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:

Assembly overview - fuel delivery unit/fuel gauge sender, vehicles with auxiliary heater
1 -  Fuel delivery unit With fuel system pressurisation pump -G6-. With integrated fuel filter; fuel filter cannot be renewed separately Carrying out electrical test of fuel pump in Guided fault finding mode → ...

Assembly overview - rear window wiper system
1 -  Cap 2 -  Nut Specified torque: 12 Nm 3 -  Wiper arm with joint-free wiper Removing and installing → Chapter Adjusting park position → Ch ...

Diagonal washout
Diagonal washout on a tyre Diagonal washout runs at an angle of approx. 45° to the direction of rotation. It usually occurs at one point only, but can also occur at several points around the circumference of the tyre. ...

© 2016-2022 Copyright www.vwgolf.org