INVACARE Platinum Series Oxygen Concentrators Service Manual Rev D Aug 2006

ACCESSORIES

WARNING DO NOT OPERATE THIS EQUIPMENT WITHOUT FIRST READING AND UNDERSTANDING THIS MANUAL. IF YOU ARE UNABLE TO UNDERSTAND THE WARNINGS, CAUTIONS, AND INSTRUCTIONS, CONTACT INVACARE TECHNICAL SERVICES BEFORE ATTEMPTING TO USE THIS EQUIPMENT OTHERWISE SERIOUS INJURY OR PROPERTY DAMAGE MAY RESULT.

ACCESSORIES There are many different types of humidifiers, oxygen tubing, cannulas and masks that can be used with this device. You should contact your local home care provider for recommendations on which of these devices will be best for you. They should also give you advice on the proper usage, maintenance, and cleaning.

WARNING

Invacare products are specifically designed and manufactured for use in conjunction with Invacare accessories. Accessories designed by other manufacturers have not been tested by Invacare and are not recommended for use with Invacare products.

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Part No 1110538

TABLE OF CONTENTS

TABLE OF CONTENTS ACCESSORIES ... 2 SPECIAL NOTES ... 7 FEATURES ... 8 TYPICAL PRODUCT PARAMETERS ... 9 SECTION 1-IMPORTANT SAFEGUARDS ... 11 Important Safeguards ...11 Maintenance ...12 Radio Frequency Interference ...12 To Reduce the Risk of Burns, Electrocution, Fire or Injury to Persons...12 SECTION 2-INSTALLATION/SEQUENCE OF OPERATION ... 13 Installation/Verification of Battery Free Power Loss Alarm ...13 Sequence of Operation ...13 SensO2 Oxygen Sensor Technology - Ceramic Zirconia Sensor ...14 Technical Description ...14 Operating Sequence ...14 SECTION 3-PNEUMATIC DIAGRAM ... 16 SECTION 4-TROUBLESHOOTING ... 17 SECTION 5-CABINET ... 25 Removing Cabinet ...25 SECTION 6-PREVENTIVE MAINTENANCE ... 26 Cleaning the Cabinet Filter ...26 Replacing the Outlet HEPA Filter...27 Check the Outlet HEPA Filter...27 Replace the Outlet HEPA Filter before 060906 ...27 Replace the Outlet HEPA Filter after 060906...28 Replacing the Compressor Inlet Filter...28 Replacing the Exhaust Canister/Exhaust Muffler (Platinum 5 Models Manufactured before 7/ 24/03) ...29 Replacing the Throttling Muffler ...31 Cleaning the Heat Exchanger...31

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Platinum™Series

TABLE OF CONTENTS

TABLE OF CONTENTS SECTION 7-COMPRESSOR ... 33 Replacing Compressor Assembly ...33 Replacing Capacitor ...35 5-Liter Models (Platinum 5 and Platinum XL) ...35 10-Liter Model (Platinum 10) ...36 Rebuilding the Thomas Model 2650 and 2660 Compressor - Platinum 5 and 10 Models ...37 Removing Compressor and Compressor Heads ...38 Rebuilding the Compressor...41 Platinum XL Model - Rebuilding the Gast Compressor...45 Removing the Head Cover and Valve Plate Assembly...46 Removing Head Cover Gaskets, O-Ring Gaskets, Exhaust Valves and Limiter ...46 Installing the New Intake Valves, Exhaust Valves With Limiters...48 Removing the Existing Retainer Plate, Cups and Cylinders...49 Installing the New Head Cover Gaskets and O-Ring Gaskets ...51 Installing the Head Cover ...52 SECTION 8-P.E. VALVE ... 53 Replacing P.E. Valve...53 SECTION 9-SIEVE BEDS ... 54 Replacing Sieve Beds ...54 SECTION 10-CHECK VALVES ... 56 Replacing Check Valves...56 SECTION 11-REGULATOR ... 58 Replacing Regulator...58 Adjusting Regulator...60 SECTION 12-HEAT EXCHANGER ... 61 Replacing Heat Exchanger ...61 SECTION 13-CONTROL PANEL ... 62 Removing Control Panel...62 SECTION 14-COOLING FAN ... 64 Replacing Cooling Fan ...64 SECTION 15-P.C. BOARD ... 66 Replacing P.C. Board...66 SECTION 16-TRANSFORMER ... 68 Replacing Transformer Assembly ...68 Platinum™Series

