Volkswagen Polo Service & Repair Manual: Comfort
| Being comfortable while driving leads to better
concentration and safe driving. Air conditioning makes drivers
and passengers more comfortable when temperatures or humidity
are high. While opening the windows or sunroof or increasing the
air flow can make vehicle occupants more comfortable, it also
exposes them to more noise, draughts, exhaust, pollen and dust. |
| A well-designed heating and air conditioning system can
increase comfort by controlling the temperature, humidity and
air flow inside the vehicle. This is done both when the vehicle
is moving and when it is stationary. |
| Air conditioning also offers these advantages: |
| It cleans the air that enters the vehicle interior. The damp
fins on the evaporator collect dust and pollen, which is then
removed by condensation. |
| Temperatures in a mid-size vehicle (for example: after a
short drive, outside temperature 30 °C (86 °F) in the shade and
the vehicle exposed to sunlight). |
|
|
|
| Area |
Temperature with A/C System in Celsius (Fahrenheit) |
Temperature
without A/C System in Celsius (Fahrenheit) |
| Head area |
23 °C (73
°F) |
42 °C (107 °F) |
| Upper body area |
24 °C (75
°F) |
40 °C (104 °F) |
| Foot area |
30 °C (86 °F) |
35 °C (95 °F) |
| Environmental Information |
| Vehicles manufactured after 1992 have air conditioning
systems that use refrigerant R134a. This refrigerant does not
contain chlorine and does not deplete the ozone layer. |
| Refrigerant R12 was used through 1992. Due to its chlorine
atoms, this CFC has a high potential for depleting the ozone
layer as well as a tendency to increase the greenhouse effect. |
| Conversions are offered for existing systems filled with the
ozone-depleting substance R12. |
| Refer to Repair Manual for A/C systems with refrigerant R12.
This repair manual is only available in hard copy. |
| For environmental protection reasons, refrigerants must not
be released into the atmosphere. For laws and regulations. Refer
to
→ Chapter „Laws and Regulations“. |
|
|
|
Refrigerant oil mixes with the refrigerant (about 20 - 40%,
depending on compressor type and amount of refrigerant) and
circulates constantly in the system, lubricati ...
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 i ...
Other materials:
Headlight range control, instrument and switch lighting
Fig. 69 Next to the steering wheel: control
for instrument and switch lighting ① and headlight range control ②
First read and observe the introductory information
and safety warnings
① Instrument and switch lighting
When the headlights are switched on, the brightness of the instrument ...
Automatic belt
retractor, belt tensioner, belt tension limiter
First read and observe the introductory information
and safety warnings
The seat belts in the vehicle are part of the vehicle safety concept and include
the following important functions:
Automatic belt retractor
The seat belts on the driver seat and front passenger seat, as well as those
...
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 refrigerant.
The refrigerant employed is tetrafluoroethane R134a, which
bo ...
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Refrigerant Oil
A/C System Operation