Refrigeration Maintenance
170
Perform an Oil Acid Test
Perform an oil acid test (refer to Tool Catalog for oil test kit) whenever a unit has a substantial refrigerant
loss, a noisy compressor or dark/dirty oil.
Isolate the Compressor
The discharge suction and digital ball service valves isolate the compressor from the high and low sides
of the refrigeration system.compressor isolation is needed for system diagnosis, service and repair.
NOTE: The valves are a permanently assembled unit and must be replaced in total if defective. The
only maintenance possible on the discharge or suction service valve is to periodically tighten the
packing nut or to replace the packing.
•
Back Seated: Normal operation position.
•
Open to Service Port: Position for servicing.
•
Front Seated: To check or remove compressor.
1.
Internal Threads for Cap
2.
High Pressure Fitting
3.
Low Pressure Fitting
Figure 146: Service Fittings Specifications
WARNING: Do not start unit with
discharge valve in Front Seated position.
AXA0175
Summary of Contents for 098203
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Page 3: ...MAGNUM TK 60275 4 MM Rev 3 08 15 Copyright 2012 Ingersoll Rand EMEIA Printed in Ireland...
Page 193: ...Refrigeration Maintenance 191 Figure 163 Filter Drier...
Page 200: ...Refrigeration Maintenance 198 Figure 169 Receiver Tank Figure 170 Water Cooled Condenser Tank...
Page 257: ...255 Schematic Diagram RELEASED 19 Sep 2013...
Page 258: ...256 Wiring Diagram Page 1 of 2 RELEASED 19 Sep 2013...
Page 259: ...257 Wiring Diagram Page 2 of 2 RELEASED 19 Sep 2013...
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