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Part No 1110538

TABLE OF CONTENTS

TABLE OF CONTENTS SECTION 17-ON/OFF SWITCH ... 69 Replacing On/Off Switch...69 SECTION 18-FLOWMETER ... 70 Replacing Flowmeter ...70 SECTION 19-HOUR METER ... 72 Replacing Hour Meter ...72 SECTION 20- 4-WAY VALVE ... 73 Replacing 4-Way Valve...73 Replacing Manifold Assembly (Units Manufactured before 7/24/03)...74 Replacing Manifold Assembly (Units Manufactured after 7/24/03) ...77 Replacing Pilot Valve Poppets and O-Rings...80 SECTION 21-PURITY INDICATORS ... 83 SensO2 Alarm Indicators ...83 Operation ...83 Indicator Lights ...83 Indicators - If your unit does not feature the O2 Sensor ...84 LX Models Indicator Light Explanation...84 SECTION 22-TIMING ... 85 Timing the Platinum 5, XL, and 10 Concentrators...85 Autotuning...85 Manual Tuning...87 SECTION 23-LEAK TEST ... 89 Leak Test ...89 SECTION 24- ALARM TEST ... 91 Alarm and Sensor Tests...91 Power Loss Alarm ...91 Low Pressure Test...91 Time-Out Test...92 High Pressure Test ...92 Oxygen Sensor ...93 P.E. Valve Coil Test ...94

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SECTION 25- SIEVE BED PRESSURE CHECK ... 96 Installing the Sieve Bed Pressure Tap-In Kit Installation and Checking Bed Pressure ...96 Disassembly ...96 Installation...97 Pressure Testing...97 After Testing ...98 LIMITED WARRANTY ... 99

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Part No 1110538

SPECIAL NOTES

SPECIAL NOTES Signal words are used in this manual and apply to hazards or unsafe practices which could result in personal injury or property damage. Refer to the table below for definitions of the signal words. SIGNAL WORD

MEANING

DANGER

Danger indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.

WARNING

Warning indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.

CAUTION

Caution indicates a potentially hazardous situation which, if not avoided, may result in property damage.

NOTICE THE INFORMATION CONTAINED IN THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE.

 DANGER

Users MUST not smoke while using this device. Keep all matches, lighted cigarettes or other sources of ignition out of the room in which this product is located. NO SMOKING signs should be prominently displayed. Textiles and other materials that normally would not burn are easily ignited and burn with great intensity in oxygen enriched air. Failure to observe this warning can result in severe fire, property damage, and cause physical injury or death.

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FEATURES

FEATURES FRONT VIEW Oxygen Outlet Flowmeter

Oxygen Purity and Fault Indicator Lights (SensO2 model)/Fault and Power Indicator Lights (LX model) Power Switch Circuit Breaker Hour Meter

Cabinet Filter (one of two shown)

*NOTE: This outlet fitting is to be used only for filling oxygen cylinders with the HomeFill II home oxygen compressor. The outlet fitting does not affect concentrator performance. Refer to the HomeFill II owner's manual, part number 1100873, for connection and operating instructions. When not in use, the plug provided with the concentrator should be inserted into the outlet fitting. Outlet Fitting*

Power Cord ACCESSORIES (NOT SHOWN):

Remote Humidifier/Flowmeter Accessory IRCRF5 PreciseRX™ Pediatric Humidifier/ Flowmeter Accessory - IRCPF16 Homefill II home oxygen compressor - IOH200

