| After purging refrigerant circuit of contaminants, e.g. due to moisture intrusion (because refrigerant circuit has stood open for a length of time) or due to dirt |
| The reservoir or receiver or cartridge of the dryer bag need not be renewed under the following circumstances: |
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| After an accident in which there was no damage to the reservoir or receiver. |
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| Repairs are performed quickly (no more delay than during a normal repair time) and there was no moisture intrusion. The vehicle is no more than 5 years old. |
| The reservoir or receiver or dryer cartridge should be renewed under the following circumstances: |
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| The refrigerant circuit was opened and the vehicle is more than 5 years old. |
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| The refrigerant circuit has been opened for in indeterminate period (seepage leak). |
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| Repairs take longer than a normal repair time and there has been moisture intrusion. |
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| Always renew collector/reservoir or dryer cartridge after blowing through with compressed air or purging with refrigerant R134a. Keep genuine parts sealed for as long as possible to keep the ingress of moisture as low as possible. |
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| The air conditioner compressor seizes. |
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| The reservoir or receiver is damaged (e.g. in an accident). |
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| Drain refrigerant circuit. |
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| Remove air conditioner compressor. |
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| Rectify cause of fault. |
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| Check expansion valve for dirt and corrosion; renew if necessary. |
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| Remove oil drain screw from air conditioner compressor. |
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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 poly V-belt pulley. |
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| Then fill the air conditioner compressor with a quantity of new refrigerant oil equal to the quantity in a genuine air conditioner compressor → Rep. gr.87. |
Note | t
| Types and quantities of refrigerant oils which should be used for different air conditioner compressors → Rep. gr.87. |
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| 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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