♦ It will be necessary to replace any refrigerant circuit compo‐
nents that have come in contact wit the stop leak additive in
order to repair the A/C system properly. Certain refrigerant
circuit components may already be damaged by the stop leak
additive (for example, the A/C compressor regulator valve -
N280- ) or will get damaged if they are used over again and
will fail after a short amount of time. In addition to this, if there
is any sediment from the stop leak additive still in the circuit, it
could come loose at a later point and cause the A/C system to
fail again (currently it is not possible to clean these compo‐
nents with any workshop tools).
Working on the A/C system refrigerant circuit
♦ Service station, important usage information, refer to
⇒ page 82 .
♦ Servicing station, connecting for measuring and testing, refer
to
⇒ “2.4.5 Connecting for Measuring and Testing, One Service
Connection“, page 84 .
♦ Discharge refrigerant circuit using service station, refer to
⇒ “2.4.9 Draining Refrigerant Circuit“, page 87 .
♦ Discharging refrigerant circuit using service station, refer to
⇒ “2.4.11 Evacuating Refrigerant Circuit“, page 89 .
♦ Refrigerant circuit, charging with service station, refer to
⇒ “2.4.3 Charging Refrigerant Circuit“, page 83 .
♦ A/C system, operating after charging, refer to
⇒ “2.4.1 A/C System, Operating after Charging“, page 79 .
♦ Transferring refrigerant to reservoir (charging cylinder or res‐
ervoir bottle) of service station, refer to
⇒ “2.4.12 Transferring Refrigerant To Reservoir (Charging
Cylinder Or Reservoir Bottle) Of Service Station“, page 93 .
♦ Service station, draining, refer to
⇒ “2.4.10 Draining Service Station“, page 88 .
Service Station, Important Usage Information
Observe the following with regard to service station operation
(e.g. V.A.G 1885). Refer to Special Tools and Equipment Catalog:
– The filters and dryers installed must be replaced at the latest
on completion of the service life specified in the relevant op‐
erating instructions.
– If a service station is also used for flushing the refrigerant cir‐
cuit, dryer and filter must be replaced in shorter intervals. Refer
to
⇒ “1.4.12 Refrigerant Circuit Flushing With Compressed Air
and Nitrogen “, page 29 .
– Exclusive use is to be made of refrigerant oils which have been
approved for the vehicle-specific refrigerant circuit (if neces‐
sary, fill refrigerant oil directly into refrigerant circuit). Refer to
Electronic Parts Catalog (ETKA).
Extracted refrigerant is not to be reused if there is any doubt about
the composition of the refrigerant extracted, even after cleaning
in the service station.
– The service station is to be drained in all these cases, refer to
⇒ “2.4 A/C Service Station“, page 79 , the system cleaned if
necessary and the filters, dryers and refrigerant oil replaced.
– For example, within Germany, contaminated refrigerant can
be returned to the supplier in recycling containers for recycling
or for environmentally safe disposal. Other or additional reg‐
ulations may apply in other countries.
Audi 100 1991 ➤ , Audi 80 1992 ➤ , Audi A1 2011 ➤ , Audi A2 2001 ➤ , A ...
Refrigerant R134a Servicing - Edition 01.2011
82 Rep. Gr.00 - General, Technical Data
To Next Page
Loading...
