VW Golf manuals

Volkswagen Golf Service & Repair Manual: Refrigerant circuit with restrictor and reservoir

Arrows show the direction of refrigerant flow.
A- low-pressure side of the refrigerant circuit.
B- high-pressure side of the refrigerant circuit.

Refrigerant circuit with restrictor and reservoir
 

     
Component Overall state of the refrigerant Pressure (in bar) Temperature in degrees Celsius
-1- Air conditioning system compressor B-side Gas up to 20 bar to +70°C
-2- Condenser from gas through vapour to liquid up to 20 bar to +70°C
-3- Restrictor from liquid to vapour B-side up to 20 bar, A-side greater than 1.5 bar B-side up to +60°C, A-side warmer than -4°C
-4- Evaporator from vapour to gas greater than 1.5 bar warmer than -4°C
-5- Reservoir Gas    
-6- Air conditioning system compressor A-side Gas    
 
The pressures on the A-side are held at approx. 2 bar by the “regulating” air conditioner compressor even at differing engine speeds. This applies however only within the rated range of the air conditioner compressor ; if the rated range of the air conditioner compressor is exceeded, the pressure will increase → Chapter.
  Note
In vehicles with air conditioner compressor regulating valve -N280-, the pressure on the low-pressure side is varied by activating the valve.
Refrigerant circuit with expansion valve
A- low-pressure side of the refrigerant circuit. B- high-pressure side of the refrigerant circuit.         ...

Test and measurement work that can be performed using a pressure gauge
Displays on the pressure gauge 1 -  Temperature scale for refrigerant R134a CF3–CH2F or CH2F–CF3. 2 -& ...

Other materials:

Refrigerant line with restrictor
Observe safety precautions → Chapter „Safety precautions when handling refrigerants“. –  Comply with notes → Chapter „Working on refrigerant circuit“. –  Observe sa ...

Information on the air conditioning system
First read and observe the introductory information and safety warnings The cooling system for the vehicle interior only works when the engine is running and the blower is switched on. The air conditioning system operates most effectively with the windows and the panorama tilting roof clos ...

Assembly overview - reversing camera system
1 -  Bolt Qty. 4 2.5 Nm 2 -  Swivel motor Removing and installing → Anchor. 3 -  Connector 4 -  Connector 5  ...

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