FreeStyle Service Manual Rev B July 2012

Expedited Product Warranty Check service is always at your fingertips with AirSep: Type www.airsep.info/warranty_check/main.asp OR In the US or Canada, dial 866-873-9277

Air Travel with FreeStyle FreeStyle is approved for use on-board commercial aircraft per an addendum to FAA SFAR 106. For a current list of airlines that allow the FreeStyle POC for in-flight use by patient/ passengers with a valid medical prescription upon notifying the airline’s oxygen desk, visit the following on AirSep web site at the link below: http://www.airsep.com/medical/AirLinePOCs.html

AirSep® is a registered trademark of AirSep Corporation. 

FreeStyle™ is a trademark of AirSep Corporation.

MN126-1

Rev. B 07/12

Table of Contents Section 1.0 Introduction 1.1

Equipment Provider Responsibility

1-1

1.2

Important Notice and Symbol Explanations

1-2

1.3

Definitions of Symbols

1-3

1.4

FreeStyle Product Limited Warranty

1-4

1.5

FreeStyle Specifications

1-5

1.6

FreeStyle Classifications

1-6

2.1

Description of Operation

2-1

2.2

Operation Check

2-1

2.3

Alarm System

2-2

2.3.1

Start-up

2-2

2.3.2

Battery Status

2-2

2.3.3

Low Battery

2-2

2.3.4

Discharged Battery

2-2

2.3.5

Battery Charging

2-3

2.3.6

Battery Fully Charged

2-4

2.3.7

Cannula Disconnect

2-4

2.3.8

Performance Warning

2-4

2.3.9

FreeStyle Capacity Exceeded

2-4

2.3.10

General Malfunction

2-4

Section 2.0 Operation Check and Test of Oxygen Concentration

2.4

Oxygen Concentration Test and Specification

2-5

3.1

General Instructions

3-1

3.1.1 Connecting t o E x t e r n a l Power

3-1

3.1.2 Optional AirBelt Battery

3-1

Routine Maintenance by the Patient

3-4

Section 3.0 Patient Instructions

3.2 AirSep Corporation

i – table of contents

3.2.1

Cleaning the Air Intake Gross Particle Filter

3-4

3.2.2

Alarm/Service Indicator

3-5

3.2.3

Nasal Cannula

3-5

3.2.4

Usage During Sleep

3-5

Section 4.0 Equipment Provider Maintenance 4.1

No Scheduled Maintenance

4-1

4.1.1

Air Intake / Gross Particle Filter

4-1

4.1.2

Product Filter Replacement

4-1

4.1.3

Compressor Servicing

4-2

4.1.4

Recording Maintenance

4-2

4.2

Infection Control

4-2

4.3

Cleaning and Preparing for New Patient Use

4-2

5.1

Components

5-1

5.2

Housing Removal

5-2

5.2.1

Removing Front Cover

5-2

5.2.2

Removing Back Cover

5-2

Section 5.0 Service

5.3

Internal Battery Replacement

5-3

5.4

PSA Removal

5-4

5.5

Compressor Replacement

5-10

5.5.1

Compressor Assembly Removal

5-10

5.5.2

Compressor Assembly Installation

5-12

5.6

Product Manifold Replacement

5-13

5.7

Solenoid Valve Replacement

5-14

5.8

Adsorbent Bed Replacement

5-15

5.9

Feed/Waste Manifold Replacement

5-17

5.10

Measuring System Pressure

5-18

5.11

Hour Meter Functionality

5-19

5.11.1

Icons

5-19

5.11.2

Power

5-19

5.11.3

Service LED

5-19

5.11.4

Toggle/Reset Switch

5-20

5.12 ii – table of contents

Hour Meter Replacement

5-20 AirSep Corporation

5.13

Circuit Board Replacement

5-21

5.14

Motor Controller Board Replacement

5-25

5.15

Control/Key Panel Replacement

5-27

5.16

Fan Replacement

5-31

6.1

Pressure Profile Quadrant

6-1

7.1

General Troubleshooting

7-1

7.2

Troubleshooting Chart

7-2

8.1

Tools for FreeStyle Service and Maintenance

8-1

Section 6.0 Typical Pressure Profiles

Section 7.0 Troubleshooting

Section 8.0 Recommended Tools

Appendix Exploded Drawings

iii – table of contents

Figure 1: FreeStyle - Internal Front View

A-1

Figure 2: FreeStyle - Internal Rear View

A-2

Figure 3: FreeStyle - PSA Assembly - Product Manifold

A-3

Figure 4: FreeStyle - PSA Assembly - Feed/Waste Manifold

A-4

AirSep Corporation

1.0

Introduction 1.1

Equipment Provider Responsibility All Equipment Providers of the FreeStyle™ 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 to communicate discomfort while using this unit may require additional monitoring. Patients with hearing and/or sight impairment(s) may need assistance with monitoring alarms.

