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. |
|
| 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. |
|
|
|
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:
Checking inner constant velocity joint
Removing
The joint is to be dismantled when following work is done:
Replacement of grease if very contaminated
Check of running surfaces for wear
Check of balls for wea ...
Indicator lamp in the vehicle key
Fig. 24 Indicator lamp in the vehicle key
First read and observe the introductory information
and safety warnings If a button on the vehicle key is pressed briefly, the
indicator lamp (arrow) flashes once. The lamp will flash several times if the
button is pressed and held, e.g. conve ...
Overview of the front passenger side
Fig. 10 Overview of the front passenger
side (left-hand drive vehicles). The controls are mirrored for right-hand drive
vehicles
Fig. 11 Dash panel near open front passenger
door (left-hand drive vehicles). The controls are mirrored for right-hand drive
vehicles
Key for and :
...
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Evaporator output temperature sender -G263- or evaporator temperature sensor
-G308
Refrigerant circuit with expansion valve