate solid, the battery is fully charged and the LEDs will remain solid for a period of time, then
all four LEDs will turn off.
The incorrect use of AirBelt can cause it to get hot, ignite, and may cause serious injury. Be sure not topierce, strike, step on, or drop the battery, or otherwise subject the battery to strong impacts or shocks.

Do not store Focus or AirBelt in a very hot automobile or in other similar, high- or low-temperatureenvironments. Operating or storing the AirBelt outside the normal temperature range can affect its
performance. (Refer to the Specifications section in this manual.)

Storing your AirBelt for extended periods of time at high temperatures or with a fully charged orcompletely discharged battery can degrade its overall battery life.

MN171-1 REV C

Depending upon the temperature of the Focus battery, it can take several minutes for the charging cycle
to start after connecting to power. This is a normal condition and is intended for safe charging.

AirBelt does not need to be fully discharged before recharging. It is recommended to charge it after eachuse.

If the AirBelt power supply remains connected when it is fully charged, the four LEDs will turn off within ½
hour.

4.0

Alarm System
An audible alarm sounds simultaneously with a visual alarm if the Focus units battery is
low, senses no inspiration, or if performance is outside specifications. If an alarm sounds
observe which lights are on. The visual and audible alarm conditions are explained indetail below.
ALARM /PRIORITY

VISUALAUDIBLE (Buzzer)

1.)High Temperature(Red) 3 - half second flashes anda 5 second pause

2.) Battery Warning(Amber) 1 – half second flash
and a 5 second pause

Battery Shutdown(Amber) 2 – half second flash
and a 5 second pause

3 half second beeps and a 5
second pause(beep, beep, beep)
1 – half second beep and a 5
second pause(beep)
2 – half second beeps and a 5
second pause(beep, beep)
Continuous beep
2 – half second beeps and a 5
second pause(beep, beep)
3 half second beeps and a 5
second pause(beep, beep, beep)
No beep3.) No Inspiration
4.) Malfunction(Amber) Solid
Red) 2 – half second flashes anda 5 second pause

5.) Breath rate
exceeded(Amber) 3 - half second flashes
and a 5 second pause

6.) Service Alarm(Amber) Solid

Table # 1 Alarm / Priority

MN171-1 REV C

4.1

Start-Up
A one-second, audible alarm sounds to indicate start-up. The green and red LED’s on the control
panel will alternate on/off for (10) seconds. During this (10) seconds both feed and waste valves
are open. After the (10) second start up is complete the green LED will be illuminated indicatingthat the Focus is ready to be used.

4.2

Battery Status
To check the level of charge of the battery, press the button on
Focus battery keypad. The battery gauge / indicator(s) LEDs next
the button illuminate from 25-100% to indicate the level (capacity)of the internal battery. At less than 25% capacity, the 25% LED blinks.

4.3

Low Battery
Focus unit indicators: As the battery power approaches a low level, the amber light on the
Focus unit will flash on for ½ second with a 5-second pause and simultaneously, a ½ second
alarm sounds with a 5-second pause. Following the battery warning indicators, if action is nottaken, the unit will shut down. This will be indicated when the amber light flashes 2 times with a
5-second pause and simultaneously, a ½ second alarm sounds 2 times with a 5 second pause.
Battery indicator: The green light indicator on the battery gauge light flashes.
When this occurs, the patient is instructed to, connect Focus to a DC power outlet or to an AC
power outlet, or change to another source of oxygen immediately. The level of battery charge isindicated by the battery gauge/indicator(s). You can also check the SOC (state of charge) at any
time by depressing the button.
When the unit is connected to AC or DC power outlet, you may simultaneously charge the Focus
battery supplied with the unit while running the unit

4.4

4.5

Discharged BatteryBattery shutdown indicator on Focus control panel: When the battery is fully discharged, theunit shuts down. Before this occurs the amber light flashes 2 times with a 5-second pause andsimultaneously, a ½ second alarm sounds 2 times with a 5 second pause.

Battery indicator: The green light indicator on the battery gauge light flashes.
When this occurs, the patient is instructed to, connect Focus to a DC power outlet or to an
AC power outlet, or change to another source of oxygen immediately. The level ofbattery charge is indicated by the battery gauge/indicator(s). You can also check the SOC(state of charge) at any time by depressing the button.
When the unit is connected to AC or DC power outlet, you may simultaneously charge
the Focus battery supplied with the unit while running the unit

Cannula Disconnect (No inspiration detected)
When Focus is operating but does not sense breathing for 15 consecutive minutes, a constantalarm sounds, and the amber alarm light illuminates simultaneously. If this occurs, check theconnection from the cannula to the Focus unit, make sure that the nasal cannula is positioned
properly on your face, and ensure that you are breathing through your nose. (Your physician may
recommend the use of a chin strap if needed.) If the alarm condition continues, change to anothersource of oxygen as available, and contact your Equipment Provider

MN171-1 REV C

4.6

Performance Warning
The performance of Focus can be affected by two conditions.
1) If the user’s breathing rate causes the Focus unit’s capacity
to be exceeded.
2) The second condition that can result in decreased performance is a
general malfunction (i.e. High temperature, High or Low pressure).