TOP VIEW Platinum™Series

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Part No 1110538

TYPICAL PRODUCT PARAMETERS

TYPICAL PRODUCT PARAMETERS ELECTRICAL REQUIREMENTS:

120 VAC ± 10% (132 VAC/108 VAC), 60 Hz

RATED CURRENT INPUT:

Platinum 5 and XL: 4.3 A Platinum 10: 4.7 A

SOUND LEVEL:

Platinum 5 and XL: 50 dB Average Platinum 10: 58 dB Average

ALTITUDE:

Platinum 5 and XL - Up to 6,000 ft. (1828 meters) above sea level without degradation of concentration levels. From 6,000 ft. (1828 meters) to 13,129 ft. (4000 meters) below 90% efficiency Platinum 10 - Up to 4,000 ft. (1230 meters) above sea level without degradation of concentration levels. From 4,000 ft. (1230 meters) to 13,129 ft. (4000 meters) below 90% efficiency.

*OXYGEN OUTPUT CONCENTRATION LEVELS:

All 5LXO2/5LX models 95.6% to 87% at 0.5 to 5 L/min. and all 10LXO2/10LX models 95.6% to 87% at 2 L to 10 L/min. * Stated concentration levels achieved after initial warm-up period (approximately 30 minutes).

MAXIMUM OUTLET PRESSURE:

Platinum 5 and XL: 5 ± 0.5 psi. (34.5 ± 3.45 kPa) Platinum 10: 9 psi ± 0.5 psi. (62.0 kPa ± 3.45 kPa)

FLOW RANGE:

Platinum 5 and XL - 0.5 to 5 L/min. For flowrates less than 1 L/min., we recommend the use of the Invacare Pediatric Flowmeter IRCPF16 Accessory. Platinum 10 - 2 L/min. to 10 L/min.

LOW FLOW ALARM:

Platinum 5 - 0 L/min. to 0.5 L/min. Platinum 10 - 0 L/min. to 1 L/min. Rapid Audible Alarm Beeping (No Accessories Connected).

AVERAGE POWER CONSUMPTION:

Platinum 5 and XL: 400W Platinum 10: 585W

PRESSURE RELIEF MECHANISM OPERATIONAL AT:

35 psi ± 3.5 psi (241 kPa ± 24.1 kPa).

CHANGE IN MAXIMUM RECOMMENDED FLOW WHEN BACK PRESSURE OF 7K PA IS APPLIED:

0.7 L/min.

FILTERS:

Cabinet (2), Outlet HEPA and Compressor Inlet.

SAFETY SYSTEM:

Current overload or line surge shutdown. High temperature compressor shutdown. High Pressure Alarm w/compressor shutdown. Low Pressure Alarm w/compressor shutdown. Battery Free Power Loss Alarm. SensO2 Oxygen System (SensO2 Model) Low Flow Alarm.

WIDTH:

18 3/8 in. ± 3/8 in. (46.7 cm ± 1 cm).

HEIGHT:

26 3/8 in. ± 3/8 in. (67.0 cm ± 1 cm).

DEPTH:

14 3/8 in. ± 3/8 in. (36.5 cm ± 1 cm).

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TYPICAL PRODUCT PARAMETERS WEIGHT:

Platinum 5 and XL: 52 lbs ± 2 lbs (23.6 kg ± 1 kg). Platinum 10: 53 lbs ± 2 lbs (24.0 kg ± 1 kg).

SHIPPING WEIGHT:

Platinum 5 and XL: 58 lbs ± 2 lbs (26.3 kg ± 1 kg). Platinum 10: 60 lbs ± 2 lbs (27.2 kg ± 1 kg).

OPERATING AMBIENT TEMPERATURE:

50°F - 95°F (10°C - 35°C) at 20-60% relative humidity.

