Compressor Oil Balancing

COMPRESSOR OIL BALANCING

DRAINING PROCEDURE
1. Drain the oil from both the suction and discharge ports of the removed compressor into a clean, graduated container.Rotate the compressor shaft to assist in draining the compressor.

IMPORTANT: Drain and measure as much of the refrigerant oil as possible from the removed compressor.




2. Measure and record the amount of oil drained from the removed compressor.This measurement will be used during installation of the replacement compressor.
3. Inspect the polyalkylene glycol (PAG) oil for the following conditions:
- The color of the oil is dark brown or black.
- There is a presence of foreign substances, metal fillings, etc. in the oil.If the receiver-dehydrator is not replaced, damage to A/C compressor will occur.

IMPORTANT: During the oil removal procedure, the condition of the oil should be evaluated. Compressor oil never breaks down unless something is wrong with the compressor or air conditioning (A/C) system. If one or more of the following conditions exist, replace the compressor and receiver dehydrator.

4. Properly discard the used refrigerant oil.

BALANCING PROCEDURE
1. The replacement compressor is shipped with 120 ml (4.0 oz) of refrigerant oil.

IMPORTANT: The refrigerant oil in the A/C system must be balanced during compressor replacement.




2. Compare the amount of refrigerant oil recorded during compressor removal to the amount of refrigerant oil shipped in the replacement compressor. If the amount of refrigerant oil drained and recorded from the removed compressor is:
- Less than 120 ml (4.0 oz), leave the 120 ml (4.0 oz) in the replacement compressor.
- More than 120 ml (4.0 oz), add to the compressor the difference between the 120 ml (4.0 oz) and the amount drained.