7 Overview of controls 7.2 Cab / Operator's platform 67083 When the desired temperature is reached, a thermo- stat switch in conjunction with an electro-magnetic clutch disengages the compressor. The compressor is automatically engaged as the tem- perature rises. The air conditioner can only work properly if the door and the windows are closed. The air conditioner is shut down automatically if a mal- function occurs: The air conditioner was shut down via the high-pres- sure switch. After the system has cooled down, the air conditioner is switched on again automatically. If the air conditioner is shut down very frequently at very short intervals, it must be checked for any possi- ble faults.
Possible causes – see Problem, possible cause and remedy – Air conditioner. Note! Differences in temperature between the inside air and outside air of more than 8 °C to 10 °C (46 °F to 50 °F) are a danger to your health! 54712 7.2.17 Cab with fan and heater A hot water heating unit is installed downstream of the fresh air fan. The hot water flow rate through the heater coil and thus the temperature of the heated air can be control- led by means of turn switch (3). Putting the heater into operation: Open the taps on the engine. Close the bypass flap by moving lever (1) to the up position. Turn switch (3) in clockwise direction.
The further the switch is turned to the right, the higher the heating capacity. The adjusta- ble air louvres (7) and (8) allow the operator to control the direction of air flow (heated air and fresh air). Clean the filters in the cab roof at regular intervals – see cleaning the filters. 00 0293 210 2 - BA DOMINATOR 150/140/130 - 12/09 121