High Pressure Test; Oxygen Sensor - Invacare Perfecto2 IRC5PO2AW Service Manual

Invacare® Perfecto₂™ Oxygen Concentrator

8.5 High Pressure Test

Only the AW model is shown. The high pressure test is performed in the same manner for the VAW model
Capacitor and the PE valve are not shown.
If any alarm fails to perform to specification, contact Invacare Technical Service.
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High Pressure - Occurs when pressure in product tank rises beyond a preset value, typically 158.58 kPa ± 6.89 kPa (23 psi ± 1 psi.).
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Main Valve Coil - Alarm sequence occurs when the main valve coil, connection or P.C. board circuitry has failed.
1. Turn power Off (O) and unplug the unit.
2. Remove cabinet. Refer to 6.1 Removing Cabinet, page 17.
3. Plug in unit.
4. Turn the concentrator On (I).
With the unit running and flow set at approximately 5 L/min., disconnect in-line connector A shown above.
5.
6. The main valve coil alarm should activate within 40 seconds. The front red panel light will illuminate with a continuous audible alarm.
7. Reconnect in-line connector.

8.6 Oxygen Sensor

Alarm sequence occurs when concentration levels fall below a preset value, typically 73% ± 3% or 85% ± 2%.
1. Turn power Off (O) and unplug the unit.
2. Remove cabinet. Refer to 6.1 Removing Cabinet, page 17.
3. Plug in unit.
4. Turn unit On (I ). Set output flow at approximately 5 L/min.
5. Monitor the O level.
2
6. With the O level greater than 85% after five minutes, the GREEN panel indicator light will remain illuminated.
2
7. Slowly adjust flow beyond maximum rated flow until you can achieve a concentration level greater than 75% but less than 84%. Within 30
minutes the YELLOW panel indicator light will illuminate and the unit will continue to run.
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