EXHAUST:

Platinum 5 and XL: Less than Ambient + 35°F (+19°C). Platinum 10: Less than Ambient + 45°F (+25°C).

OXYGEN OUTPUT:

Platinum 5 and XL: Less than Ambient + 4°F (+2°C). Platinum 10: Less than Ambient + 8°F (+4.4°C).

CABINET:

Impact Resistant flame-retardant plastic cabinet that conforms to UL 94-V0.

REGULATORY LISTING:

Double Insulated Product ETL certified complying with UL 1097 ETL certified to CSA C22.2 No. 68.

ELECTRICAL:

No extension cords.

PLACEMENT:

No closer than three inches from any wall, furniture, draperies, or similar surfaces.

TUBING:

Platinum 5 and XL: 7 ft cannula with a maximum 50 ft of Crush-Proof Tubing (DO NOT pinch). Platinum 10: Recommended use up to 50 ft high flow tubing with high flow cannula at all flow rates.

RELATIVE HUMIDITY:

20 to 60%.

TIME OF OPERATION:

Up to 24 hours per day.

RECOMMENDED STORAGE AND SHIPPING TEMPERATURE:

-20°F to 150°F (-29°C to 65°C), at 15-95% relative humidity.

LABEL SYMBOL

O2

LABEL SYMBOL

I/O

Platinum™Series

STATUS

SENSO2 MODELS INDICATOR LIGHTS (LED)

SYSTEM OKAY O2 over 85% (± 2%)

GREEN Indicator Light

O2 Between 73% (± 3%) to 85% (±2%)

YELLOW Indicator light A. YELLOW Solid B. YELLOW Flashing Sensor Failure Call a qualified technician.

SYSTEM FAILURE O2 Below 73% (±3%)

RED Indicator light Continuous Audible Alarm Sieve-GARD™Compressor Shutdown Call a qualified technician

STATUS

LX MODEL INDICATOR LIGHTS (LED)

SYSTEM OKAY

GREEN Indicator Light

SYSTEM FAILURE

RED Indicator light Continuous Audible Alarm Sieve-GARD™ Compressor Shutdown Call a qualified technician

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Part No 1110538

SECTION 1-IMPORTANT SAFEGUARDS

SECTION 1-IMPORTANT SAFEGUARDS
WARNING

IMPORTANT SAFEGUARDS contains important information for the safe operation and use of this product. DO NOT use this product or any available optional equipment without first completely reading and understanding these instructions and any additional instructional material such as Owner’s Manuals, Service Manuals or Instruction Sheets supplied with this product or optional equipment. If you are unable to understand the Warnings, Cautions or Instructions, contact a healthcare professional, dealer or technical personnel before attempting to use this equipment - otherwise, injury or damage may occur.

Important Safeguards The use of oxygen therapy requires that special care be taken to reduce the risk of fire. Any materials that will burn in air, and some that will not, are easily ignited and burn rapidly in high concentrations of oxygen. For safety concerns, keep all sources of ignition out of the room in which this product is located and away from areas where oxygen is being delivered. Textiles, oil and other combustibles are easily ignited and will burn with great intensity in oxygen-enriched air. NO SMOKING signs should be prominently displayed. A spontaneous and violent ignition may occur if oil, grease or greasy substances come in contact with oxygen under pressure. These substances MUST be kept away from the oxygen concentrator, tubing and connections, and all other oxygen equipment. DO NOT use any lubricants unless recommended by Invacare. For optimum performance, Invacare recommends that each concentrator be on and running for a minimum of 30 minutes at a time. Shorter periods of operation may be harmful for maximum product life. Keep the oxygen tubing, cord, and unit away from heated or hot surfaces, including space heaters, electric blankets, stoves and similar electrical appliances. DO NOT move or relocate concentrator by pulling on the power cord. NEVER drop or insert any object into any opening. NEVER block the air openings of the product or place it on a soft surface, such as a bed or couch, where the air opening may be blocked. Keep the openings free from lint, hair and the like. Fill humidifier with water to the level shown by the manufacturer. DO NOT overfill. Invacare recommends that Crush-Proof oxygen tubing be used with this product and NOT exceed 50 ft. (15.2m) in length. Recommended use for Platinum 10 is up to 50 ft. in length of high flow tubing.

