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The pressures with the ignition turned off meet the specifications.
– Start the engine.
– Set engine speed to 2000 RPM.
– Observe pressure gauge of service station.
Note
♦
Switching pressures for actuation of A/C compressor regulator
valve -N280- and Radiator fan -V7- are vehicle-specific.
♦
Pressures must be measured at service connections; compo‐
nent locations of these connections are vehicle-specific. Refer
to ⇒ Heating, Ventilation and Air Conditioning; Rep. Gr. 87 ;
Diagnosis and Testing (vehicle-specific repair manual).
♦ Specified values for the refrigerant circuit pressures, refer to
⇒ “4.4.11 Specified Values On Vehicles with Restrictor, Accu‐
mulator and A/C Compressor Regulator Valve - Externally
Regulated Compressor“, page 179 .
4.4.11 Specified Values On Vehicles with Re‐
strictor, Accumulator and A/C Compres‐
sor Regulator Valve - Externally Regu‐
lated Compressor
High-pressure side
Increasing from initial pressure (when connecting pressure
gauges) to a maximum of 20 bar.
Audi 100 1991 ➤ , Audi 80 1992 ➤ , Audi A1 2011 ➤ , Audi A2 2001 ➤ , A ...
Refrigerant R134a Servicing - Edition 01.2011
4. Diagnosis and Testing 179
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