Komatsu Utility 76243, Operation & Maintenance Manual

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EXPLANATION OF COMPONENTS
OPERATION
3-64
WHEN NOT USING THE AIR CONDITIONER REGULARLY
Run the air conditioner in cooling or dehumidifi heating mode for several minutes from time to time to pre-
vent the loss of the oil film in various parts of the compressor.
REMARK
If the temperature inside the cab is low, the air conditioner may not work. In such cases, use the recirculated air to
warm up the inside of the cab, then turn the air conditioner switch on. The air conditioner will be run.
COOL BOX
When the cooling is being used, this can be used for keeping
drinks and other things cool.
When the heating is being used, it can be used to keep things
warm.
When not using the box, close the grill.
Do not use the cool box for things which smell or leak water or
break easily.
Do not use it as a holder for tools or other small objects.
PRECAUTIONS WHEN USING 3
PRECAUTIONS WHEN USING THE COOLING
q
If you smoke when using the air conditioner in the RECIRC mode, your eyes may start to itch or burn. Ventilate
the cab ever so often to remove the smoke.
q
When using the air conditioner for a long period of time, carry out ventilation process at least once every hour.
When using the air conditioner, it is recommended for health reasons, that it should only feel slightly cooler (5 or
6°C lower than the outside temperature) when you enter the cab.
Therefore, adjust the temperature to a suitable level.
SET SO THAT COLD AIR DOES NOT DIRECTLY BLOW ONTO THE GLASS SURFACE 3
q
If the vents (left and right) in the middle of the dashboard are turned so that cold air blows directly on the cab
door glass, moisture may condense on the outside of the cab door glass and reduce the visibility. (This occurs
particularly in high temperatures.)
If this happens, close the louvers of the vent and change the direction to prevent the cold air from blowing
directly on the surface of the glass.
CHECKS DURING OFF-SEASON 3
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 con-
trol 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.