Volkswagen Polo Service & Repair Manual: Refrigerant R134a Physical Data
|
| Chemical formula | CH2F–CF3 or CF3–CH2F |
| Chemical designation | Tetrafluoroethane |
| Boiling point at 1 bar (14.5 psi) | -26.5 °C (-15.7 °F) |
| Solidification point | -101.6 °C (-150.88 °F) |
| Critical temperature | 100.6 °C (213 °F) |
| Critical pressure | 40.56 bar absolute (588 psi) equals 39.5 bar pressure (573 psi) |
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 ...
Other materials:
A/C System Operation
The temperature in the passenger compartment depends on the
amount of heat radiated through the windows and conducted by the
metal parts of the body. In hot weather it is possible to
achieve a more comfortable temperature for the passengers by
pumping of ...
Vehicle key
Fig. 18 Vehicle key
Fig. 19 Vehicle key with alarm button
First read and observe the introductory information
and safety warnings
Vehicle key
The key can be used to lock and unlock the car from a distance .
The remote control transmitter and the battery are integrated in the key. The
re ...
Warning lamp
First read and observe the introductory information
and safety warnings
Lit up
Possible cause
Solution
Fault in the alternator.
Go to a qualified workshop. The electrical system should
be checked.
Switch off all electrical ...
