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

Volkswagen Golf Service & Repair Manual / Air conditioning system with refrigerant R134a / General information on refrigerant circuit / Electrical components not installed in refrigerant circuit / 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:

Removing and installing parking lock
Removing Gearbox is installed. – Remove cover for parking lock -1- → Chapter. – ...

Selection menu
First read and observe the introductory information and safety warnings Menu Function See Driving data Information and settings for the multifunction display (MFD). , Display of current warning or information mess ...

Safety precautions during road tests in which test and measuring equipment is used
Risk of injury due to unsecured test and measuring equipment If a front passenger airbag is triggered during an accident, unsecured test and measuring equipment can become dangerous projectiles. – Secure test and measuring equipment with seat belts on ...