Volkswagen Golf Service & Repair Manual: Connections to valves for switches in the refrigerant circuit
WARNING
| Danger of freezing injuries. |
| If refrigerant circuit has not been evacuated,
refrigerant will escape. |
| The refrigerant must be extracted before the valve
-C- is removed. If the
refrigerant circuit is not opened within 10 minutes
after it has been evacuated, pressure may develop in
coolant circuit due to re-evaporation. Extract
refrigerant again. |
|
| The switches on the high-pressure and low-pressure sides
have different threads. |
|
|
|
| Use only valves and O-rings that are resistant to
refrigerant R134a and its associated refrigerant oils. |
| A - |
Connection (soldered in) |
|
|
|
Function:
In the event of pressure loss in the refrigerant circuit,
switches the air conditioner compressor off (at approx. 2 bar).
...
This pressure switch has 3 functions:
1. Switches radiator fan to next higher speed when pressure
increases in refrigerant circuit (approx. 16 bar).
...
Other materials:
Moving push button to installation position in the handle
Special tools and workshop equipment
required
Release tool -T10534-
If the push-button was pressed by mistake, the installation
position can be restored.
...
Cavity sealing, body at front and centre
Cavity sealing, door of 2-door
Illustration shows left side. The right side is the mirror image.
Note
The indicated areas have been treated with cavity sealant and must
be resealed following repairs.
...
Supplementary heating mode
Once the coolant temperature has reached approx. 84 °C, the
control unit switches to energy-saving control mode. If the
coolant temperature continues to rise above approx. 88 °C, the
control unit switches to the controlled waiting period. If t ...
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Low-pressure switch for air conditioning system -F73
Air conditioning system pressure switch -F129