⇒ “4.2.2 Refrigerant Circuit, Tracing Leaks Using Electronic
Leak Detector V.A.G 1796“, page 144 .
♦ Leak detection on refrigerant circuit using leak detection sys‐
tem VAS 6201. Refer to
⇒ “4.2.3 Refrigerant Circuit, Tracing Leaks Using Leak Detec‐
tion System VAS 6201“, page 144 .
4.2.2 Refrigerant Circuit, Tracing Leaks Using
Electronic Leak Detector V.A.G 1796
Caution
To prevent more refrigerant than is necessary for the leak test
from venting into the air, proceed as follows with the refrigerant
circuit completely empty:
– Evacuate the refrigerant circuit with the A/C service station.
Refer to ⇒ “2.4.11 Evacuating Refrigerant Circuit“, page 89 .
Note
♦
If a larger leak is found during evacuation, find and it and repair
it as described. Refer to
⇒ “2.4.11 Evacuating Refrigerant Circuit“, page 89 .
♦
If no leak is found during evacuation or there is a leak that is
so small that the location cannot be found, proceed as follows.
– Fill the evacuated refrigerant circuit with approximately 1000
grams of refrigerant.
Leak Detection
– Start up leak detector in line with relevant operating instruc‐
tions.
– Always hold test probe beneath suspected leak.
Depending on the model, leak detection is indicated by an in‐
crease in clicking rate or a warning tone (refer to operating in‐
structions for leak detector).
Note
♦
Currents of air quickly disperse refrigerant gas. Draughts must
therefore be avoided during leak detection.
♦
Refrigerant gas is heavier than air and will escape.
4.2.3 Refrigerant Circuit, Tracing Leaks Using
Leak Detection System VAS 6201
Special tools and workshop equipment required
♦ Leak Detection System -VAS 6201-
♦ Hand Pump With Low Pressure Hose -VAS 6201/1-
♦ Cartridge -VAS 6201/2-
♦ Cleaning Agent -VAS 6201/3-
♦ UV leak detection lamp -VAS 6201/4-
Audi 100 1991 ➤ , Audi 80 1992 ➤ , Audi A1 2011 ➤ , Audi A2 2001 ➤ , A ...
Refrigerant R134a Servicing - Edition 01.2011
144 Rep. Gr.00 - General, Technical Data
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