Invacare Perfecto2IRC5PO2AW Service Manual page 85

4. Check each connection to make sure it is tight.
5. Turn the concentrator On ( ).
NOTE: Adjust the concentrator to MAXIMUM rated liter flow to 5 L/min.
NOTE: 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 to144.79 kpa ± 2.07 kPa
(21 p.s.i.g. ± 0.3 p.s.i.g.) 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 p.s.i.g. ± 2 p.s.i.g.) before rising within 20 seconds to 144.79 kpa ± 2.07 kPa (21
p.s.i.g. ± 0.3) and shift the 4-way valve to the opposite sieve bed.
8. If pressure reading is 144.79 kpa ± 2.07 kPa (21 p.s.i.g. ± 0.3 p.s.i.g.) 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 Troubleshooting on page 15.
10. Turn the concentrator off (O).
11. Disconnect pressure gauge from the HomeFill port and reinstall plug.
Plug
Part No 1154245
SECTION 25—SIEVE BED PRESSURE CHECK
Back of
Concentrator
HomeFill Port
FIGURE 25.2 Pressure Testing
85
Pressure
Gauge
¼ x 2-inch
Silicone Tubing
with Connector
Perfecto ™
2