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Volkswagen Polo Service & Repair Manual: 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:

Test Requirements
Radiator and condenser are clean (clean if necessary). The ribbed belt for the A/C compressor and alternator tensioned correctly. All air ducts, covers and seals are OK and installed correctly. ...

Checklist
The following steps should always be carried out in the specified order before working in the engine compartment : Park the vehicle on a level and stable surface. Depress and hold the brake pedal until the engine has stopped. Apply the handbrake firmly Braking, stopping and p ...

Matting Component -ALN 775 106
Definition: Matting Component -ALN 775 106- Edition 04/2013 Product Description With the two-part HS top coat, the Matting Component -ALN 775 106- produce a matted top coat c ...

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