Invacare Perfecto 2 SeriesIRC5PO2AW Service Manual page 92

SECTION 25—SIEVE BED PRESSURE CHECK
3. Connect ¼ x 2-inch silicone tubing with connector to HomeFill port.
4. Check each connection to make sure it is tight.
5. Turn the concentrator On ( ).
6. Adjust the concentrator to MAXIMUM rated liter flow to 5 L/min.
7. Wait approximately five minutes to allow system pressures to achieve proper
equilibrium before testing.
NOTE: 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.
NOTE: 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 16.
10. Turn the concentrator off ( ).
11. Disconnect pressure gauge from the HomeFill port and reinstall plug.
Plug
Perfecto ™
2
Back of
Concentrator
HomeFill Port
FIGURE 25.2 Pressure Testing
92
Pressure
Gauge
¼ x 2-inch
Silicone Tubing
with Connector
Part No 1154245