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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:

Tyre damage
First read and observe the introductory information and safety warningsDamage to tyres and rims is often not readily visible. Any unusual vibrations or signs that the car is pulling to one side may indicate that one of the tyres is damaged . Reduce your speed immediately if you suspect th ...

Other stowage compartments
Fig. 101 In the roof: coat hooks First read and observe the introductory information and safety warnings Coat hooks in the roof Coat hooks are located on the central door pillar and on the rear grab handles in the roof (arrows). Other stowage areas: In the rear door trims. In the ...

Spare wheel or temporary spare wheel
Fig. 148 In luggage compartment: variant A: handwheel for securing spare wheel and variant B: handwheel for securing temporary spare wheel First read and observe the introductory information and safety warningsRemoving the spare wheel Open the tailgate then lift up and secure the variab ...

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