Components (Except Compressor, Reservoir or Receiver) Leaking or Damaged

Components (Except Compressor, Reservoir Or Receiver) Leaking Or Damaged

Refrigerant circuit completely empty
- Remove malfunctioning component.
- Remove A/C compressor.
- Remove oil drain plug from compressor.

NOTE:
- The oil drain plug of "Denso" and "Nippondenso" compressors is equipped with an oil seal instead of an O-ring and this is always to be replaced Parts Catalog
- To accelerate drainage of refrigerant oil, rotate compressor by way of clutch plate of A/C clutch for example.
- Pour old refrigerant oil out of compressor, see HSO Environment Vol. 2-2. 43. 1.
- Then fill compressor with quantity of fresh refrigerant oil corresponding to quantity of refrigerant oil in replacement compressor
- Use different refrigerant oils and quantities for the various compressors.
- To ensure compressor lubrication on start-up, at least 80 cu.cm of refrigerant oil must be poured into the compressor, the remainder can be added for example to the new reservoir or receiver.
- If dirt has penetrated into the compressor with the refrigerant circuit open (e.g. after an accident), compressor is to be replaced.
- Clean (flush) refrigerant circuit with compressed air or nitrogen.

- Replace receiver or reservoir and restrictor.
- Assemble, evacuate and re-charge refrigerant circuit.

There is still refrigerant in the refrigerant circuit
- Discharge refrigerant circuit.
- Remove malfunctioning component, flush with compressed air, collect escaping refrigerant oil.
- The new component is to be filled with the amount of refrigerant oil flushed out (plus 20 cu.cm for evaporator, plus 10 cu.cm for condenser, refrigerant pipes and refrigerant hoses) as fresh refrigerant oil fill.
- Replace restrictor.
- Assemble, evacuate and charge refrigerant circuit.