PRINCIPLES OF OPERATION
9
The compressor continuously draws low-pressure helium from the system return line.
It compresses, cools and cleans the gas, then delivers it through the system gas supply line
to the cold head. See Figure 1.
1.
Oil Injection Filter
11.
Gas Supply Pressure Gauge
2.
Oil Injection Orifice
12.
Gas Equalization Solenoid Valve
3.
Heat Exchanger
13.
Gas Supply Coupling
4.
Compressor Capsule
14.
Gas Return Coupling
5.
Oil Separator
15.
Water Supply Fitting
6.
Oil Capillary Filter
16.
Water Return Fitting
7.
Oil Capillary
17.
Pressure Relief Valve
8.
9.
Adsorber
Internal By-pass Orifice
18.
Temperature Switches (water, oil,
gas and compressor shell)
10.
Surge Bottle
19.
Internal Relief Valve
Figure 1 HC-4E Flow Diagram
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...