VW Golf manuals

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)
B -  O-ring
C -  Valve (with O-ring)
 

Connections to valves for switches in the refrigerant circuit

Low-pressure switch for air conditioning system -F73
Function: In the event of pressure loss in the refrigerant circuit, switches the air conditioner compressor off (at approx. 2 bar). ...

Air conditioning system pressure switch -F129
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:

Technical data
General repair instructions Repairing electrical wiring harnesses and connectors → Electrical System, General Information; Rep. gr.97 Releasing and dismantling connector housings → Electrical Sys ...

Removing and installing driver side footwell vents, RHD vehicles
Removing Pyrotechnic components may trigger unintentionally.Risk of injury.Discharge any static charge accumulated in your body by briefly touching striker plate for door. –  Remove driver side knee airbag → Genera ...

Assembly overview - coolant pump, thermostat
1 -  Thermostat housing Removing and installing → Chapter 2 -  Thermostat For small cooling circuit Starts to open at approx. 105°C Different versions. Refer to ...

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