| After purging refrigerant circuit, e.g. due to moisture intrusion (because refrigerant circuit has stood open for a length of time) or due to dirt |
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| Evacuate refrigerant circuit. |
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| Remove air conditioner compressor. |
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| Rectify cause of fault. |
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| Clean (purge) the refrigerant circuit with compressed air and nitrogen → Chapter. |
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| Examine the expansion valve for dirt or corrosion; renew if necessary. |
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| Remove oil drain screw from air conditioner compressor. |
Note! | If the air conditioner compressor is from “Denso/Nippondenso”, there is a sealing ring instead of an O-ring in the oil drain screw; 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. |
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| Pour old refrigerant oil out of air conditioner compressor. For instructions on handling refrigerant oil see SEAT After Sales; ServiceNet; SEAT ServiceNet; handbooks; SOH; Environment; Volume 2, Emissions protection; Refrigerant from air conditioning systems / refrigerant oils. |
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| Then fill the A/C compressor with a quantity of new refrigerant oil equal to the quantity in a genuine A/C compressor → Rep. Gr.87. |
Note! | t
| Types and quantities of refrigerant oils which should be used 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. |
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| 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. |
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| Renew receiver or reservoir and restrictor. |
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| Assemble refrigerant circuit, evacuate and charge. |
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