New Compressor

New Compressor

Drain and discard the transit lubricating oil from the new compressor before it is be fitted.

To avoid over-filling the system, an allowance must be made for the quantity of oil found in the original compressor and the quantity deposited in the recovery equipment oil separator from the charge recovery operation.

Typical example:
- Drained from original compressor - 50 ml.
- Recovered from oil separator - 40 ml.
- Quantity to be put in new compressor - 50 + 40=90 ml.

The difference between the combined total quantity of recovered and drained oil and the nominal capacity of the system (180 ml), is due to the quantity of oil remaining in components such as the condenser, suction accumulator/drier or evaporator. This oil is not normally recoverable.

The same procedure may be followed if a problem has occurred due to oil leakage, as the amount of oil lost is generally small. If the recovery process has not been necessary, because refrigerant has also been lost, then only the quantity drained from the original compressor needs to be replaced.