system immediately. Excessive sweating or frosting of the suction line and/or compressor body must be
corrected.
• Check for any refrigerant oil leaks. Repair as needed.
• Check compressor mounting bolts are tight.
• Visual check compressor rubber shock mounts for any wear, excessive displacement or damage. Repair as
needed.
• Check crankcase heater and wires for wear or damage. Replace or repair if needed.
7.18.2 Fixed Speed Scroll Compressor Replacement
NOTICE. Disconnect all remote electrical power sources to the unit. Failure to
follow these guidelines could result in serious injury or death. Electrical shock
hazard exists. Use lock-out tag-out protection. Wear protective goggles and
wear as required per your local codes. System contains oil and refrigerant under
pressure.
NOTICE. When reclaim, charging and refrigerant handling, follow the EPA and
related environmental protection codes including local and national codes.
Service technicians must maintain all required permits.
Contact Data Aire Service Department prior to replacing scroll compressor if you have any questions on replacing
compressor.
This is only for guideline and reference only. This will vary due to variations with compressor cooling capacity size
and configuration (voltage, refrigerant type, etc.). Also, may vary due to product improvement or due to special job
specifications. This does not apply to field supplied compressor, special order compressors, tandem or variable
speed compressors. This only applies to replacing with the same manufacture, model, voltage, phase, hertz, size
and configuration as the original compressor. Identity the cause of compressor failure and make sure that you have
taken the proper corrective and preventive action before replacing the compressor.
1. Disconnect all remote electric power source to unit before maintenance or servicing. Be sure to disconnect
of wires to the crankcase heater.
2. Remove all compressor and fan motor fuses for safety reasons. Remember to replace after finish with
change out.
3. Disconnect electrical connections from the compressor.
4. Refrigerant must be recovered from both the suction and discharge sides of the compressor. Proper
recovery procedures must be followed, and the refrigerant must be recovered with an EPA-approved
recovery unit. Do not attempt to remove the refrigerant lines from the compressor until you have verified
that the refrigerant has been removed from the entire system.
5. Tubes should be cut with a tubing cutter close to the compressor. Do not use a torch or brazing method to
disconnect the compressor or tubes.
6. To disconnect refrigerant lines, heat joint areas 2 and 3 slowly and uniformly until braze material softens
and the tube can be pulled out of suction fitting.
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