Komatsu GD555-5 Operation & Maintenance Manual page 131

OPERATION
EXPLANATION OF COMPONENTS
TEMPERATURE CONTROL SWITCH
Use this switch (4) to adjust the temperature between low
temperature and high temperature.
When switch (A) is pressed, the temperature of the air blowing out
becomes higher; when switch (B) is pressed, the temperature of
the air blowing out becomes lower.
LED display (C) shows the position set for the temperature
adjustment.
FRESH/RECIRC SELECTOR SWITCH
Use this switch (5) to switch between recirculation of the air inside
the cab and intake of fresh air from outside.
When this switch is pressed, the system is set to recirculation of air
inside the cab and LED display (A) lights up.
If the switch is pressed again, the system switches to intake of
fresh air from outside and LED display (A) goes out.
Recirculation of air inside cab
Only the air inside the cab is circulated. Use this setting when carrying out quick cooling or heating of the cab or
when the outside air is dirty.
Intake of fresh air from outside
Air from the outside is taken into the cab. Use this setting when taking in fresh air from outside or when removing
the mist from the windows.
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