Compressor HVAC: Service Precautions

CAUTION:
- The following applies when replacing a compressor. Drain and measure the quantity of oil in the original condenser. Also drain the new compressor completely. The new unit should then be filled with the same quantity of oil as that drained from the original unit.

- Check the type of refrigerant used in the A/C system. This is important to avoid mixing refrigerants, resulting in damage to the compressor and other equipment.

- The compressor should always contain at least 50 ml (0.0528 qt) of oil regardless of the quantity drained.

If x ml (qt) have been drained fill with x ml (qt)
70 ml (0.0739 qt) 70 ml (0.0739 qt)
30 ml (0.0317 qt) 50 ml (0.0528 qt)
50 ml (0.0528 qt) 50 ml (0.0528 qt)
15 ml (0.0158 qt) 50 ml (0.0528 qt)