Komatsu WA800-3E0, Руководство по эксплуатации и техническому обслуживанию

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OPERATION
EXPLANATION OF COMPONENTS
3-49
CIRCUIT BREAKER 3
NOTICE
q
When resetting the circuit breaker, always turn the
starting switch OFF first.
q
Do not keep the circuit breaker reset button pressed.
If the electric power does not come on when the starting switch
is turned ON, the circuit breaker has probably been tripped, so
check.
The circuit breaker is at the side of the engine on the right side
of the machine.
REMARK
The circuit breaker is a circuit protection device installed to circuits where a large capacity electric current is flow-
ing. In the same way as a normal fuse, it protects the electrical equipment and wiring from damage if there is an
abnormal flow of electricity. However, after the problem point recovers, there is no need to replace any parts. It can
simply be reset.
When resetting the electric circuit after it has been cut off, wait for 5-10 minutes after the circuit was cut off, then
press the reset button. When resetting the electric circuit after it has been cut off, the operating effort of the reset
button may be heavier than when operating it in normal conditions.
There is no difference in the height of the reset button between the condition when that the circuit is cut off or the
condition when it has been reset. Check that the circuit has been reset by the effort needed to operate the button.
If the circuit reset operation is carried out but the operating effort for the reset button is heavy, it is necessary to
inspect the electric circuit.
If the starting motor does not start even when the starting switch is turned to the START position, circuit breakers
(1), (2), or (3) have probably cut off the circuit, so check and reset circuit breakers (1), (2), and (3).
If the electrical equipment does not work even when the fuse has been replaced, circuit breaker (1) has probably
cut off the circuit, so check and reset circuit breaker (1).
SLOW BLOW FUSE 3
If the power does not come on when the starting switch is
turned ON, the slow-blow fuse may be blown, so check and
replace it.
The slow blow fuse is beside the engine on the right side of the
machine.
SLOW BLOW FUSE
(1) 120A: Alternator power supply
(2) 80A: Main power
No. Fuse capacity Name of circuit
(1) 30A Battery power source (Starting switch, Hazard)
(2) 20A Engine controller 1 power supply
(3) 20A Engine controller 2 power supply