Komatsu D475A-5E0 Operation & Maintenance Manual page 134

OPERATION
Function to Switch Set Temperature Display Between Fahrenheit and Celsius
It is possible to switch the set temperature display between °F and
°C.
∨ ∧
If the " " and " " portions of temperature setting switch (3) are
pressed at the same time for more than 5 seconds while the fan is
running, the temperature display will switch between °F and °C.
(Note that the unit is not displayed.)
Liquid crystal display range
° C 18.0 to 32.0
° F 64.4 to 89.6
Extra Strong Wind Flow Function
It is possible to provide a stronger wind flow than for the normal HIGH position.
Use switch (2) to set to HIGH, then turn the extra strong wind flow switch ON. When the extra strong wind flow switch
is turned ON, the airflow from the front and the dashboard vents is increased.
PRECAUTIONS WHEN USING AIR CONDITIONER
WHEN PERFORMING COOLING, VENTILATE THE CAB FROM TIME TO TIME
If you smoke when using the air conditioner, your eyes may start to itch or burn, therefore ventilate the cab every
so often to remove the smoke.
When the air conditioner is used for long periods, perform ventilation once every hour.
BE CAREFUL NOT TO COOL TOO MUCH
For reasons of health, it is recommended that the cab should feel pleasantly cool when you enter it from the
outside (5 to 6°C (9.0 to 10.8°F) lower than the outside temperature). Pay attention to the temperature when
performing cooling.
SET SO THAT COLD AIR DOES NOT DIRECTLY BLOW ONTO THE GLASS SURFACE
If the left and right vents in the dashboard are turned so that cold air plays directly on the cab door glass, moisture
will condense on the outside of the cab door glass and reduce the visibility. (This occurs particularly in high
temperatures.)
If this happens, operate the louvers of the vents to direct the air upward and stop it from blowing directly on the
glass surface.
CHECKS DURING OFF-SEASON
Even during the off-season, run the compressor at low speed for several minutes once a week to prevent the loss
of the oil film on the lubricated parts of the compressor. (Run the engine at low speed and set the temperature control
lever to the central position.)
REMARK
When the ambient temperature is low, if the compressor is suddenly run at high speed, it may cause failure of the
compressor. Note that the system is set so that the compressor will not run when the cooler switch is turned on, if
the ambient temperature is less than 2 to 6.5°C (35.6 to 43.7°F).
EXPLANATION OF COMPONENTS
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