Komatsu GD555-5 Operation & Maintenance Manual page 130

OPERATION
EXPLANATION OF COMPONENTS
FAN SWITCH
Use this switch (2) to adjust the air flow from the fan.
The air flow can be adjusted to 5 stages.
When this switch (A) is pressed, the air flow increases; when
switch (B) is pressed, the air flow decreases.
LED display (C) shows the position set for the air flow.
AIR CONDITIONER SWITCH
Use this switch (3) to actuate and stop the cooling and
dehumidifying-heating function.
Turn the main power switch ON, then press the air conditioner
switch. The air conditioner comes on and LED display (A) lights up.
When the switch is pressed again, the switch goes OFF and LED
display (A) goes out.
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