Komatsu PC2000-8 BACKHOE, Operation & Maintenance Manual

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OPERATION
DETAILED CONTROLS AND GAUGES
3-125
Use Air Conditioner with Care 3
NOTICE
q
Never start the air conditioner when the engine is running at high speed. It will cause failure of the air
conditioner.
q
If water gets into the control panel, it may cause unexpected failure, so be careful not to get water on
the panel. In addition, never bring flame or fire close.
Ventilation
q
If you smoke when the air conditioner is on, the smoke may start to hurt your eyes, so open the window and
turn the lever to FRESH for a while to remove the smoke while continuing the cooling.
q
When running the air conditioner for a long time, turn the lever to the FRESH position once an hour to carry
out ventilation and cooling.
Temperature Control
When the cooler is on, set the temperature so that it feels slightly cool when entering the cab (5 or 6 °C) lower than
the outside temperature). This temperature difference is considered to be the most suitable for your health, so
always be careful to adjust the temperature properly.
Inspection and maintenance of Air Conditioner Equipped Machine 3
When carrying out inspection and maintenance of machines equipped with an air conditioner, follow the procedure
given in the list. For details, see “CHECK AND MAINTENANCE AIR CONDITIONER (4-42)“, “CHECK AIR CON-
DITIONER COMPRESSOR BELT TENSION, ADJUST (4-70)“, and “CLEAN AIR CONDITIONER FRESH/
RECIRC FILTERS (4-77)“.
Other Functions 3
Self-diagnostic Function
It is possible to perform troubleshooting of various sensors and equipment used on the air conditioner.
1. Turn the starting switch key to the ON (B) position.