Volkswagen Polo Service & Repair Manual: Refrigerant R134a Environmental Information

Volkswagen Polo Service & Repair Manual / Refrrigerant R134a Servicing / A/C System, General Information / Refrigerant R134a / 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 boils at -26.5 °C (-15.7 °F) at a vapor pressure of 1 bar (14.5 psi).

R134a is a fluorocarbon and contains no chlorine.

R134a has a shorter atmospheric life span than refrigerant R12.

R134a does not damage the ozone layer. The ozone depletion potential is zero.

The greenhouse potential of R134a (Global Warming Potential = GWP) is approximately 1430 (the GWP of carbon dioxide is 1).

The global warming effect of R134a is ten times less than that of refrigerant R12.

Critical Point

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 ref ...

Refrigerant R134a Characteristics

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Other materials:

Refrigerant Circuit, Tracing Leaks, with Leak Detection System -VAS6196- or Leak Detection Kit -VAS6201A- or Succeeding Model
Note This repair manual describes different methods for detecting leaks in the refrigerant circuit. These methods have been tested and result in success when used correctly. If when searching for compressed air / Nit ...

Checking with Restrictor, Reservoir and A/C Compressor Regulator Valve -N280-, Externally Regulated A/C Compressor
Note Connecting service station. Refer to → Chapter „Connecting Service Station“. Observe test requirements. Refer to → Chapter „Pressures, Checking“. – ...

Flat Spots
What is a Flat Spot From Standing? Terms like flat portion, flattening, are also used as a term for flat spots from standing. Flat spots from standing cause vibration, like an incorrectly balanced wheel. It is important ...