Recovery, Recycling, Charging & Adding Oil

Refrigerant oil must be added to the system when components are replaced, as follows:

1. All compressors (drain and measure oil).
A. Drain oil out both the suction and discharge ports of the replacement as well as the old compressor.
B. Remove compressor crankcase drain bolt and drain oil from compressor crankcase.
^ If less than 30 ml (1 oz.) is drained, add 60 ml (2 oz.) to the new compressor.
^ If more than 30 ml (1 oz.) is drained, add same amount that was drained to the new compressor.
^ Up to 120 ml (4 fluid ounces) of oil can collect in the crankcase. Therefore, it is important when replacing a compressor that the oil in the old compressor crankcase be drained and measured (discard the old oil after recording the amount).
C. Install compressor crankcase drain bolt.

Tighten
^ Tighten compressor crankcase bolt to 20 N.m (15 lb ft).

2. Accumulator.
^ Add 105 ml (3.5 oz.) to new accumulator.
3. Evaporator
^ Add 90 ml (3 oz.) oil.
4. Condenser.
^ Add 30 ml (1 oz.) oil.
5. Refrigerant oil loss due to a large leak:
^ If the refrigerant charge is abruptly lost due to a large refrigerant leak, approximately 90 ml (3 oz.) of refrigerant oil will be carried out of the system with the refrigerant. Any failure that causes an abrupt refrigerant discharge will experience this oil 1055. Failures that allow the refrigerant to seep or bleed off over time do not experience this oil loss.
^ Upon replacement of a component which caused a large refrigerant leak, add 90 ml (3 oz.) of refrigerant oil plus the required amount of oil for the particular component (as outlined above).

Add the oil directly to the replaced component if possible. If the oil cannot easily be added to the replaced part, add the oil to the accumulator.