BA 35203_04 *  3.0 *  35203_04_05_Bedienung.fm 5-131
Operation 5
Auxiliary heater (option)(Opt)
The control element 18 of the auxiliary heating is located to the right 
above the switching console (near the cabin door).
At engine standstill, the auxiliary heater warms up the coolant that flows 
through the cabin heating to warm up the cabin.
Double advantage: warm cabin and preheated engine!
The heaters (engine heating and auxiliary heater) can be used 
independently of each other.
Explosion hazard during operation of the auxiliary heater near 
flammable vapours or dust!
Can cause serious injury and death.
► Switch off the auxiliary heater before refueling the machine
Poisoning and suffocation hazard during operation of auxiliary 
heater in enclosed areas!
Can cause serious damage to health or death.
► Do not put the auxiliary heater into operation in enclosed areas.
The auxiliary heater can be damaged by a loss of voltage.
► After switching it off, the auxiliary heater still runs for about 2 minutes 
to cool down. 
► Switch off the battery master switch only if the auxiliary heater does not 
run any more.
Operating/programming the auxiliary heater
1. Adjust the fan speed with rotary switch 94: 
positions 1 – 3
2. Adjust the temperature with rotary switch 95:
K = cold/W = warm
3. Set the auxiliary heater timer.
Refer to the operator’s manual of the auxiliary heater supplied with the 
machine for operating and programming the timer!