Connection With Low-Pressure Valve
1 - Socket with an external thread and groove for the O-ring
(soldered in).
2 - O-ring (version and identification: black or colored. Refer to
the Electronic Parts Catalog.
3 - Valve with an internal thread
4 - Cap seal
5 - Sealing cap
Note
♦
Install the hand wheel for the service coupling just far enough
into the quick-release coupling adapter until the valve is se‐
curely opened inside the service connection (pay attention to
the pressure gauge, do not put too much pressure on the
valve).
♦
for removing and installing the valve -B- when the refrigerant
circuit is evacuated, for example, use an adapter from the
Socket for A/C valves -T10364- .
♦
There are different versions of these valves (with internal or
external threads). The tightening specifications will also differ.
The valves -3- with an M12 x 1.25 mm internal thread have a
tightening specification of 9 Nm +- 1 Nm.
♦
There are different versions of these valves, valve inserts and
their caps. Be sure to use the right versions. Refer to the Elec‐
tronic Parts Catalog (ETKA).
2.1.6 Evaporator
The fluid refrigerant evaporates in the evaporator pipe coils. The
heat required for this is extracted from the air flowing on the evap‐
orator ribbing. The air cools off. Refrigerant evaporates and is
extracted with the absorbed heat by the A/C compressor.
A defined amount of refrigerant is supplied to the evaporator by
a restrictor or expansion valve. In systems with expansion valve,
the throughput is regulated so that only gaseous refrigerant es‐
capes the evaporator outlet.
Audi 100 1991 ➤ , Audi 80 1992 ➤ , Audi A1 2011 ➤ , Audi A2 2001 ➤ , A ...
Refrigerant R134a Servicing - Edition 01.2011
60 Rep. Gr.00 - General, Technical Data
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