Volkswagen Golf Service & Repair Manual: Pressures and temperatures in the refrigerant circuit
WARNING
When working on the refrigerant circuit, observe
generally applicable safety rules and the Regulations
for Pressure Tanks. |
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The pressures and temperatures in the refrigerant circuit
depend on the momentary operating conditions (e.g. engine speed,
speed 1, 2, or 3 of radiator fan, engine temperature, whether
air conditioner compressor is on or off) as well as
environmental influences (e.g. ambient temperature, humidity,
required cooling output). |
In vehicles with air conditioner compressor regulating valve
-N280-, the pressure on the low-pressure side is varied by
activating the valve. |
Therefore, the values given in the following tables may only
be considered as guidelines. They occur at an engine speed of
1,500 to 2,000 rpm and an ambient temperature of 20°C after
about 20 minutes. |
The locations of connections provided for pressure
measurements can be found in the vehicle-specific coolant
circuits. |
At 20°C and with the engine stopped, the refrigerant circuit
will adjust itself to a pressure of 4.7 bar positive pressure
→ Chapter. |
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Function:
The evaporator output temperature sender -G263- or
evaporator temperature sensor -G308- reads the temperature
downstream from the eva ...
A- low-pressure side of the refrigerant circuit.
B- high-pressure side of the refrigerant circuit.
...
Other materials:
Dismantling and assembling auxiliary heater
Special tools and workshop equipment
required
Torque wrench -V.A.G 1410- (4…20 Nm)
Hose clamps, up to 25 mm -3094-
...
Front brakes
The type of brake system installed in the vehicle is
indicated among other things by the corresponding PR number on
the vehicle data sticker.
The vehicle data sticker can be found in the spare wheel
well and in the service schedule.
...
Washing the vehicle
First read and observe the introductory information
and safety warnings The longer substances such as insects, bird droppings,
resinous tree sap, road dirt, industrial deposits, tar, soot or road salt and other
corrosive materials remain on the vehicle, the more damage they do to the paintwo ...
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