Volkswagen Golf Service & Repair Manual: High-pressure safety valve

Volkswagen Golf Service & Repair Manual / Air conditioning system with refrigerant R134a / General information on refrigerant circuit / Refrigerant circuit components / High-pressure safety valve

The high-pressure safety valve is fitted to the air conditioner compressor or the receiver.

The valve opens at a pressure above approx. 38 bar and closes again when the pressure has dropped (approx. 30 bar).

Not all the refrigerant is lost from the system.

Depending on the version, a transparent plastic disc may be fitted, which breaks when the valve opens.

High-pressure safety valve

Pipes and hoses in refrigerant circuit

The mixture of refrigerant oil and refrigerant R134a attacks certain metals (e.g. copper) and alloys and dissolves certain hose materials. Therefore, always use genui ...

Design of refrigerant circuit

...

Other materials:

Totally discharged batteries
WARNING Danger of injury! Observe warning notices and safety regulations → Chapter! A battery is designated “totally discharged” when the no-load volta ...

Opening the tailgate
Fig. 36 In the vehicle key: button for unlocking and opening the tailgate Fig. 37 Opening the tailgate from the outside First read and observe the introductory information and safety warnings It will not be possible to open the tailgate if, for example, bicycles are mounted on a carrier ...

Climate Popup
Touch the temperature arrows on the bottom of the touchscreen to display a popup for easy access to some of the most common climate controls: NOTE: For one-touch access to seat heaters and defrosters, you can add these controls to My Apps. See Customizing My Apps. Touch to access the main cli ...