85
Service
4.20
REMOVAL AND INSTALLATION
OF CAPACITY OR VOLUME RA
TIO ACTUATORS (PRIOR TO 11-
1-
01 AND AFTER 5-1-95
The capacity and volume ratio control assemblies
with their potentiometers are not interchangeable
and must not be switched when they are re-in-
stalled on the compressor. The following steps
are used to remove the control assemblies that
utilize a potentiometer that were manufactured
or retrofitted between 5-1-95 and 11-1-01.
NOTE:
The capacity and volume control motors are
equipped with a brake. If it is necessary to oper-
ate the control motors manually, the brake must be
disengaged. The brake can be disengaged by
pushing on the motor shaft on the cone end. The
shaft should be centered in its travel. Do not use
excessive force manually operating the motor or
damage may result.
4.21
REMOVAL
A) Prepare the compressor for servicing as out-
lined in section 0.01.
B) Remove the six screws from the cover. Re-
move the cover for the slide valve actuator.
Mark and disconnect the wires to the slide
valve control actuator and potentiometer.
C) Remove the four hex bolts and Nord-Lock
®
washers holding the slide valve control mo-
tor assembly in place. The motor can now
be removed.
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 237: ......
Page 238: ......
Page 243: ......
Page 244: ...168...