OPERATION DETAILED CONTROLS AND GAUGES
3-99
Inspection and maintenance of Air Conditioner Equipped Machine 3
q When carrying out inspection and maintenance on machines equipped with an air conditioner, carry out the
inspection and maintenance according to the chart. For details, see “CHECK AND MAINTENANCE AIR CON-
DITIONER (4-41), CHECK AIR CONDITIONER COMPRESSOR BELT TENSION, ADJUST (4-53), CLEAN AIR
CONDITIONER FRESH/RECIRC FILTERS (4-62)“.
q When the air conditioner is not being used every day, to pre-
vent loss of the film of oil at various parts, run at the engine
at low speed from time to time and carry out cooling or dehu-
midifying heating for several minutes.
q If the temperature inside the cab is low, the air conditioner
may not work. In this case, circulate fresh air to warm the
inside of the cab. When the air conditioner switch is turned
ON, the air conditioner will work.
q If any abnormality is detected in any equipment or sensor
used on the air conditioner, “A/C Controller Error“ is dis-
played on the air conditioner monitor screen. If “A/C Con-
troller Error“ is displayed, please ask your Komatsu
distributor to carry out inspection and repair.
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