Checking Sieve Bed Pressure Irc5Po2Aw - Invacare Perfecto2 IRC5PO2AW Service Manual

Invacare® Perfecto₂™ Oxygen Concentrator

8.8 Checking Sieve Bed Pressure IRC5PO2AW

DANGER!
– To prevent electrical shock, ALWAYS disconnect concentrator from electrical outlet before servicing.
Disassembly
1. Turn power Off (O) and unplug unit.
2. Remove cabinet. Refer to 6.1 Removing Cabinet, page 17.
Pressure Testing
Connect pressure gauge to the ¼ x 2-inch silicone tubing A with connector (p/n 1131392).
1.
Remove plug B in HomeFill port C in back of concentrator D.
2.
Connect ¼ x 2-inch silicone tubing with connector E to HomeFill port.
3.
4. Check each connection to make sure it is tight.
5. Turn the concentrator On (I).
Adjust the concentrator to MAXIMUM rated liter flow to 5 L/min.
Wait approximately five minutes to allow system pressures to achieve proper equilibrium before testing.
6. The pressure in the concentrator should rise within 20 seconds to 144.79 kPa ± 2.07kPa (21 psi ± 0.3 psi) and shift the 4-way valve to
the opposite sieve bed.
7. After the 4-way valve shift, the pressure in the concentrator will drop to 82.74 ± 13.79(12 psi ± 2 psi) before rising within 20 seconds to
144.79 kPa ± 2.07kPa (21 psi ± 0.3 psi) and shift the 4-way valve to the opposite sieve bed.
8. If pressure reading on pressure gauge F is 144.79 kPa ± 2.07kPa (21 psi ± 0.3 psi) when both valve shifts are made, proceed to STEP 10.
9. If pressure in the concentrator does not fall into the specifications listed above, refer to 8.1 Leak Test, page 41.
10. Turn the concentrator Off (O).
11. Disconnect pressure gauge from the HomeFill port and reinstall plug.
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