Note: Minor leaks can be detected, for example, using an electronic detector.
1. Evacuate the refrigerant circuit using a stand for servicing air conditioning systems.
Note.
- If a relatively large leak is detected during vacuuming, the leak should be found and eliminated.
- If no leak is detected during vacuuming, or if the leak is so small that it is impossible to find the leak, proceed as follows.
- Gaseous refrigerant is quickly carried away by air currents. Therefore, when searching for a leak, avoid drafts.
- If the circulation circuit is completely empty, fill it with refrigerant to approximately 10% of the filling capacity (see R134a label or repair manual for the vehicle in question).
Leak detection
1. Prepare the leak detector for operation, see the device manual.
2. Place the test probe under the suspected leak location.
3. If the frequency of clicks increases or a characteristic sound signal is emitted (depending on the design of the device), leak location found (see the leak detector operating manual).
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