- The Invacare Perfecto2 concentrator is used by patients with respiratory disorders who require supplemental oxygen. The device is not intended to sustain or support life.
- The oxygen concentration level of the output gas ranges from 87% to 95.6%. The oxygen is delivered to the patient through the use of a nasal cannula.
- The Invacare Perfecto2 concentrator uses a molecular sieve and pressure swing adsorption methodology to produce the oxygen gas output. Ambient air enters the device, is filtered and then compressed. This compressed air is then directed toward one of two nitrogen adsorbing sieve beds. Concentrated oxygen exits the opposite end of the active sieve bed and is directed into an oxygen reservoir where it is delivered to the patient.
- The Invacare Perfecto2 concentrator is capable of operation by the patient in a home environment or in an institutional environment. Device operates at a nominal 120 VAC/60 Hertz supply.
The Invacare PerfectO2 is an oxygen concentrator used to provide medical-grade oxygen therapy to patients. If you are experiencing issues with the device, here are some troubleshooting you can take:
| SYMPTOM | PROBABLE CAUSE | SOLUTION |
| Normal Operation: Internal Status Indicators: RED: Off GREEN: Off Unit plugged in, power switch on. Single beep on start up. | No Problems. | System Okay. |
| Power loss: Internal Status Indicators: RED: Off GREEN: Off Unit unplugged, power switch on, alarm off. | No Problems. | Battery Free Circuit drained. Plug in cord and turn power switch ON (I) to recharge. |
| Power loss: Internal Status Indicators: RED: Off GREEN: Off Unit plugged in, power switch , alarm off, battery Free circuit drained. | 1. No power at outlet. 2. Power cord: a. Frayed. b. Broken or damaged spade. c. Spade connector from power cord loose or disconnected (inside back of unit). 3. On/Off (I/O) switch. a. Disconnected wire. b. Faulty switch. 4. Circuit breaker tripped. | 1. No power at outlet: 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. 2. Power cord: a. Reattach cord. b. Replace power cord connectors on plug. c. Reattach connector. 3. On/Off (I/ ) switch. a. Check all electrical connections to the ON/OFF (I/O) switch for any disconnected wires. b. 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. 4. Circuit breaker tripped: 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. |
| Power Loss: (Continued) Internal Status Indicators: RED: Off GREEN: Off Unit plugged in, power switch, alarm off. Battery Free circuit drained | P.C. board. a. P.C. board damaged. b. Loose or damaged connector. | a. Replace P.C. Board. b. Repair or replace connector. |
| Internal Power Loss Senso2 : Internal Status Indicators: RED: Off GREEN: Off Alarm may or may not be on. Control Panel Indicators: RED: Off YELLOW: Off GREEN: Off Fan operates, Compressor not operating | 1. Transformer assembly. a. Faulty. b. Connector loose or disconnected. c. Faulty wiring. 2. P.C. board faulty | 1. Transformer assembly: a. Replacing the transformer . b. Reattach connector. c. Replace transformer assembly 2. P.C. board faulty: 2. Replace P.C. board. Unit requires retiming after P.C. board replacement. |
| High Pressure: Internal Status Indicators: RED: One Flash GREEN: Two Flashes Unit plugged in, power switch on, continuous alarm. Compressor shut down. | 1. P.C. board: a. Malfunction b. Disconnected wire. c. Shifting valve at pressures greater than 25 p.s.i. for Perfecto2. 2. 4-way Valve: a. Not shifting. b. Bad coil. c. Coil resistance 3. Compressor inlet filter dirty or plugged. | 1. P.C. board: a. Set flow to max L/min. for concentrator. Check voltage across Pilot Valve 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. 2. 4-way Valve: 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 and/or Manifold Assembly. b. Replace 4-way valve. Refer to Replacing 4-Way Valve and/or Manifold Assembly. c. Coil should read 175 ohm ± 20 3. Compressor inlet filter dirty or plugged: Replace compressor inlet filter. Refer to Replacing the Compressor Inlet HEPA Filter. |
