Komatsu WB93R-5, Operation & Maintenance Manual

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INSTRUMENTS AND CONTROLS
83
23 - HYDRAULIC HAND HAMMER SWITCH (if provided)
When pressed (LED on), this switch enables the hydraulic cir-
cuit of the hand hammer. When pressed again (LED off), it dis-
ables the circuit.
24 - IGNITION SWITCH
The ignition switch is a rotary key switch with four positions
marked with the following symbols «
» - (OFF) - « » -
« » (START).
For further details on the use of this switch, see "3.6.2 START-
ING THE ENGINE").
25 - FAN SWITCH
It is a three-speed switch and operates the fan motor.
Turn the switch clockwise to increase the fan speed.
If operated after opening the cock installed on the heater, it en-
sures the circulation of warm air and serves as heating switch
(see "3.5.3 VENTILATION AND HEATING").
The temperature of the air delivered by the heater can be ad-
justed through the knob positioned under the switch. Turn the
knob clockwise to increase the temperature and counterclock-
wise to reduce it.
If the machine is provided with air conditioning system, the
same knob can be used to adjust the air flow and therefore the
temperature inside the cab. For further information, see "3.5.4
AIR CONDITIONER (if installed)".
26 - AIR CONDITIONER SWITCH (if provided)
Press the switch (LED on) to start the compressor of the air
conditioner.
For further information on the operation of the air conditioning
system, see "3.5.4 AIR CONDITIONER (if installed)".
Press the switch again (LED off) to stop the air conditioner.
IMPORTANT
q
It is advisable to start the air conditioner only with low
engine rpm and not during acceleration, to avoid dam-
aging the system or breaking the compressor drive belt.
RKA13960
RWA23290
RWA07170
RYA13780
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