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:
Test prerequisites
Radiator and condenser must be clean (clean them if
necessary).
The heat insulation on expansion valve is OK and properly
installed. See vehicle-specific repair manual
→ Rep. gr.87.
The poly V ...
Removing and installing TV tuner, Golf
Special tools and workshop equipment
required
Protective cap for wiring harness connector -VAS 6223/9-
If the control unit is replaced, select the
Replace function of the resp ...
Removing broken rear window
–
Protect body and interior from glass splinters.
–
Remove pieces of glass up to adhesive sealing material.
–
Pull off connections for rear window heating and aerial.
...
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Low-pressure switch for air conditioning system -F73
Air conditioning system pressure switch -F129