Komatsu PC1250-7 PC1250SP-7 Hydraulic Excavator Operation & Maintenance Manual – PDF DOWNLOAD

Page 115

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OPERATION

DETAILED CONTROLS AND GAUGES

CIRCUIT BREAKER NOTICE When resetting the circuit breaker, always turn the starting switch OFF first. If the starting switch does not work even when the starting switch is turned ON, open the circuit breaker box inside the grease pump box at the front right of the machine and carry out inspection. If an excess current is generated, the circuit breaker cuts off electrical current to protect electrical components and wiring from damage. To return the circuit electrical current to normal after it has been cut off, push in the reset button. If the electric circuit is working normally, the reset button remains in. If the reset button pops out again immediately after it is pushed in, it is necessary to check the electric circuit. REMARK The circuit breaker is a circuit protection device installed to circuits where large current flows. It protects the electrical components and wiring from damage caused by an abnormal current in the same way as a normal fuse. After repairing and restoring the location of the abnormality, there is no need to replace the breaker. It can be used again. If the starting motor does not work even when the starting switch is turned to the ON position, breaker (8), (9) has probably cut off the circuit, so check and restore circuit breaker (8), (9). If the electrical equipment does not work even when the fuse is replaced, breaker (1) or (11) has probably cut off the circuit, so check and restore circuit breaker (1) or (11).

No. (1)

Fuse capacity 40A Fuse box

Circuit name

(2)

40A

Circuit breaker No. 4 - 7

(3)

40A

Circuit breaker No. 8 - 11

3 - 62


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