Volkswagen Polo Service & Repair Manual: 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 off some of the heat. |
| As heat spreads into cooler areas, the passenger compartment
is equipped with a unit for generating low temperatures. In the
unit, refrigerant is constantly evaporated. The heat required
for this is extracted from the air flowing through the
evaporator. |
| After absorbing heat, the refrigerant is pumped off through
the compressor. The action of the A/C compressor increases the
heat content and temperature of the refrigerant. Its temperature
is then substantially higher than that of the surrounding air. |
| The warm refrigerant flows to the condenser. There, the
refrigerant dissipates its heat through the condenser to the
surrounding air due to the temperature difference between the
refrigerant and air. |
| The refrigerant thus acts as a heat transfer medium. As it
is to be reused, the refrigerant is returned to the evaporator. |
| For this reason all air conditioning systems are based on
the refrigerant circulation principle. There are however
differences in the combination of aggregates. |
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Being comfortable while driving leads to better
concentration and safe driving. Air conditioning makes drivers
and passengers more comfortable when temperatures or hu ...
General Safety Precautions
As per VBG 20, German industrial liability insurance
association.
Follow th ...
Other materials:
Rolling Resistance Tires
Tire deformation when rolling causes the vehicle to loose
energy that makes the rolling resistance noticeable.
Deformation is significantly lowered on rolling resistance
tires due to new construction and low-wear surface mixtures.
...
Repair Paint System for Matte Painted Vehicles
Edition 04/2013
The following describes the repair paint system for matte
painted vehicles. Area of application: large surfaces/complete
painting
Application
Metal Surfaces
...
Leaks or Internal Damage, for Example Noises or No Output
Note
For vehicles with an electrically-driven A/C compressor,
de-energize the high voltage system before removing the A/C
compressor. Refer to
→ Electrical System Hybrid; Rep. Gr.93.
–
Dischar ...
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Comfort
Safety Precautions