3. Operating controls
Cab ventilation
65. Cab ventilation
For machines up to serial no. 410251 1
4
3
2
1. Ventilation fan switch 55* Turn switch to operate the 3-speed cab fan. The fan must be used together with both the heater unit and the air conditioner. The fan must be on (1st, 2nd or 3rd speed) to operate the air conditioner.
5
For machines from serial no. 410252 (SERIES II) 1
2
3
4
2. Air flow regulator 55* Selects direction of the air flow, either towards the driver's feet or towards the windows (front windscreen, side windows and back window). Turning counter clockwise to increase the air flow towards the driver's feet. Turning clockwise to increase the air flow towards the windows. 3. Heater regulator 55* Adjust air heating with the knob. The air is heated by the engine coolant. Turning clockwise increases heating. 4. Air conditioner switch 55* Push the switch to activate the air conditioner system. A compressor (engine mounted) and a cooling element cools the air when the engine is running and this air conditioner switch is set to on. 5. Only installed on machines up to serial no. 410251: Recirculation switch 55* The switch has two positions: Pos I:Fresh air in cab. Air intake is fully open. Pos. II:Recirculation of the internal air. The ventilation fan must be used to circulate the air.
The intake air is filtered before it enters the cab. All nozzles, except nozzles for the front windscreen, are adjustable, and air may be directed in the desired direction. It is also possible to close the nozzles.
General about heat and ventilation • Keep the door and window shut. • Always open the nozzles when operating the dump truck. • Direct the air flow so that it does not blow straight on uncovered skin. • Always turn the fan on (1st, 2nd or 3rd speed) when operating the dump truck and adjust fan speed until it feels comfortable in the cab. • When using air conditioner, do not direct the air flow directly towards the windows, it can cause steamy windows.
* Numbers refer to positions on the electrical circuit diagram Operating & Maintenance Manual
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