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SECTION 1-IMPORTANT SAFEGUARDS

Maintenance The Platinum Oxygen Concentrator was specifically designed to minimize routine preventive maintenance. Only professionals of the healthcare field or persons fully conversant with this process, such as authorized or factory trained personnel, should perform preventive maintenance or performance adjustments on the oxygen concentrator.

Radio Frequency Interference Most electronic equipment is influenced by Radio Frequency Interference (RFI). CAUTION should be exercised with regard to the use of portable communications equipment in the area around such equipment.

To Reduce the Risk of Burns, Electrocution, Fire or Injury to Persons DO NOT come in contact with the concentrator while you are wet. DO NOT place or store product where it can drop into water or other liquids. DO NOT reach for product that has fallen into water. Unplug IMMEDIATELY. No adjustments should be made to the flowrate unless prescribed by a physician therapist. The product should NEVER be left unattended when it is plugged in. Close supervision is necessary when this product is used by, on or near children or physically challenged individuals. The Platinum concentrator is intended to be used only as an oxygen supplement as described in the Owner's Manual. Invacare products are specifically designed and manufactured for use in conjunction with Invacare accessories. Accessories designed by other manufacturers have not been tested by Invacare and are not recommended for use with Invacare products. DO NOT connect the concentrator in parallel or series with other oxygen concentrators or oxygen therapy devices. Use of some administration accessories or certain humidifiers not specified for use with oxygen concentrator may impact the performance. Avoid creation of any spark near medical oxygen equipment. This includes sparks from static electricity created by any type of friction.

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Part No 1110538

SECTION 2-INSTALLATION/SEQUENCE OF OPERATION

SECTION 2-INSTALLATION/ SEQUENCE OF OPERATION Installation/Verification of Battery Free Power Loss Alarm When your new Platinum concentrator arrives, it should be checked for proper operating conditions. 1. If the unit has been in below-freezing temperatures, allow it to warm up to room temperature before operating. 2. The concentrator may need to be turned on for four to five seconds to charge the Battery Free Power Loss Alarm. Connect power cord to outlet and turn the concentrator on. Turn flow control knob counterclockwise and flow will begin IMMEDIATELY. Set flow rate to five L/min. Let the unit run for 30 minutes, then turn unit off. 3. Unplug the power cord and press on/off ( I/O ) switch to the On (I/) position. An intermittent audible alarm will sound. This confirms proper operation of the Battery Free Power Loss Alarm. Turn On/Off switch Off (O ). 4. Connect power cord to outlet and turn on concentrator. Unit will beep on start-up. 5. Check the oxygen concentration per specifications after 30-40 minutes running time.

Sequence of Operation Turning on (I) the power switch applies 120 VAC to the compressor motor, hour meter, transformer, cooling fan and the printed circuit (P.C.) board. Room air enters the compressor via the cabinet filter and the compressor inlet filter. The air is compressed by the wobble pistons in the compressor to a pressure of 21 p.s.i. (144.79 kPa) for Platinum 5, XL and 25 p.s.i. (172.36 kPa) for Platinum 10. As increased pressure creates increased temperature, a heat exchanger is used to lower the temperature before the air enters the 4-way valve. It is then channeled to a sieve bed containing the adsorption material. Restriction downstream of the sieve bed causes pressure to build up inside the sieve bed which is necessary for the adsorption process. A small amount of relatively pure oxygen enters the top of the second bed through a restrictive leak in the pressure equalization (P.E.) valve with the balance entering a storage tank. The nitrogen removed is exhausted back from the bed through the 4-way valve into room air. A muffler is located at the exhaust end of the valve to muffle the sound of the exhaust as it exits the concentrator. The oxygen not being used to exhaust is channeled into the storage tank. The pressurized oxygen is regulated down to five p.s.i. (34.4 kPa), enters an accurate flow-measuring device, flows through Outlet HEPA filter and check valve, then out to the patient. Part No 1110538