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

Inspect the condition of each FreeStyle unit immediately upon delivery 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 FreeStyle unit before delivery to a patient. 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 FreeStyle units only to patients authorized by a physician’s prescription. FreeStyle must not be used as a life-supporting device.

■

Instruct patients how to use FreeStyle in conjunction with the Patient Manual.

■

Instruct patients to notify their physicians and/or Equipment Providers if they experience any signs of discomfort. Instruct each patient to perform routine maintenance of the air intake gross Filter. (Refer to Section 3.2.)

■ ■

Be available to service each patient at any time.

■

Maintain FreeStyle in accordance with Section 4.0.

■

Repair components and replace parts only as outlined in this manual. Use only AirSep parts for replacement in FreeStyle Oxygen Concentrators.

■

Refer to the “FreeStyle Product Limited Warranty”, Section 1.4 of this manual, if replacement of parts is required within the warranty period.

AirSep Corp. - FreeStyle Service Manual

1-1

1.2

Important Notice and Symbol Explanations

As you review both the FreeStyle Patient Manual and this FreeStyle 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 in severe bodily injury, death or property damage

Caution – Describes a hazard or unsafe practice that if not avoided can result in minor bodily injury or property damage

Note – Provides information important enough to emphasize or repeat

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 PROVIDER BEFORE ATTEMPTING TO USE THIS EQUIPMENT; OTHERWISE, INJURY OR DAMAGE MAY RESULT.

Smoking while using oxygen is the number one cause of fire injuries and related deaths. You must follow these safety warnings: Do not allow smoking, candles, or open flames in the same room with the device or within 5 feet (1.52 meters) of the oxygen-carrying accessories. Smoking while wearing an oxygen cannula may cause facial burns and possibly death. Removing the cannula and putting it on bedding, sofas, or other cushion material will cause a flash fire when exposed to a cigarette, heat source, or flame. If you smoke, these 3 steps may save your life: turn off the oxygen concentrator, take off the cannula, and leave the room where this device is located.

“No Smoking – Oxygen in Use” signs must be prominently displayed in the home, or where the oxygen concentrator is in use. Patients and their caregivers must be informed about the dangers of smoking in the presence of, or while using, medical oxygen.

1-2

AirSep Corp. - FreeStyle Service Manual

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 easier comprehension of a concept within a restricted space. The following table is a list of symbols and definitions used with the FreeStyle Portable Oxygen Concentrator. Symbol

Description ON (power switch on)

Warning – Describes a hazard or unsafe

Symbol

Description OFF (power switch off)

practice that if not avoided can result in severe bodily injury, death or property damage

Class II Equipment, double insulated

Caution – Describes a hazard or unsafe

Complies with the 93/42/EEC directive drawn up by the approved organization No. 0459

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

Note – Provides information important enough to emphasize or repeat

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

Consult the accompanying documents

Keep unit and accessories dry

Use no oil or grease

Proper disposal of waste of electrical and electronic equipment required

No smoking

Do not disassemble

Type BF equipment

Consult instructions for use

Oxygen outlet connection to the cannula

Do not expose to open flames

Caution: Federal law (USA) restricts this for sale or rental by or on the order of a physician or licensed health care provider.