4.6.1 Focus Capacity Exceeded
When the patient’s breathing rate has caused the capacity of Focus to be exceeded, an alarmsounds 3 times every ½ second with a 5 second pause, and the amber alarm light illuminates
simultaneously (See Table 1).
When this occurs, the concentration of oxygen that Focus is supplying is outside of the unit
specifications. The patient is advised to reduce any physical activity, reset alarm by turning unit
off and back on, and then if necessary change to another source of oxygen as available, andcontact your Equipment Provider

4.6.2 General Malfunction
If Focus has a general malfunction, an audible alarm sounds and the red alarm light illuminates(See Table 1).
If this alarm condition occurs, the patient is advised to change to another source of oxygen as
available, and contact your Equipment Provider

5.0

Oxygen Concentration Test and Specification
To ensure that Focus’s oxygen output is within specification, you must
perform an oxygen concentration test. Test the unit upon delivery to apatient and at periodic intervals. Equipment Providers, based upon theirown expertise and documentation, may establish and implement their own
protocol to check oxygen concentration. The interval established may belonger or shorter than 90 days, AirSep’s default time period for providers
who do not choose to establish their own protocol.

5.1. Connect the Focus Oxygen Concentrator to an AirSep-supplied AC power supply (AirSep Part
No. PW019-1).

5.2. To activate the unit’s test mode:
5.2.1 Focus unit off before 4 seconds expires.
5.2.2 Turn the unit on and then off again during the 10 second start up sequence. The user has amaximum of 6 seconds to complete this task.
5.2.3 Repeat step 5.2.2

5.3.

MN171-1 REV C

5.2.4 Turn the unit on and let it remain on.
Verify Focus is pulsing by observing the intermittent green LED.
When the unit pulses, you should be able to hear the pulse of oxygen and see the LED turn off
momentarily. Allow Focus to run for 5 minutes before recording the oxygen concentration of theunit.

5.4. With a short length of tubing 12 in. (30 cm), connect a calibrated
Teledyne Analytical Instruments oxygen analyzer (Model AX-300)
or Fujikura Oxygen Analyzer (Model FCX-HOM or FCX-OM3).
to the oxygen outlet on the Focus concentrator. Turn on theanalyzer and record the unit’s concentration. The concentration
specification in test mode is 87% or greater.

6.0

Routine Maintenance Instruction for Patient
To ensure accurate output and efficient operation of the unit, the patient must contact theEquipment Provider for inspection/service when the alarm/service indicator illuminates.

6.1

Alarm/Service Indicator
The Focus unit should be serviced after every 5,000 hours of use. This should include replacing
the compressor felt filter, a check of oxygen concentration, etc. When the unit has reached 5,000
hours of use, an amber LED will illuminate on the right side of the unit’s control panel. Instructpatients to notify the Equipment Provider when this happens.
If the oxygen concentration of the unit is below 87%, the system’s operating pressure shouldbe measured to verify the compressor is functioning within specification. If the system pressure
is below 19 psig (131 kPa), make sure that the unit is leak-free by testing all tubing connections
and fittings with leak-testing solution. If no leaks are present, replace the compressor.

AirSep does not recommend the sterilization of this equipment.

7.0 Equipment Provider Maintenance
7.1 Equipment Provider Routine Maintenance
The Focus unit includes one filter and a compressor that require scheduled maintenanceor replacement.
To ensure that the output of oxygen is within specification, you must perform an oxygen
concentration test. (Refer to Section 5, “Oxygen Concentration Test and Specification,” of thismanual.) Test the unit upon delivery to a patient and at periodic intervals. Equipment
Providers, based on their expertise and documentation, may establish and implement their own
protocol to check oxygen concentration. The interval established may be longer or shorter than
90 days, AirSep’s default time period for providers who do not choose to establish theirown protocol.

7.2 Compressor Servicing
As the Equipment Provider, you are responsible for monitoring the life of the compressor, whichmust be checked at every 5,000 hours of use.

