Volkswagen Polo Service & Repair Manual: Refrigerant Circuit with Restrictor and Reservoir

Refrigerant Circuit with Expansion Valve and Evaporator

1 -  Evaporator 2 -  Expansion Valve 3 -  Valve for extracting, filling and measuring ...

Refrigerant Circuit Extraction and Filling Valves for Service Station Couplings

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Other materials:

Pressure and Boiling Point
The boiling point given in tables for a liquid is always referenced to an atmospheric pressure of 1 bar (14.5 psi). If the pressure acting on a fluid changes, its boiling point also changes. For example, water boils at a lower temperatur ...

Refrigerant R134a Environmental Information
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 employed is tetrafluoroethane R134a, which bo ...

Welding and Soldering on Refrigeration Systems
Before performing welding or soldering work on vehicles near the air conditioning system components, extract the refrigerant and remove the residue by flushing with compressed air and nitrogen. The products of refrigerant decomposition d ...