| If the refrigerant circuit was completely empty |
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| Remove air conditioner compressor. |
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| Remove oil drain screw from air conditioner compressor. |
Note! | t
| If the air conditioner compressor is a “Denso” (“Nippondenso”) type, in the oil drain screw there is a sealing ring instead of an O-ring; always renew this → Parts catalogue. |
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| To speed up the draining of the refrigerant oil, rotate the shaft of the air conditioner compressor using the magnetic clutch pulley. |
| t
| Pour old refrigerant oil out of the air conditioner compressor; Handling refrigerant oil, see Service Division/ServiceNet; Handbooks; Service Organisation Handbook; Volume 2, Environment; Emissions protection; Refrigerant from air conditioning systems / Refrigerant machine oils. |
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| Then fill the A/C compressor with the quantity of new refrigerant oil corresponding to the quantity in a genuine A/C compressor → Rep. Gr.87. |
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| Different types and quantities of refrigerant oils are required for different air conditioner compressors → Rep. Gr.87. |
| t
| 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. |
| t
| 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. |
| t
| Cleaning the refrigerant circuit with compressed air or nitrogen (purging) → Chapter. |
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| Renew receiver or reservoir and restrictor. |
| –
| Assemble the refrigerant circuit, evacuate it and charge it. |
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