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. |
|
|
|
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:
Checking
–
Turn off the ignition.
–
Connect pressure gauge battery (A/C service station).
–
Take pressure gauge readings. There are two possible results
A and B.
&nbs ...
Changing bulbs in the front headlights (halogen H4)
Fig. 178 Rear view of the
right-hand H4 headlight with plastic covers: ① dipped beam and main beam, ② turn
signal and ③ side light
Fig. 179 Rear view of the
right-hand H4 headlight with rubber cover: ① dipped beam and main beam, ② turn
signal and ③ side light
First read and o ...
EU Tire Label, Short Overview
Starting on 11/1/2012, tire manufacturers must comply with the new
EU Regulation (EG) 1222/2009 (Tire Labeling Regulation).
The Tire Labeling Regulation requires that information pertaining to
rolling resistance (fuel efficiency), wet grip and external rolling
noise b ...
© 2016-2026 Copyright www.vwpolo.net
Critical Point