Maintenance
41
4.
While connecting the charge line to the adapter fitting on the compressor’s return gas
coupling, thoroughly purge the charge line from the regulator. It is important to remove all
air contaminants to prevent them from entering the system.
5.
Adjust the pressure regulator to 1520 kPa (220 psig). Open the valve on the adapter fitting
and charge the compressor to 1520 kPa (220 psig). If the adsorber is connected, increase
the charge pressure to 1650 - 1690 kPa (240 - 245 psig).
6.
Close the valve on the adapter fitting used for charging.
7.
Run the compressor for at least 30 minutes to heat the oil to operating temperature. Stop
the compressor.
8.
Adjust the pressure regulator to 690 kPa (100 psig).
9.
Open the vent valve on the supply coupling of the compressor. Watch the
compressor’s
pressure
gauge.
When the
pressure falls
to
35
to
70 kPa
(
5 to 10
psig),
close the vent valve.
Open the charge valve to increase the pressure to 690 kPa (100 psig). Close the charge
valve.
10.
Repeat Step 9 five-(5) times.
11.
Adjust the pressure regulator to the equalization pressure of the system. See
Specifications.
12.
Open the valve on the adapter fitting and charge the compressor to the equalization
pressure. Close the charge valve on the adapter fitting. Start the compressor.
13.
After running 30 to 45 seconds, stop the compressor. Open the vent valve and vent the
compressor to 35 to 70 kPa (5 to 10 psig). Close the vent valve.
14.
Repeat Steps 12 and 13 five-(5) times, then go to Step 15.
15.
Open the charge valve on the adapter fitting. Charge the compressor to the equalization
pressure. Close the charge valve.
16.
Allow the compressor to cool. Read the pressure gauge with the compressor at 20° C
(68° F). Adjust
the
equalization pressure by charging or venting to conform to the
Specifications.
17.
Close the gas cylinder valve and adjust the pressure regulator to zero psig.
18.
Disconnect the charge line from the adapter fitting. Store the charge line to keep it clean.
19.
Remove both adapter fittings.
NOTE
Reconnect the adsorber if it was disconnected prior to gas cleanup.
20.
If other components need cleaning, refer to the procedures in their technical manuals.
Otherwise, reconnect the supply and return gas lines
to the compressor. Torque the gas
line couplings
to 4.85 0.7 kgf m (35 ± 5 ft. lbs.).
21.
Leak check the Aeroquip couplings. See the Leak Check procedure.
This completes the gas cleanup procedure for the compressor.
Summary of Contents for HC-4E1
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Page 55: ...Troubleshooting 51 Figure 9 HC 4E1 Wiring Diagram...
Page 56: ...Troubleshooting 52 Figure 10 HC 4E2 Wiring Diagram...
Page 57: ...Troubleshooting 53 Figure 11 HC 4E1 Electrical Schematic...
Page 58: ...Troubleshooting 54 Figure 12 HC 4E2 Electrical Schematic...
Page 61: ...Parts 57 Figure 13 Parts Identification 18 21 19 13 14 20 16...