Operation 4
TW9 45
4.5 Heating / ventilation
Heating
• The heater is connected to the engine oil
circuit.
• The fan is operated using the switch (15/44);
temperature is adjusted using the control
(15/57) and can be operated with fresh air and
re-circulating air.
• Open aspirating hole (15/12) for re-circulating
air mode.
• The air is distributed by adjusting the air vents.
Ventilation
• In ventilation mode, the valve towards the
engine oil circuit remains closed.
• The fan is operated using the switch (15/44).
• The air is distributed by adjusting the air vents.
Air-conditioning system (optional)
The air conditioning system should be
switched on for approx. 5 minutes at
least once a month to lubricate the
compressor seals.
• Adjust ventilation to circulating air mode, open
aspirating holes (15/12).
• Control (15/57) in position "Cold".
• Turn the air conditioning system on with the
rotary switch (15/43).
• Switch on the blower (15/44).
How to achieve good cooling
performance:
• After switching on the air conditioning
system, open the windows for 2-3
minutes to allow the hot air (stored
heat) to escape.
• Keep windows and doors closed.
• In order to achieve optimum cooling
circulation, close the foot and front air
vents and only open the rear air vents
(15/60).
• It is recommended to cool down the
vehicle interior temperature by no
more than 6 to 8°C below outside
temperature.
60
57
60
Fig. 15 Operation
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