Volkswagen Polo Service & Repair Manual: Empty Refrigerant Circuit
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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. |
|
|
|
Discharge the refrigerant circuit.
–
Remove malfunctioning component, flush with compressed air,
collect escaping refrigerant oil.
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