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Platinum™Series

SECTION 2-INSTALLATION/SEQUENCE OF OPERATION The electrical activation of the 4-way Valve is accomplished every 8 to 15 seconds by the pressure sensor and P.C. Board electronics when the pressure reaches a set point of 21 p.s.i. (144.79 kPa) for Platinum 5 and XL; 25 p.s.i. (172.36) for Platinum 10. The time between cycles is dependent on altitude, flow rate and internal environmental factors. A P.E. valve opens just prior to the shift of the 4-way valve. This allows highly concentrated oxygen to enter the just exhausted bed from the top. This additional pressure allows the bed to start its cycle at a higher pressure. The P.E. valve will close just after the shift of the 4-way valve. If main power is lost, the Battery Free Power Loss Alarm will sound a short "BEEP", with a long pause after. All units are equipped with a diagnostic alarm system that signals if the pneumatic pressure or electrical systems malfunction. The Troubleshooting Guide in this manual explains the alarm system signals and reasons, in detail, for your convenience.

SensO2 Oxygen Sensor Technology - Ceramic Zirconia Sensor Technical Description The oxygen being produced by the concentrator flows out of the product tank and into the flowmeter. A small flow of oxygen produced by the unit is sent through a precision orifice to the oxygen sensor mounted on the printed circuit board. As the oxygen enters the sensor, it passes through a screen and contacts the sensing disk. Electric current flowing through a metal film resistor heats the disk in excess of 300° C. Oxygen molecules contact the electrode of the disk and pick-up extra electrons to become oxygen ions. These oxygen ions are attracted to the electrode on the bottom of the zirconia sensing disk. Because of the crystal structure of the zirconia, only oxygen ions can pass through. When the oxygen ions reach the bottom electrode, the extra electrons are released from the oxygen ions and oxygen molecules return to the air. The number of electrons is directly related to the oxygen concentration. The electrons travel to the P.C. board where they are counted and the oxygen concentration reading is calculated. A microprocessor on the P.C. board contains software that interprets the signal being received from the sensor. It compares the signal to clinically acceptable limits. Signals outside of the clinically acceptable limits generate responses in the form of lights, audible indicators, and/or system shut-down.

Operating Sequence Once the power switch has been turned on (I/), the SensO2 circuit will wait five minutes for the concentrator to begin producing clinically acceptable oxygen and the oxygen sensor to stabilize. The GREEN light will illuminate (indicating normal system operation) while the oxygen sensor is warming up. Platinum™Series

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Part No 1110538

SECTION 2-INSTALLATION/SEQUENCE OF OPERATION After five minutes, if the oxygen purity exceeds 85% ± 2%, the GREEN light will continue to illuminate. If the oxygen level is not above 85% ± 2% after the first five minutes, the system will continue to monitor the O2 and wait for a maximum of 30 minutes from start-up to reach 85% ± 2% before activating an alarm. Environmental factors such as low voltage, high altitude, or age of the machine will affect the time required to reach 85% ± 2%. If the oxygen level is not above 85% ± 2% within the first 30 minutes, the oxygen concentration alarm sequence will activate and the unit will shut down. When oxygen concentration is above 85% ± 2%, the sensor measures oxygen purity every 10 minutes. If a reading falls below 85% ± 2%, a YELLOW light will illuminate. If the oxygen purity falls below 73% ± 3% the RED light/Alarm/Shut-Down mode will activate.

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SECTION 3-PNEUMATIC DIAGRAM

SECTION 3-PNEUMATIC DIAGRAM Plantinum Oxygen Concentrator

Ouput HEPA Filter

Output Check Valve

Flowmeter

Patient Output Oxygen Sensor (SensO2 models Only)

Pressure Regulator

Pressure Sensor P.S.I.

