Komatsu D155A-6 Operation & Maintenance Manual page 144

OPERATION OPERATION
3. Press RECIRC/FRESH selector switch (6) and set it to take in
fresh air.
4. Press temperature setting switch (3) and set temperature on
the display (7) monitor to maximum heating.
When operating in the rainy season or when it is desired to remove
the mist from the window glass or to dehumidify the air, turn air
conditioner switch (8) ON.
EXPLANATION OF COMPONENTS EXPLANATION OF COMPONENTS
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