Audi A4: Steering

 Refrigerant Circuit Pressures and Temperatures

General Information   Caution When performing work on refrigerant circuit, observe all generally applicable safety precautions and pressure container regulations. The pressures and temperatures in the refrigerant circuit depend on the current operating conditions (such as engine RPM, cool

 Refrigerant R134a

Refrigerant R134a Physical Data Vehicle air conditioning systems make use of the vaporization and condensation process. In this case, one works with a substance which boils easily, designated as refrigerant. The refrigerant used is tetrafluoroethane R134a, which boils at -26.5 ºC (-15.7 ºF) at