O2

P.C. Board

Product Tank

Check Valves

Air Inlet

Cabinet Filter(s) Compressor Inlet Filter Sieve Bed

P.E. Valve

Sieve Bed 4-way Valve

Compressor

Solenoid Pilot

Relief Valve

Exhaust Muffler

Heat LEGEND Pneumatic Connections

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Electrical Connections

Part No 1110538

SECTION 4-TROUBLESHOOTING

SECTION 4-TROUBLESHOOTING SYMPTOM

PROBABLE CAUSE

NORMAL OPERATION: No Problems Internal Status Indicators: RED: Off GREEN: Off Unit plugged in, power switch on. Single beep on start up. POWER LOSS: No Problems. Internal Status Indicators: RED: Off GREEN: Off Unit unplugged, power switch on, alarm off. No power at outlet. POWER LOSS: Internal Status Indicators: RED: Off GREEN: Off Unit plugged in, power switch, alarm off, battery Free circuit drained.

Battery Free Circuit drained. Plug in cord and turn power switch ON (I) to recharge.

Check electrical outlet with a table lamp or voltmeter set on 50-200 VAC scale. If outlet isn't working, check protective device in home's electrical panel or consult an electrician. Also ensure that unit is properly plugged in. DO NOT use extension cords. Move to another outlet or circuit.

Power cord: a. Frayed. b. Broken or damaged spade. c. Spade connector from power cord loose or disconnected (inside back of unit).

Part No 1110538

SOLUTION System Okay.

17

a. Reattach cord. b. Replace power cord connectors on plug. c. Reattach connector.

Platinum™Series

SECTION 4-TROUBLESHOOTING SYMPTOM POWER LOSS: (Continued) Internal Status Indicators: RED: Off GREEN: Off Unit plugged in, power switch, alarm off. Battery Free circuit drained

PROBABLE CAUSE On/Off ( I/O ) switch. a. Disconnected wire. b. Faulty switch.

Circuit breaker tripped.

P.C. board. a. P.C. board damaged. b. Loose or damaged connector. Transformer assembly. a. Faulty.

INTERNAL POWER LOSS SENSO2: Internal Status Indicators: b. Connector loose or disconnected. RED: Off c. Faulty wiring. GREEN: Off Alarm may or may not be on. Control Panel Indicators: P.C. board faulty. RED: Off YELLOW: Off GREEN: Off Fan operates, Compressor not operating.

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SOLUTION Check all electrical connections to the ON/OFF ( I/O ) switch for any disconnected wires. If the concentrator does not come on at all and wiring is intact, color code and remove wires one at a time. Remove and replace with new one. Transfer wires from old switch to new switch one at a time to the matching contact. Reset breaker. NOTE: Breaker may trip to safeguard concentrator during a power surge. If breaker trips IMMEDIATELY, there is a probable short in the unit. Check for pinched or charred wires. If the breaker does not trip, run unit for approximately two hours. The circuit breaker should be less than 10 ohms. If breaker trips again, there is an internal problem. Contact INVACARE TECHNICAL SERVICE at 1800-832-4707. a. Replace P.C. Board. Refer to Replacing P.C. Board on page 66. b. Repair or replace connector. a. Replace. Refer to Replacing Transformer Assembly on page 68. b. Reattach connector. c. Replace transformer assembly. Refer to Replacing Transformer Assembly on page 68. Replace P.C. board. Unit requires retiming after P.C. board replacement. Refer to Replacing P.C. Board on page 66.

