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Volkswagen Golf Service & Repair Manual: Checking high-pressure safety valve on air conditioner compressor

Volkswagen Golf Service & Repair Manual / Heating, air conditioning / Air conditioner / Air conditioner compressor / Checking high-pressure safety valve on air conditioner compressor

Checking
Function: protects refrigerant circuit against excessive pressures.
–  Observe safety precautions → Chapter „Safety precautions when handling refrigerants“.
–  Comply with notes → Chapter „Working on refrigerant circuit“.
Risk of freezing injury caused by refrigerant. The high-pressure safety valve releases refrigerant when the engine is running and the pressure in the refrigerant circuit is too high.There is a risk of injury on hands and other parts of the body due to freezing.Always wear safety gloves.Always wear safety goggles.Switch off engine.
   
High-pressure safety valve on Denso air conditioner compressor
The high-pressure safety valve -arrow- has operated when refrigerant oil is found in the immediate vicinity.
In this case, hand over vehicle to a suitable workshop → Chapter.
  Note
On air conditioner compressors from other manufacturers the high-pressure safety valve is located at a similar position.
 

Checking high-pressure safety valve on air conditioner compressor

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