Do not block fan

RTCA DO160 Section 21 Category M Compliant. FAA SFAR 106 requirement

AirSep Corp. - FreeStyle Service Manual

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

1-3

1.4 FreeStyle Product Limited Warranty AirSep Corporation warrants the FreeStyle Oxygen Concentrator to be free from defect in parts for three years (as specified on the original invoice provided) from the date of delivery to the original purchaser, under normal use and operation. The battery is warranted for one year. AirSep Corporation’s obligations under this warranty are limited to the repair or replacement of any such item of equipment (or part thereof) shown to be defective or, at AirSep Corporation’s option, to refund the purchase price of any such defective item of equipment. Each item of equipment for which a warranty claim is asserted shall, at the request of AirSep Corporation, be returned on a prepaid basis with proof of purchase date to the AirSep factory at the expense of the purchaser. The purchaser will be responsible for return freight charges. Replacement parts shall be warranted as stated above for the unexpired portion of the original three-year parts warranty (as specified on the original invoice provided). This warranty does not extend to any item or part subjected to misuse, accident, improper maintenance, or application, or which has been repaired or altered outside of the AirSep Corporation factory without the express prior written authorization of AirSep Corporation. THE FOREGOING WARRANTY IS IN LIEU OF ANY OTHER WARRANTY, EXPRESSED OR IMPLIED, IN FACT OR IN LAW, INCLUDING WITHOUT LIMITATION THE WARRANTY OF MERCHANTABILITY OR THE WARRANTY OF FITNESS FOR PARTICULAR PURPOSE. IT IS EXPRESSLY UNDERSTOOD THAT PURCHASER’S SOLE AND EXCLUSIVE REMEDY FOR DEFECT IN PARTS IS LIMITED TO ENFORCEMENT OF AIRSEP CORPORATION’S OBLIGATION AS SET FORTH ABOVE, AND AIRSEP CORPORATION SHALL NOT BE LIABLE TO PURCHASER OR OTHERS FOR LOSS OF USE OF THE EQUIPMENT OR FOR OTHER SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES.

1-4

AirSep Corp. - FreeStyle Service Manual

1.5

FreeStyle Specifications Oxygen Concentration:*

1-3 pulse settings; equivalent to a continuous flow of 90% +5.5/-3% Oxygen Concentration

Dimensions:

8.6 in. high x 6.1 in. wide x 3.6 in. deep (21.8 cm high x 15.5 cm wide x 9.1 cm deep)

Weight:

4.4 lb (2.0 kg); 1.8 lb (.8 kg) optional Airbelt

AC Power Supply: 100 – 240 VAC (1.0 amp at 120 VAC) Universal Power Supply: DC Power Supply: 11-16 VDC (6.0 amps max. at 13.5 VDC nominal) FreeStyle unit: 28 W nominal at 3 setting Battery duration:

3 setting - 2 hours; 2 setting - 2.5 hours; 1 setting - 3.5 hours Optional AirBelt when combined with the internal battery: 3 setting - 5 hours; 2 setting - 6 hours; 1 setting -10 hours

Battery charge time:

3.5 hours; optional AirBelt: 3 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 (GREEN indicator light); Pulse flow – visual (GREEN light); Battery condition – battery level (GREEN indicator lights); Cannula disconnect- audible and visual (RED alarm light); System overdraw – audible and visual (RED warning and alarm lights); High and low pressure – audible and visual (RED alarm light); Service required: visual (YELLOW alarm light)

Sound:

38 dBA at 1 Setting: 41 dBA at 2 setting: 44 dBA at 3 setting

Temperature range intended for use:

Operational temperature: 41oF to 104oF (5oC to 40oC) Storage temperature: -4oF to 140oF (-20oC to 60oC)

Max Operational Altitude:

up to 12,000 ft (3,657.6 m) (483mmHg) Higher altitudes may affect performance

* Based on an atmospheric pressure of 14.7 psia (101 kPa) at 70oF (21oC) * Operating unit outside of normal operational temperature range can affect performance.