Part No 1110538

SECTION 4-TROUBLESHOOTING SYMPTOM

PROBABLE CAUSE

P.C. board: HIGH PRESSURE: a. Malfunction Internal Status Indicators: RED: One Flash GREEN: Two Flashes Unit plugged in, power switch on, continuous alarm. Compressor shut down.

b. Disconnected wire. c. Shifting valve at pressures greater than 25 p.s.i. for Platinum 5 and XL; 29 PSI for Platinum 10. 4-way Valve: a. Not shifting.

a. Set flow to max L/min. for concentrator. Check voltage across Pilot Valve 1 on 200 volt scale. If meter reads 0 volts when unit is turned on, replace P.C. board b. Check spade connectors on pilot valves 1 or 2 and connectors on P.C. board. c. Replace P.C. board. Unit requires retiming after P.C. board replacement. Refer to Replacing P.C. Board on page 66. a. Check voltage. If voltage rises to approximately 24 volts D.C. when unit shuts down, P.C. board is functioning properly. Replace the valve if shorted or open. Refer to Replacing 4-Way Valve on page 73. b. Replace 4-way valve. Refer to Replacing 4-Way Valve on page 73. c. Coil should read 80 ohm ± 10.

b. Bad coil. c. Coil resistance.

Part No 1110538

SOLUTION

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Platinum™Series

SECTION 4-TROUBLESHOOTING SYMPTOM

PROBABLE CAUSE

Compressor inlet filter dirty or plugged. LOW PRESSURE: Internal Status Indicators: RED: One Flash GREEN: One Flash Compressor: Or a. Leaks at fittings or tubing RED: One Flash b. Leaking or defective relief valve. GREEN: Three Flashes c. Insufficient voltage at outlet. d. Worn cup seals or gaskets. Control Panel Indicators: RED: On YELLOW: Off GREEN: Off Unit plugged in, power switch on, continuous audible alarm. Compressor shut down (Failure to cycle due to low pressure).

Heat exchanger: a. Leak at tubing or body chamber. b. Inspect tubing and heat exchanger.

Defective Parts: Internal Status Indicators: RED: One Flash GREEN: Five Flashes Or RED: Two Flashes GREEN: Three Flashes CONTROL PANEL INDICATORS: RED: On YELLOW: Off GREEN: Off Unit plugged in, power switch on, continuous audible alarm. Compressor shut down.

Defective main valve coil.

Platinum™Series

Regulator cracked or leaking. P.E. valve leaking.

Connector loose. Defective P.E. valve coil. (Resistance 80 ohm’s ± 10.) Defective P.E. valve. Connector loose. Defective P.C. board.

20

SOLUTION Replace compressor inlet filter. Refer to Replacing the Compressor Inlet Filter on page 28. a. Replace or repair. b. Repair leak or replace. c. DO NOT use extension cords. Use another outlet. d. Rebuild top end of compressor. Refer to Rebuilding the Thomas Model 2650 and 2660 Compressor Platinum 5 and 10 Models on page 37 or Platinum XL Model - Rebuilding the Gast Compressor on page 45. a. Replace or retighten. b. Replace or retighten tubing. Replace heat exchanger. Refer to Replacing Heat Exchanger on page 61. Replace regulator. Refer to Replacing Regulator on page 58. Replace P.E. Valve. Check voltage at P.E. valve connector on 24 volt D.C. scale. The P.E. Valve activates or energizes approximately one second prior to the activation of the 4 way valve with approximately 24 volts. If voltage is in excess of 24 volts consistently, replace the P.C. board. Refer to Replacing P.C. Board on page 66. If the P.C. board voltage acts normally, replace the P.E. valve. Refer to Replacing P.E. Valve on page 53. NOTE: Check for leaks starting at the compressor output through all the pneumatic connections. Major leaks will cause system pressures to remain below adequate shift (exhaust) pressures and will cause compressor shutdown. a. Replace main valve. b. Replace main valve coil. Reattach connector. Replace P.E. coil if shorted or open on resistance check. Refer to Replacing P.E. Valve on page 53. Replace P.E. valve. Refer to Replacing P.E. Valve on page 53. Reattach connector. Replace P.C. board. Refer to Replacing P.C. Board on page 66.

Part No 1110538