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. |
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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 ...
Other materials:
Valve, Removing and Installing, Valve Explanations
1. Valve Body
1 -
Valve body
2 -
Valve Insert
3 -
Valve cap
The rubber valve for tubeless tires is designed to seal
air-tight in the ...
Checklist
To ensure your own safety and that of your passengers, observe
the following actions in the specified order :
Stop the vehicle at a safe distance
away from moving traffic and on a suitable surface .
Switch on the hazard warning lights
using the button .
Apply the handbrake ...
Tires, Damage from Low Tire Pressure
The most common causes of failure are small external damage,
a defective valve or a leaky rim due to corrosion or damage.
Separation of Carcass and Rubber
Strong heating due to driving w ...
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