Volkswagen Polo Service & Repair Manual: Empty Refrigerant Circuit

Volkswagen Polo Service & Repair Manual / Refrrigerant R134a Servicing / Components, Replacing / Leaking or Damaged Components except A/C Compressor, Reservoir or Receiver/Dryer / Empty Refrigerant Circuit

–	Remove malfunctioning component.

–	Remove the A/C compressor.

–	Remove oil drain plug from A/C compressor.

Note

To speed up refrigerant oil drainage, turn A/C compressor by hand via ribbed belt or magnetic clutch plate.

Pour the used refrigerator oil out of the A/C compressor.

Then fill the A/C compressor with quantity of fresh refrigerant oil corresponding to quantity of refrigerant oil in original part compressor. Refer to → Rep. Gr.87.

Use different refrigerant oils and quantities for the various compressors. Refer to → Rep. Gr.87.

To ensure the compressor is lubricated at start-up, at least 80 cm³ of refrigerant oil must be poured into the compressor. The remainder can be added to the new reservoir or receiver/dryer. Refer to → Rep. Gr.87.

If dirt has penetrated into the compressor with the refrigerant circuit open (for example after an accident), compressor is to be replaced.

Flush the refrigerant circuit with compressed air and remove moisture with nitrogen. Refer to → Chapter „Refrigerant Circuit, Flushing with Compressed Air and Nitrogen“.

–	Replace receiver/dryer or accumulator and restrictor.

–	Assemble, evacuate and recharge refrigerant circuit.

Leaking or Damaged Components except A/C Compressor, Reservoir or Receiver/Dryer

...

Refrigerant Still in Circuit

Discharge the refrigerant circuit. – Remove malfunctioning component, flush with compressed air, collect escaping refrigerant oil. ...

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