| LOW PRESSURE: Internal Status Indicators: RED: One Flash GREEN: One Flash Or RED: One Flash GREEN: Three Flashes 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). | 1. Compressor: a. Leaks at fittings or tubing b. Leaking or defective relief valve. c. Insufficient voltage at outlet. d. Worn cup seals or gaskets. 2. Heat exchanger: a. Leak at tubing or body chamber. b. Inspect tubing and heat exchanger. 3. Regulator cracked or leaking. 4. P.E. valve leaking. | 1. Compressor: 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 2660 Compressor. 2. Heat exchanger: a. Replace or retighten. b. Replace or retighten tubing. Replace heat exchanger. Refer to Replacing Heat Exchanger Assembly. 3. Regulator cracked or leaking: Replace Regulator 4. P.E. valve leaking: 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. If the P.C. board voltage acts, normally, replace the P.E. valve. 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. |
| 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. | 1. Defective main valve coil. 2. Connector loose. 3. Defective P.E. valve coil. (Resistance 80 ohm’s ± 10.) 4. Defective P.E. valve. 5. Connector loose. 6. Defective P.C. board. | 1. Defective main valve coil. a. Replace main valve. b. Replace main valve coil. 2. Connector loose. Reattach connector. 3. Defective P.E. valve coil. Replace P.E. coil if shorted or open on resistance check. 4. Defective P.E. valve. Replace P.E. valve. 5. Connector loose. Reattach connector. 6. Defective P.C. board. Replace P.C. board. |
| Unit not operating: Alarm: On or Off Internal Status Indicators: RED: Two Flashes GREEN: Four Flashes Or RED: Two Flashes GREEN: Five Flashes | P.C. board Failure. | Replace P.C. board |
| Low Concentration: NOTE: Check for O2 purity using a calibrated Oxygen Analyzer at Test Point 1 (oxygen outlet) of the concentrator. Internal Status Indicators: RED: Two Flashes GREEN: One Flash73% Shutdown Control Panel Indicators: SensO2 ONLY: RED: On YELLOW: Off GREEN: Off For SensO2 units, the RED indicator will signal extremely low purity and will be accompanied by a continuous audible alarm and a system shutdown. Repairs are required. | 1. Cabinet filters dirty. 2. Compressor inlet filter dirty. 3. Compressor: a. Defective. b. Faulty capacitor. c. Bad motor windings. d. Worn seals. e. Bad bearings. f. Leak at fittings or tubing. g. Leaky or defective relief valve. h. Insufficient voltage (outlet). 4. Heat exchanger: a. Leak at tubing or body chamber. b. Inspect tubing and heat exchanger. 5. Regulator cracked or leaking. 6. Exhaust muffler dirty or plugged. 7. Fan: a. Not operating. Unit overheating. b. Faulty fan. 8. Sieve beds defective. 9. Tubing kinked or blocked. | 1. Cabinet filters dirty. Clean or replace. Replacing the Outlet HEPA Filter, and Replacing the Compressor Inlet HEPA Filter. 2. Compressor inlet filter dirty. Replace inlet filter. Refer to Replacing the Compressor Inlet HEPA Filter. 3. Compressor: a. Replace compressor. b. Replace capacitor. c. Replace compressor. d. Rebuild top end of compressor. e. Replace compressor. f. Replace fittings or tubing. g. Replace relief valve. h. DO NOT use extension cords. 4. Heat exchanger: a. Replace or retighten. b. Replace or retighten tubing. Replace heat exchanger. 5. Regulator cracked or leaking. Replacing Regulator. 6. Exhaust muffler dirty or plugged. Replacing the Muffler Assembly. 7. Fan: a. Leads to fan disconnected. Reconnect. b. Replacing Cooling Fan. 8. Sieve beds defective. Replace Sieve Bed. 9. Tubing kinked or blocked. Repair or replace. |
