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5. Evacuate and dehydrate replacement compressor. Ensure

oil in compressor is at the proper level.

NOTE: Since most new and service compressors are

now shipped without oil in the crankcase, you must

check to see if there is oil. Adding or charging oil is usu-

ally easier prior to installing the compressor.

• If there is no oil, add the appropriate oil for the service.

Oil charges are listed in Sections 3.1 to 3.3.

• If there is oil, determine if it is compatible with the refrig-

erant. If the oil is not compatible, use the drain connection

to remove the oil. Dispose of the removed oil following

the appropriate environmental guidelines. Since the com-

pressor has not been run, a thorough draining is all that is

needed to remain within the limits of residual oil levels.

There is no need to “flush” the compressor with the

replacement oil. Once the oil is removed, add the appro-

priate oil (see above).

6. Place compressor in operation. After 2 to 4 hours of

operation, inspect compressor oil for discoloration and/

or acidity. If oil shows signs of contamination, replace

oil and filter-driers and clean the suction strainer.

NOTE: When testing for moisture and acidity, be sure

the test kit used is appropriate for the refrigerant (CFC,

HCFC, or HFC) and the oil (mineral, alkylbenzene, or

POE) in the system. Carrier’s Total Test Kit is accurate

for CFC and HCFC air-conditioning applications. If

used with POE oils, Total Test Kit will indicate acid, but

is not an accurate indicator of moisture.

7. Inspect oil daily for discoloration and acidity. If oil stays

clean and acid-free, the system is clean. If oil shows

signs of contamination, change oil, change filter-drier,

and clean suction strainer. If filter-drier or suction

strainer is dirty or discolored, repeat this step until sys-

tem is cleaned.

Carlyle 06D Service Manual

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