AirSep Corp. - FreeStyle Service Manual

1-5

1.6

FreeStyle Classifications

Classification 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 regarding 1) 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 to be in compliance with: IEC 60601-1 Medical Electrical Equipment – Part 1: General Requirements for Safety Tested 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

Protection against potential electromagnetic or other interference between the equipment and other devices: Device with accessories tested to be in compliance with EN 60601-1-2 Medical Electrical Equipment, Part 1: General Requirements for Safety-Collateral Standard: Electrical Compatibility - Requirements and Tests RTCA / DO160 Airborne Equipment, Sec. 21, Emission of Radio Frequency Energy CISPR 11 / EN 55011, 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 the “Cleaning, Care, and Proper Maintenance” section of this FreeStyle Service Manual. Degree of safety of application in the presence of flammable anesthetic gases: Equipment not suitable for such application. Mode of operation: Continuous duty.

1-6

AirSep Corp. - FreeStyle Service Manual

2.0

Operation Check and Test of Oxygen Concentration 2.1 Description of Operation Air enters the FreeStyle Oxygen Concentrator through an external air intake / gross particle filter. This filtered air enters the compressor via a suction intake muffler that quiets the compressor’s suction sound. Pressurized air then exits the compressor and passes through a heat exchanger to reduce the temperature. Next, a two-way solenoid feed valve directs the air into one of two sieve beds that contain molecular sieve. The unique property of molecular sieve enables it to physically attract (adsorb) nitrogen when air passes through this material, thereby separating the nitrogen from the oxygen in ambient air. There are two sieve beds: While one produces high-concentration oxygen, the other is purged of the nitrogen 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, FreeStyle contains an Oxygen Conserving Device (OCD) valve that controls delivery of high-concentration oxygen to the patient at the point in the breathing cycle when the patient starts to inhale. FreeStyle delivers a gas consisting of 90% (+5.5/-3% )oxygen at pulse flow rates from approximately 1–3 LPM equivalency.

2.2 Operation Check AirSep tests every FreeStyle Oxygen Concentrator thoroughly after manufacture. You must perform the following test to ensure that no damage occurred in shipping or handling.

1. Connect the power cord of the unit, and turn the unit on by pressing flow setting [-2]. Check to see that the following sequence occurs: a. A brief, continuous alarm sounds to indicate that FreeStyle has been turned on. b. The compressor runs. c. After a 10 second start up is complete. d. Exhaust air flows from the unit. 2.

Perform an oxygen concentration test, as described in Section 2.4.

AirSep Corp. - FreeStyle Service Manual

2-1

2.3

Alarm System An audible alarm sounds if FreeStyle has a low battery, 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 in detail below.

2.3.1

Start-Up A one-second, audible alarm sounds to indicate start-up. FreeStyle begins to operate when the alarm stops.

2.3.2

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

2.3.3

Low Battery As the battery power approaches a low level, a ½ second beep is emitted every five seconds, and a yellow LED on the battery gauge / indicator(s) will blink for a ½-second every five seconds. When this occurs, the patient is instructed to connect the FreeStyle Universal AC or/ DC power supply or change to another source of oxygen. The low battery alarm will continue for approximately 2 minutes before FreeStyle stops operating.

2.3.4

Discharged Battery When the battery is discharged, the unit shuts down. Before this occurs, a ½ second beep sounds every ½ second and the yellow battery LED blinks at the same rate until any one of the 1-3 settings on the keypad are pressed. After the alarm is turned off, connect the FreeStyle unit to its Universal AC or / DC power supply or change to another source of oxygen immediately. When the FreeStyle unit is connected to the Universal AC or / DC power supply, FreeStyle operates and the internal battery recharges simultaneously.

