HATTAT A110 - Starting and Running; Initial Operation (First 50 Hours); Engine Start Procedure

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4.2.4.2. Roof console
1. Roof heater fan
2. Air conditioning control knob
3. Recirculation control knob
4. Ventilation nozzles
5. Speaker
6. Air filter nozzle
7. Cab light
8. Sky window
4.2.4.2.1. Roof fan (1)
This fan blows air through the ventilation nozzles.
4.2.4.2.2. Recirculation control knob (2)
On the front part of the roof console there is an
adjustable control knob for air recirculation. Turning
this knob clockwise progressively closes the air inlet
from outside.
With the knob in this position:
− The cab will heat up faster,
− The heating capacity will be higher,
Higher cooling capacity with air
conditioning.
With the knob in this position:
− The windows will demist faster
(reduces humidity/ice forming).
− The pressure in the cab will be
higher (reduces dust quantity).
4.2.4.2.3. Air conditioning control knob (3)
4.2.4.2.4. Ventilation nozzles (4)
In the upper part of the cab there are FOUR nozzles
which can be turned to the desired direction. The
window surfaces can be cleared of ice or
condensation by turning the nozzles towards the
glass.
4.2.4.2.5. Cab light and switch (7)
The cab light switch has 3 positions.
The switch positions are:
− left position = light off
− centre position = door position
− right position = light on
4.2.4.2.6. Sky window (8)
Pulling to rear side it can be open, than pull to front
side it can be open.
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