Adding Refrigerant Oil

Adding Refrigerant Oil
FS compressors shipped as service replacements may or may not contain oil. During Compressor Replacement

NOTE
- The suction accumulator/drier and orifice tube should also be replaced when the compressor is replaced.

1. Prior to installing the replacement compressor, drain the refrigerant oil from the removed compressor into a clean calibrated measuring device.

To drain the oil, place the disc and hub assembly on the old compressor shaft so the shaft can be rotated.

Rotate the shaft by hand six to eight revolutions while pouring the oil from the ports. This effectively empties the compressor of oil.
2. Record the amount of oil removed from the old compressor.
3. If the new FS-10 compressor contains oil, drain the refrigerant oil from the new compressor following the procedure in Step 1 above. If the new FS-10 compressor has no oil, then the oil draining step will not be necessary.
4. Matching oil quantities.
If the amount of oil drained from the old compressor (Step 2) is between 85 and 142 ml (3 - 5 oz.), pour the same amount of clean refrigerant oil into the NEW compressor.
If the amount of oil drained from the old compressor (Step 2) is greater than 142 ml (5 oz.), pour 142 ml (5 oz.) of clean refrigerant oil into the NEW compressor.
If the amount of oil drained from the old compressor (Step 2) is less than 85 ml (3 oz.), pour 85 ml (3 oz.) of clean refrigerant oil into the NEW compressor.