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Table of Contents
Operation Section ........................................................................................................
41
OIL SYSTEM ........................................................................................................................................................................................... 43
Non-Vilter Oil Notice ...................................................................................................................................................................... 42
Oil Charge ....................................................................................................................................................................................... 43
Oil Filter ........................................................................................................................................................................................... 43
Filter Removal and Installation, all VSR Units. ............................................................................................................................. 43
Filter Removal, VSS and VSM Units .............................................................................................................................................. 44
Filter Removal, VSS and VSM Units . ........................................................................................................................................... 44
Oil Pressure Regulating ................................................................................................................................................................... 45
Oil Cooling ....................................................................................................................................................................................... 45
Water Cooled Oil Cooler .................................................................................................................................................................. 45
Liquid Injection Oil Cooling. ........................................................................................................................................................... 46
V-PLUS Oil Cooling System ............................................................................................................................................................ 46
Thermosyphon Oil Cooling .............................................................................................................................................................. 47
CONTROL SYSTEM .............................................................................................................................................................................. 47
Screw Compressor Control And Operation ..................................................................................................................................... 47
Starting, Stopping and Restarting the Compressor ......................................................................................................................... 47
Slide Valve Control .......................................................................................................................................................................... 48
Slide Valve Motor Location ............................................................................................................................................................. 49
Oil Separator Heater ......................................................................................................................................................................... 49
Econ-O-Mizer Controls ................................................................................................................................................................... 49
Safety Setpoints ................................................................................................................................................................................ 49
Oil Pressure ...................................................................................................................................................................................... 49
Discharge Pressure ........................................................................................................................................................................... 49
Suction Pressure ............................................................................................................................................................................... 50
Oil Filter Differential ....................................................................................................................................................................... 50
Oil Temperature ............................................................................................................................................................................... 50
Discharge Temperature .................................................................................................................................................................... 50
INITIAL START-UP ................................................................................................................................................................................. 50
Setting of Controls ........................................................................................................................................................................... 50
Valve Settings ................................................................................................................................................................................... 50
Oil Separator .................................................................................................................................................................................... 50
V-PLUS Oil Cooling ........................................................................................................................................................................ 51
Liquid Injection Oil Cooling ............................................................................................................................................................ 51
Compressor Pre Start-Up Check List .............................................................................................................................................. 51
Stop Check Operation ...................................................................................................................................................................... 52
Pre-Start Up ...................................................................................................................................................................................... 53
PRE START-UP CHECKLIST - FIELD PIPING AND MECHANICAL REQUIREMENTS .............................................................. 54
PRE START-UP CHECKLIST - FIELD WIRING REQUIREMENTS ................................................................................................. 55
Service Section .............................................................................................................
56
GENERAL COMMENTS ........................................................................................................................................................................ 58
PREPARATION OF UNIT FOR SERVICING ........................................................................................................................................ 58
REMOVAL OF COMPRESSOR FROM THE UNIT ............................................................................................................................ 58
INSTALLATION OF THE COMPRESSOR ............................................................................................................................................ 59
LEAK CHECKING UNIT ........................................................................................................................................................................ 59
ANNUAL INSPECTION ......................................................................................................................................................................... 60
NORD-LOCK WASHERS ....................................................................................................................................................................... 61
GATE ROTOR ASSEMBLY .................................................................................................................................................................... 62
REMOVAL (All VSS and VSR Models) ................................................................................................................................................. 62
REMOVAL (ALL VSM MODELS) ......................................................................................................................................................... 64
INSTALLATION (All VSS and VSR Models) ........................................................................................................................................ 66
INSTALLATION (All VSM Models) ...................................................................................................................................................... 68
Summary of Contents for VSM 71-701
Page 1: ...1 VPN 35391S February 2006 Rev 05 Price 60 00...
Page 2: ...2...
Page 20: ...20...
Page 52: ...53 Pre Start Up Check List...
Page 99: ...99 Recommended Spare Parts List...
Page 104: ...104 Gate Rotor...
Page 110: ...110 Main Rotor VSS...
Page 112: ...112 Main Rotor VSR...
Page 114: ...114 Slide Valve Cross Shafts and End Plate...
Page 118: ...118 Capacity Slide Volume Slide Carriage Assembly Slide Valve Carriage Assembly...
Page 134: ...134 Miscellaneous Frame Components VSS Screw Compressor VSR Mini Screw Compressor...
Page 138: ...138 C FlangeAdapter Components 630 620 610 640 601 641 630 601 620 610 640 641 642 650 651...
Page 140: ...140 Replacement Parts Tools...
Page 144: ...144 GaterotorAssembly...
Page 148: ...148 Main Rotor Slide Valve Cross Shafts and End Plate Models 71 401 Only Counter clockwise...
Page 152: ...152 Main Rotor Slide Valve Cross Shafts and End Plate Model 501 701 Only Clockwise...
Page 154: ...154 Volume Ratio Capacity Slide Carriage Assembly Slide Valve Carriage Assembly...
Page 158: ...158 Miscellaneous Frame Components Model VSM 501 701 Model VSM 71 401...
Page 160: ...160 Replacement Parts Accessories Housing Accessories C Flange Assembly...
Page 166: ...166 Haight Pumps...
Page 170: ...3 Refrigerating Specialties Division...
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Page 244: ...168...