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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:

Fastening and unfastening seat belts
Fig. 50 Inserting the seat belt latch plate into the buckle Fig. 51 Removing the latch plate from the buckle First read and observe the introductory information and safety warnings If worn properly, seat belts hold the vehicle occupants in the correct sitting position during an accident ...

After changing a wheel
First read and observe the introductory information and safety warnings Clean the tools as necessary and place them back in the toolbox in the luggage compartment . Stow the spare wheel, temporary spare wheel or the removed wheel safely in the luggage compartment. The tight ...

General Information
Tongue Weight Specifications The tongue weight specifications on the trailer hitch type label are inspection values and only valid for the hitch. The permitted tongue weight for the vehicle may be less and it must not b ...

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