Volkswagen Golf Service & Repair Manual: Searching for leaks in refrigerant circuits using leak detector -V.A.G 1796

Volkswagen Golf Service & Repair Manual / Air conditioning system with refrigerant R134a / Detecting leaks in refrigerant circuit / Searching for leaks in refrigerant circuits using leak detector -V.A.G 1796

Note

Small leaks can be detected with, for example, an electronic leak detector.

–	Evacuate refrigerant circuit using an air conditioner service station → Chapter.

Note

If a larger leak is detected during the evacuation process, determine cause and rectify as described → Chapter.

If during the evacuation process no leak is detected or a very small leak is detected that but cannot be located, proceed as follows → Chapter.

Refrigerant gas is quickly dispersed by air motion. Therefore drafts must be avoided during a search for leaks.

If the refrigerant circuit is completely empty, charge with about 10% of refrigerant capacity (sticker R134a or vehicle-specific workshop manual).

Leak detection:

–	Prepare leak detector for operation according to its operating instructions.

–	Always hold probe tip under location of suspected leak.

If the rate of clicks rises or a howl occurs, depending on model, a leak has been found (see operating instructions for leak detector).

Searching for leaks in refrigerant circuits using leak detector -V.A.G 1796

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