Volkswagen Polo Service & Repair Manual: Refrigerant R134a Physical Data
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| 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:
Inspecting Tires
Because tire damage can have serious consequences, the
technician and the driver should regularly check the tires, as
it is the best form of early problem recognition.
Pre-damaged tires cannot withstand driving situations like
high vehic ...
Radio reception and aerials
First read and observe the introductory information
and safety warningsFor factory-fitted radio or navigation systems, the aerial
for radio reception can be installed in various locations in the vehicle:
On the inside of the rear window, together with the rear window heating.
On the i ...
Refrigerant Circuit, General Precautions
Follow the instructions for the workplace. They should be
displayed in the workplace.
Ensure absolute cleanliness when working.
Wear work clothing, safety goggles and gloves when working
with refrigerant and ...
