Audi Q5 2008 - Transferring Refrigerant to Reservoir (Charging Cylinder or Reservoir Bottle) of Service Station

Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
– Add 100 grams of refrigerant to the circuit, find the location of
the leak using an electronic leak detector and repair it. Refer
to
⇒ “4.2.2 Refrigerant Circuit, Tracing Leaks Using Electronic
Leak Detector V.A.G 1796“, page 144 . Or add UV contrast
dye to the refrigerant and find the location of the leak with the
leak detection system VAS 6201 and repair it. Refer to
⇒ “4.2.3 Refrigerant Circuit, Tracing Leaks Using Leak Detec‐
tion System VAS 6201“, page 144 .
– Empty the refrigerant circuit, if necessary. Refer to
⇒ “2.4.9 Draining Refrigerant Circuit“, page 87 .
– Evacuate and check the vacuum display again over several
hours. Only when the vacuum is maintained can the refrigerant
circuit be charged.
2.4.12 Transferring Refrigerant To Reservoir
(Charging Cylinder Or Reservoir Bottle)
Of Service Station
• The work procedure is always to be performed as described
in the operating instructions for the A/C service station.
• A certain quantity of refrigerant is specified as charge for each
air conditioning system. To ensure that neither too much nor
too little refrigerant is added (either would reduce the cooling
output), the charging cylinder has a scale indicating the
weight.
• The volume of a refrigerant changes as a function of pressure.
The scale must therefore be set according to the pressure in
the charging cylinder.
Note
Do not completely drain the reservoir (charging cylinder or bottle)
as the liquid column boundary layer cannot be traced in the tube
during filling (outside visible range).
WARNING
Do not overfill. A completely filled reservoir (charging cylinder
or bottle) will explode when the temperature rises.
Audi 100 1991 ➤ , Audi 80 1992 ➤ , Audi A1 2011 ➤ , Audi A2 2001 ➤ , A ...
Refrigerant R134a Servicing - Edition 01.2011
2. Description and Operation 93