Volkswagen Golf Service & Repair Manual: If the refrigerant circuit was completely empty
| – |
Remove air conditioner compressor. |
| – |
Remove oil drain screw from air conditioner compressor. |
 Note
| To speed up the draining of the refrigerant oil, rotate the
shaft of the air conditioner compressor by hand using the poly
V-belt pulley or the magnetic clutch. |
| Pour old refrigerant oil out of air conditioner compressor,
handling refrigerant oil
→ Volkswagen ServiceNet; Service handbook; Environmental
protection; Waste disposal; Current situation; Disposal
channels; Disposal of used oils; Refrigerant oils. |
| Then fill the air conditioner compressor with the quantity
of new refrigerant oil corresponding to the quantity in a
genuine air conditioner compressor
→ Rep. gr.87. |
| Different types and quantities of refrigerant oils are
required for different air conditioner compressors
→ Rep. gr.87. |
| To ensure proper lubrication of the air conditioner
compressor when it runs for the first time, the air conditioner
compressor must be filled with at least 80 cm3
of refrigerant oil; the remainder can be poured into the new
reservoir or receiver
→ Rep. gr.87. |
| If dirt enters the air conditioner compressor whilst the
refrigerant circuit is open (e.g. after an accident), the air
conditioner compressor should be renewed. |
| Blow through refrigerant circuit with compressed air and
remove moisture with nitrogen
→ Chapter. |
| – |
Renew receiver or reservoir and restrictor. |
| – |
Assemble the refrigerant circuit, evacuate it and charge it. |
|
|
|
Drain refrigerant circuit.
–
Remove defective part, purge with compressed air and collect
escaping refrigerant oil.
...
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If there is still refrigerant in the refrigerant circuit