3. Operating controls
Cab ventilation
68. Cab ventilation 1
2
3
4
1. Ventilation fan switch 37* 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
2. Thermostat for the air conditioner. 266* Selects cab temperature during air conditioner operation. Turning clockwise increases cooling. Works only together with the air conditioner switch. 3. Heater regulator. 267* Adjust air heating with the knob. The air is heated by the engine coolant. Turning clockwise increases heating. 4. Air conditioner switch 35* 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. Regulate the efficiency with the thermostat (2). 5. Air conditioner indicator 35* Lights when the air conditioner is activated.
The intake air is filtered before it enters the cab. All nozzles 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 doors 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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