3.2. Description of the individual elements Operation 3.2.11. Adjusting the heater and ventilation system Adjusting the ventilation system When the ventilation system is operated, air is blown into the driver's cab. If the cabin is closed, a light overpressure is built up, preventing dust from outside to settle down in the cab. To increase the volume of filtered fresh air, you can open the ventila- tion grid a little. The air is distributed by means of air outlet nozzles. You may open or close the nozzles individually. The exhaust direction can be varied using the diffusing disks.
You can direct the air ventilation nozzles (1) onto the front windshield and the air ventilation nozzles (2) onto the side windows. G0065014c Adjusting the heating system NOTE The heating capacity depends on the coolant temperature of the engine. Full heating capacity is only realised, if the engine is completely warmed up. 1 2 1 Blower rotary switch 2 Temperature rotary switch You can realise maximum heating inside the cabin, if you open all air ventilation nozzles, set the temperature rotary switch to maxi- mum heating power while switching on the fan with its highest level.
You may realise a comfortable temperature, if you open all air ventilation nozzles, set the temperature rotary switch to a comfort- able temperature and set the fan to an appropriately low air throughput. To cool down the temperature inside the cabin, open all air venti- lation nozzles, set the temperature rotary switch to position 'Cold' and set the fan to its highest level. To prevent premature tiredness due to lack of oxygen, it is recom- mended to open the door a little from time to time and to lock it in this position. Optionally, you may leave open the ventilation grid above the side window. 3-32 WA100M-5 – VEAM280201