PRO TECHNICIAN

Installation

Inspect A/C Compressor Oil

Compressor
Compressor oil
Condenser with modulator
Sight glass
Expansion valve
Evaporator
New A/C compressor
During A/C compressor operation, A/C compressor oil circulates in the A/C system. After the A/C compressor stops, some oil remains throughout the A/C system.
 
For this reason, the amount of oil in a replacement compressor should equal that found in the compresor to be repaced
 
New A/C compressors are already filled with the A/C compressor oil required for the complete A/C system. Therefore it may be necessary to drain any oil in excess of the volume found in the compressor to be replaced from the new compressor.

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