Invacare Perfecto2 IRC5PO2AW Service Manual page 51

Symptom
Low Concentration:
Check for O purity using a calibrated
2
Oxygen Analyzer at Test Point 1
(oxygen outlet) of the concentrator.
Internal Status Indicators:
RED: Two Flashes
GREEN: One Flash73%
Shutdown Control Panel
Indicators:
RED: On
YELLOW: Off
GREEN: Off
For SensO units, the RED indicator will signal
2
extremely low purity and will be accompanied
by a continuous audible alarm and a system
shutdown. Repairs are required.
1154245-F-02
Probable Cause
1. Cabinet filters dirty.
2. Compressor inlet filter dirty.
Compressor:
1. Defective.
2. Faulty capacitor.
3. Bad motor windings.
4. Worn seals.
5. Bad bearings.
6. Leak at fittings or tubing.
7. Leaky or defective relief valve.
8. Insufficient voltage (outlet).
Heat exchanger:
1. Leak at tubing or body chamber.
2. Inspect tubing and heat exchanger.
Regulator cracked or leaking.
Leaky check valves.
Exhaust muffler dirty or plugged.
Fan:
1. Not operating. Unit overheating.
2. Faulty fan.
Sieve beds defective.
Tubing kinked or blocked.
P. C. board:
1. Shifts at wrong pressures.
Flowmeter:
1. Flowmeter opened beyond
maximum flow rate.
2. Cracked or broken fitting.
3. Input tubing leaking or loose.
P. E. valve:
1. Bad coil.
2. Restrictor blockage.
Inspect P. C. board restrictor tubing
for kinks or tears.
Solution
1. Clean or replace. Refer to 5.1 Cleaning the
Cabinet Filter, page 12 and 5.3 Replacing the
Outlet HEPA Filter, page 13.
2. Replace inlet filter. Refer to 5.4 Replacing the
Compressor Inlet HEPA Filter, page 13.
1. Replace compressor. Refer to 6.2 Replacing
Compressor Assembly, page 18.
2. Replace capacitor. Refer to 6.3 Replacing
Capacitor, page 21.
3. Replace compressor. Refer to 6.2 Replacing
Compressor Assembly, page 18.
4. Replace compressor. Refer to 6.2 Replacing
Compressor Assembly, page 18.
5. Replace compressor. Refer to 6.2 Replacing
Compressor Assembly, page 18.
6. Replace fittings or tubing.
7. Replace relief valve.
8. DO NOT use extension cords.
1. Replace or retighten.
2. Replace or retighten. Replace heat exchanger.
Refer to 6.9 Replacing Heat Exchanger Assembly,
page 28.
Replace Regulator. Refer to 6.7 Replacing Regulator,
page 27
Set the concentrator to 2 L/min. If the concentration
falls below 87% oxygen, replace the check valves.
Refer to 6.6 Replacing Check Valves, page 26.
Replace. Refer to 5.5 Replacing the Muffler Assembly,
page 14.
1. Leads to fan disconnected. Reconnect.
2. Replace. Refer to 6.11 Replacing Cooling Fan,
page 31.
Replace. Refer to 8.8 Checking Sieve Bed Pressure
IRC5PO2AW, page 46 or 8.9 Checking Sieve Bed
Pressure (Model IRC5PO2VAW Only) , page 47.
Repair or replace.
Check pressure at product tank. Pressure should rise
to 144.79 kPa (21 psi) at shift point. If not, replace
P. C. Board. Refer to 6.12 Replacing P. C. Board,
page 32.
1. Return flow to maximum setting.
2. Replace fitting.
3. Repair or replace. Refer to 6.15 Replacing
Flowmeter, page 35.
1. Replace P. E. valve. Refer to 6.4 Replacing P. E.
Valve, page 22.
2. Replace P. E. valve. Refer to 6.4 Replacing P. E.
Valve, page 22.
Replace P. C. board. Refer to 6.12 Replacing P. C.
Board, page 32.
Troubleshooting
51