7.3 Recording MaintenanceAs the Equipment Provider, you should record all routine maintenance and repairs performed on
the Focus unit, including hours and dates ofservice. MN171REV C B

7.4 Infection Control
With growing concern about possible cross infection from home oxygen equipment from one
home care patient to another, a clarification on this topic is necessary. The organisms of mostconcern are M.Tuberculosis, HIV, and Viral Hepatitis. These are potentially pathogenic.
Tuberculosis can survive outside the human body, but its mode of transmission is by droplet
nuclei. When infected individuals cough, they release droplet nuclei into the air, and these carry
the Tuberculosis organism. These droplet nuclei may be breathed in by another person, but
prolonged exposure to the infected person is usually necessary for infection to occur.
HIV and Viral Hepatitis are both viruses that are not living cells themselves but can duplicate
when in a living “host” cell. Both of these organisms are usually passed on by person-toperson contact, and both need to be in the human body to survive. Once outside the body, viruses
do not survive.

7.5

Cleaning and Preparing for New Patient Use
When you remove Focus from a patient’s home, always detach and dispose of the used nasal
cannula. Clean the exterior of Focus with a mild household cleaner applied with a damp cloth orsponge. Pay special attention to the oxygen outlet for the cannula connection to make sure it
remains free of dust, water, and particles. Be careful not to get any liquid into the interior of theunit.
Next, clean the exterior with a common chemical disinfectant before any other patient uses theunit. Do not use liquid directly on the Focus unit to clean it.
Do not use liquid directly on the Focus unit to clean it. A list of undesirable chemical agentsincludes but is not limited to, the following, according to the plastics manufacturer: alcohol andalcohol-based products, concentrated chlorine-based products (ethylene chloride), and oil-based
products (Pine-Sol, Lestoil). These are NOT to be used to clean the plastic housing on Focus,
they can damage the units plastic.

Allow Focus to air dry, and then re-test oxygen concentration before you
return the unit to your inventory.
_______________________________________________________________*Make the bleach solution a 1:100 dilution of 5.25% sodium hypochlorite.
Mix one part household bleach (e.g., Clorox with 99 parts cold tap
water) to measure the solution easily, take ¼ cup of household bleach,and mix it with a gallon of cold tap water. Allow the mixture to sit on
potentially contaminated surfaces for 10 minutes.

AirSep does not recommend the sterilization of this equipment.

MN171-1 REV C

8.0 Service
8.1

Note: At this, all repairs must be performed at AirSep’s Service Department. If
your Focus requires service, contact your Customer Service representative toobtain an RGA and instructions for return to AirSep.

9.0 Troubleshooting
Problem
Unit does not turn on,
and AC power supply isproperly connected to a walloutlet.

Unit does not turn on, and DC
power supply is properly
connected to an automobile,
RV, accessory outlet.

General malfunction; alarm isactivated.

Battery duration is less thanper specification.

Possible Cause

Solution

Wall switch power is off.

Turn on wall or outlet switch.

No power to unit.

Reset household circuit
breaker.

Unit temperature has exceeded
battery operating temperature 5 to
40oC.

Allow unit to cool before
starting.

AC power supply is not properly
connected to Focus.

Check connection from theAC adapter to Focus.

Defective AC power supply.
No power at DC outlet

Replace AC adapter.
Check fuse for DC outlet.

DC power supply is not connectedto accessory outlet or not connected
to Focus.

Connect DC power supply tooutlet of automobile after
ignition is started.

Defective DC power supply

Replace power supply.

Unknown
Unit overheats and will shut down.
Check air inlet and exhaust vents for
obstruction.

Return to AirSep.
Clear obstruction at air inlet
and exhaust.

Unknown

Return To AirSep

Battery not fully charged.

Ensure that battery charges
for at least 3-1/2 hours and all(4) LEDs are lit solid.

Battery has been stored in adischarged or 100% charged statefor prolonged period of time orstored in a very high temperatureenvironment.

Replace battery.

Battery reached cycle life.

Replace Battery.

Battery temperature has exceeded
battery operating temperature 5 to
40oC.

Allow battery to cool before
starting.

Focus is not turned on.

Turn Focus on.

Battery is depleted

Replace battery.

Unit does not start on battery.

MN171-1 REV C

ProblemBattery does not charge.

Oxygen concentration is below
specifications in test mode.
Unit does not deliver oxygen.

MN171-1 REV C

Possible Cause

Solution

Battery temperature has exceeded
battery operating temperature 5 to
40oC.

Allow battery to cool before
charging.

Battery is defective.

Replace battery

AC adapter connector is defective orcontact pin is bent.

Replace battery

Defective AC adapter
Unknown

Replace AC adapter.
Return to AirSep.

Cannula kinked or not properly
connected.

Check cannula and thecannula connection.

Unknown

Return to AirSep.

CAIRE Inc.
2200 Airport Industrial Dr., Ste 500
Ball Ground, GA 30107
www.chartindustries.com/RespiratoryHealthcare

CAIRE 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.

MN171-1 REV C