2-2 22

2

AirSep Corp. - FreeStyle Service Manual

2.3.5

Battery Charging

To check the level of charge of the battery, press the BATT button on the keypad. The battery gauge/indicator(s) illuminate to indicate the level of battery charge (25-100%). To charge the FreeStyle’s internal battery:  Connect its Universal AC or / DC (auto) power supply into the unit’s power receptacle located on the right side of the FreeStyle unit, and the other end to its proper AC or DC power outlet.  The FreeStyle internal battery will completely charge from a fully depleted state in approximately 3½ hours. Depending upon the temperature of the FreeStyle 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.

 While charging a fully discharged battery, initially the 25% LED will start blinking rapidly for a few minutes, then start to blink at a slower rate (½ second). 

 The LED will continue to blink until a 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.



 Once all LEDs illuminate solid, the battery is fully charged and the LEDs will remain on solid for approximately 1 ½ hours, then all four LEDs will turn off.

 If the Universal AC / DC power supply is not connected, the LEDs will turn of within 5 seconds. The lithium ion rechargeable battery that is used in the FreeStyle unit does not need to be fully depleted before recharging. It is recommended to charge the battery regardless of the battery’s capacity level after use. The battery will charge when the unit is off as well as while the unit is running off the AC or DC power supply.

Lithium batteries may permanently lose capacity when exposed to extremely hot temperatures with the batteries fully charged or completely depleted. For extended storage, it is recommended that batteries be charged 25 to 50% and remain within a temperature range of 73 F (23 C).

AirSep Corp. - FreeStyle Service Manual

2-3

2.3.6

Battery Fully Charged

When FreeStyle is connected to an AC or DC outlet and is either in operation or is off, the green 100% battery gauge/indicators displays to indicate that the battery is fully charged.

2.3.7

Cannula Disconnect (No inspiration detected)

When FreeStyle is operating and does not sense breathing within 15 minutes, a red light will illuminate with a constant audible alarm. If this occurs, the patient should be instructed to check the connection from the cannula to the FreeStyle unit, make sure that the nasal cannula is positioned properly on the 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 continues to sound,the patient should change to an alternate source of oxygen and contact the Equipment Provider.

2.3.8

Performance Warning

If the user’s breathing rate causes the Freestyle unit’s capacity to be exceeded. The amount of oxygen that FreeStyle supplies is dependent on the flow control switch setting and the breathing rate. If the breathing rate is too fast for the flow selector setting, the capacity of FreeStyle can be exceeded. The patient should reduce activity or consider locating another source of oxygen.

2.3.9

FreeStyle Capacity Exceeded

When the patient’s breathing rate has caused the capacity of FreeStyle to be exceeded, a 1/2-second alarm sounds every 1/2 second, and the red alarm/ service light flashes. When this occurs, oxygen concentration is outside specifications. The patient should reduce activity or change to another source of oxygen and contact the Equipment Provider.

2.3.10 General Malfunction If a general malfunction of the FreeStyle unit occurs, a 1/2 second alarm sounds every 1/2 second, and the red ALARM light turns on. When this occurs, oxygen concentration is outside specifications. The patient should change to another source of oxygen and contact the Equipment Provider.

2-4 22

2

AirSep Corp. - FreeStyle Service Manual

2.4

Oxygen Concentration Test and Specification To ensure that FreeStyle’s oxygen output is within specification, you must perform an oxygen concentration test. Test the unit upon delivery to a patient and at periodic intervals. Equipment Providers, based upon their own expertise and documentation, may establish and implement their own protocol to check oxygen concentration. 1. Connect the FreeStyle Oxygen Concentrator using an AirSep-supplied Universal AC or / DC power supply only (AirSep Part No. PW017-1) to a 100-240 volt, 50/60 Hz electrical outlet.

Note Previous AC to DC power AirSep P/N PW010-1 can be used as well.