| Low Concentration (Continued) | 1. P.C. board: a. Shifts at wrong pressures. 2. Flowmeter: a. Flowmeter opened beyond maximum flow rate. b. Cracked or broken fitting. c. Input tubing leaking or loose. 3. Timing. 4. P.E. valve: a. Bad coil. b. Restrictor blockage. 5. Inspect P.C. board restrictor tubing for kinks or tears. | 1. P.C. board: Check pressure at product tank. Pressure should rise to 21 p.s.i. at shift point. If not, replace P.C. Board. 2. Flowmeter: a. Return flow to maximum setting. b. Replace fitting. c. Repair or replace. 3. Timing. To accommodate for varying tolerances when replacing components, an adjustable timer is used to control the shifting of the Pressure Equalization (P.E.) valve. 4. P.E. valve: a. Replace P.E. valve. b. Replace P.E. valve. 5. Inspect P.C. board restrictor tubing for kinks or tears. Replace P.C. board. Unit may need retiming after board replacement. |
| Fluctuating Flow: | 1. Regulator/Flowmeter: a. Incorrectly set regulator. b. Flowmeter malfunction. 2. Outlet HEPA filter: a. Dirty or plugged | 1. Regulator/Flowmeter: a. Check pressure at oxygen outlet. Adjust regulator. b. If flow is still unstable, check for leaks starting at the compressor outlet fitting through all pneumatic connections. If no leaks are found and flow is still fluctuating, replace the regulator. If pressure at test point is within spec (5 p.s.i. ± 0.5 max. [34.4 kPa ± 6.89]), replace flowmeter. 2. Outlet HEPA filter: a. If low flow conditions persist, replace outlet HEPA filter. |
| Unit Excessively Loud: | 1. Pneumatic exhaust: a. Muffler cracked, damaged or missing. b. Muffler tubing disconnected or damaged. 2. Compressor inlet filter missing and/or orange sticker removed. 3. Compressor removed. 4. Incorrect style of inlet filter (aftermarket). | 1. Pneumatic exhaust: a. Replacing the Muffler Assembly. b. Reconnect or replace tubing. 2. Compressor inlet filter missing and/or orange sticker removed. a. Replace compressor inlet filter. 3. Compressor removed. a. Replace Compressor. 4. Incorrect style of inlet filter (aftermarket). a. Replace with factory OEM sound reduced style inlet HEPA filter. |
| Unit Overheats: | 1. Base exhaust vent plugged or restricted. 2. Cabinet filters dirty or blocked. 3. Fan: a. Leads to fan disconnected. b. Defective fan. c. Fan installed upside down. 4. Heat exchanger: a. Dirty or plugged. b. Damaged. 5. Compressor: a. Defective. b. Faulty capacitor. c. Bad motor windings. d. Worn seals. e. Bad bearings. 6. Line voltage excessive (surge). | 1. Base exhaust vent plugged or restricted. Place unit at least 12 inches from any wall. DO NOT place unit on pile or shag carpeting that may restrict air flow. 2. Cabinet filters dirty or blocked. Clean or replace. 3. Fan: a. Reconnect leads. b. Replace fan. c. Install fan with air flow arrow pointing down. 4. Heat exchanger: a. Clean heat exchanger. b. Replace heat exchanger. 5. Compressor: a. Replace compressor. b. Replace capacitor. c. Replace compressor. d. Replace compressor. e. Replace compressor. 6. Line voltage excessive (surge). Have line voltage inspected by certified electrician. A voltage regulator may be required and is obtainable from your local electric company. |
| Oxygen Purity: Good Internal Status Indicators: Control Panel Indicators: RED: Off YELLOW: On GREEN: On After 30 minutes of run time, unit operates normally, oxygen purity within normal range. GREEN or YELLOW panel indicator should illuminate. | P.C. board defective. | Replace P.C. board. Unit may need retiming after P.C. board replacement. |
| Unit Not Operating, Internal Status Indicators: RED: Off GREEN: Off Control Panel Indicators: RED: Off YELLOW: Off GREEN: Off Power Switch ON. Continuous audible alarm. | Transformer assembly: a. Assembly connector disconnected. b. Faulty transformer assembly | a. Reattach connector. b. Replace transformer assembly. |
| Unit Operating, Internal Status Indicators: RED: Three Flashes GREEN: One Flash Control Panel Indicators: RED: Off YELLOW: Flashing GREEN: On | Internal repairs required. | Replace SensO2 circuit board. |
| Potential Obstruction Alert does not activate on flows less than 0.5 L/min. | 1. System leak. 2. Defective check valves. | 1. System leak. Repair leak in product tank, regulator, tubing, fittings, or flow meter. 2. Defective check valves. Replace check valves. |
