| Leak detection system -VAS 6201- |
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| The air conditioning system must be operated for at least 60 minutes so that the added leak detection additive is distributed in the complete refrigerant circuit (the compressor must run or must be activated). |
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| Depending on the size and the area of the leak, it might take several days until enough refrigerant oil escapes with the additive and the leak point becomes visible. |
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| In case of leaks on the evaporator, the additive is perhaps washed up by the condensation water and escapes through the condensation water drain. On most vehicles the evaporator is not accessible without extensive preliminary work, therefore if a test is carried out e.g. on the condensation water drain, leaks can be detected on the evaporator. To do so, the leak detection additive should be present in the refrigerant circuit for a lengthy period (several days). |
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| The leak detection additive can remain in the refrigerant circuit. |
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