2. Turn unit on by pressing setting 2 on keypad. 3. Simultaneously press and hold settings 1 and 3 for 10 seconds. After 10 seconds, the alarm will sound and the LEDs above each flow setting will illuminate verifying auto pulse mode. Control Panel

Flow Settings 1 - 3 Figure 2.1

4. Allow unit to warm – up for 5 minutes before recording oxygen concentration. 5. Connect a calibrated oxygen analyzer to the oxygen outlet and record the unit’s concentration, a 12” tube is recommended. The specification in test mode is 87% or higher.

AirSep Corp. - FreeStyle Service Manual

2-5

3.0

Patient Instructions 3.1

General Instructions It is important that patients thoroughly understand how to operate AirSep’s FreeStyle unit. This enables proper treatment as prescribed by a qualified, licensed physician. You must explain that 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 FreeStyle Patient Manual. Explain each step in the operation of the unit to the patient with reference to the patient manual.

3.1.1 Connecting to External Power When connecting the Universal AC / DC power supply to the FreeStyle unit, be certain to first properly align the power cord to this inlet. To do this, take note of the “D”-shaped plug of both the power cord connector and the FreeStyle’s inlet connection. These must be aligned, and the button on the power cord must be pressed in for removal. This ensures that neither the unit nor the power accessories are damaged. FreeStyle unit’s power inlet

“D”-shaped power cord plug connects to the FreeStyle unit’s “D”-shaped power inlet.

Press to remove power cord.

Figure 3.1

3.1.2 Optional AirBelt™ Battery Instruct patients that connecting an optional AirBelt to the unit by inserting the power into the unit’s power inlet provides additional total run time, per the specifications. Note that the unit battery must still have a charge remaining before the external AirBelt is connected. The patient should be advised to not fully deplete the unit battery as a small amount of power is needed to engage the AirBelt.

AirSep Corp. - FreeStyle Service Manual

3-1

The incorrect use of AirBelt can cause it to get hot, ignite, and may cause serious injury. Be sure not to pierce, strike, step on, or drop the battery, or otherwise subject the battery to strong impacts or shocks.

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

Connecting the AirBelt cord to the power supply cor

AC/DC Power Supply

Figure 3.2: AirBelt Battery Charging set up

Replace safety cap on AirBelt cord when not in use.

Do not attempt to charge the optional AirBelt with the any other power supply or the AirBelt can be damaged. Use only the AirBelt power supply provided to charge AirBelt.

   

3-2

The FreeStyle 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’s 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.

AirSep Corp. - FreeStyle Service Manual

Lithium batteries may permanently lose capacity when exposed to extremely hot temperatures with the batteries fully charged or completely depleted. For extended storage, it is recommended that batteries be charged 25 to 50% and remain within a temperature range of 73 F (23 C) +/- 2C.

Depending upon the temperature of the AirBelt 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 each use. If the AirBelt power supply remains connected when it is fully charged, the four LEDs will turn off within ½ hour.

AirSep Corp. - FreeStyle Service Manual

3-3

3.2

Routine Maintenance by the Patient To ensure accurate output and efficient operation of the unit, the patient must perform two simple, routine maintenance tasks:

3.2.1

•

Clean the air intake / gross particle filter

•

Contact the Equipment Provider for inspection/service when the alarm/service indicator illuminates.

Cleaning the Air Intake / Gross Particle Filter

The patient must clean this filter weekly, as described below. The filter may require daily cleaning if the FreeStyle unit operates in a harsh environment, for example, a house heated by wood, kerosene, or oil, or one with excessive cigarette smoke.

1.

The air intake / gross particle filter can be found on the lower front of the FreeStyle, as seen in the photo below.

Air Intake / Gross Particle Filter Cover

Figure 3.3

3-4

2.

Pull the filter cover off the front of the FreeStyle and remove the filter. Wash filter in a warm water and soap solution.

3.

Rinse the filter thoroughly, and remove excess water with a soft, absorbent towel. Ensure that the filter is dry before replacing it.

4.

Replace the dry filter into the filter cover.

5.

Place the filter cover back into housing and push back onto the FreeStyle unit.

AirSep Corp. - FreeStyle Service Manual