Sumitomo HC-4A - Page 4

TABLE OF CONTENTS
(continued)
ii
Page
MAINTENANCE ......................................................................................................... 33
Air Filter Cleaning or Replacement .................................................................. 34
Adsorber Replacement .................................................................................... 34
Adsorber Removal ..................................................................................... 34
Adsorber Installation .................................................................................. 35
Used Adsorber Venting and Disposal ........................................................ 36
Helium Charging and Venting .......................................................................... 36
Helium Charging Procedure ........................................................................ 36
Helium Venting Procedure to Adjust the Equalization Pressure ................. 37
Helium Venting Procedure to Vent to Atmospheric Pressure ..................... 38
Gas Cleanup ................................................................................................... 38
Helium Leak Check .......................................................................................... 40
Helium Leak Repair ......................................................................................... 40
Coolant System Leak Repair ............................................................................. 41
Replace the Compressor Shell High Temperature Switch ................................. 42
Replace Fuses .................................................................................................. 43
TROUBLESHOOTING ................................................................................................ 45
Automatic Shutdown ........................................................................................ 45
Troubleshooting Guide .................................................................................... 46
Compressor Capsule ....................................................................................... 49
Winding Continuity, Grounding and Resistance Checks ............................. 49
Current Measurement ................................................................................ 50
Fan and Circulator ........................................................................................... 51
Winding Continuity, Grounding and Resistance Checks – Fan and
Circulator Motors ........................................................................................ 51
PARTS ....... ............................................................................................................... 59
Ordering .......................................................................................................... 59
Compressor Parts Identification and Numbers ................................................. 59
Adapter Fittings ............................................................................................... 65
Cables ............................................................................................................. 66
ILLUSTRATIONS LIST
Figure 1 HC-4A Zephyr
®
Series Flow Diagram .............................................. 9
Figure 2 HC-4A Zephyr
®
Outline Dimensions and Parts Identification .......... 13
Figure 3 HC-4A2 Zephyr
®
Outline Dimensions and Parts Identification ........ 14
Figure 4 Connections for Mains Power Supply ............................................ 25
Figure 5 Connect Gas Line to Compressor or Manifold ................................ 27
Figure 6 Compressor Shell High Temperature Switch ................................... 43
Figure 7 Compressor Terminals ................................................................... 50
Figure 8 HC-4A Wiring Diagram (Main Electrical Chassis and
Components) ................................................................................ 53
Figure 9 HC-4A2 Wiring Diagram (Main Electrical Chassis and
Components) ................................................................................ 54
Figure 10 HC-4A and HC-4A2 Wiring Diagram (Air-Cooled Unit) ................... 55
Figure 11 HC-4A Electrical Schematic ........................................................... 56