Audi A2 2001 - Page 175

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4.4.8 Checking Pressures On Vehicles with
Restrictor, Reservoir and A/C Compres‐
sor Regulator Valve - Externally Regu‐
lated A/C Compressor
Note
♦ Connecting service station. Refer to
⇒ “2.4 A/C Service Station“, page 79 .
♦ Observe test requirements. Refer to
⇒ “4.4 Pressures, Checking“, page 153 .
– Refrigerant circuit, checking pressure with service station, re‐
fer to
⇒ “4.4.1 Checking Pressure with Service Station“, page 153
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
♦ The switch pressures for the A/C compressor regulator valve
-N280- and the 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
⇒ “4.4.9 Specified Values On Vehicles with Restrictor, Reser‐
voir and A/C Compressor Regulator Valve - Externally Regu‐
lated A/C Compressor“, page 171 .
4.4.9 Specified Values On Vehicles with Re‐
strictor, Reservoir and A/C Compressor
Regulator Valve - Externally Regulated
A/C Compressor
High-pressure side
Increasing from initial pressure (when connecting pressure
gauges) to 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 171