REMARK
• The spare fuses are installed in the back of the fuse holder
lid at the rear of the operator's seat.
• After using the spare fuses, replenish them immediately.
• One spare fuse is installed for each 5 A, 10 A, 20 A, 25 A,
and 30 A.
CIRCUIT BREAKER
NOTICE
Before restoring the circuit breaker, be sure to turn the starting switch to OFF position.
• If turning the starting switch to ON position does not oper-
ate the starting motor, open the battery box cover on the
front right of the machine and circuit breaker box on the
rear left inside the cab, and check the circuit breakers.
• The circuit breaker cuts out the electrical circuit to protect
the electrical parts and wiring when an overcurrent is gen-
erated.
To restore the cut out electrical circuit, turn the starting
switch to OFF position, and push in the reset button which
projected when the circuit was cut out.
The reset button remains pushed in if the electrical circuit
is operating normally. If the button being pushed in returns
soon, check the electrical circuit.
REMARK
• A circuit breaker is a circuit protection device installed to a
large-capacity current circuit. Similarly to an ordinary fuse,
it protects electrical parts and wiring from damages caused
by abnormal current. They can be operated again without
replacement after the abnormal part has been repaired.
• If turning the starting switch to ON position does not oper-
ate the starting motor, the circuit breakers (7), (11), and
(12) may be cut out. Check the circuit breakers, and re-
store them.
• If the electric devices do not operate even after the fuses
have been replaced, the circuit breakers (1), (3), (7) and
(9) may be cut out. Check the circuit breakers, and restore
them.
No.
Fuse capacity
Name of circuit
1
40 A
Fuse (F01-1 to 13)
2
40 A
Circuit breaker No. 4 to No. 6
3
40 A
Circuit breaker No. 7 to No. 9, fuse (F02-1)
10
105 A
Ribbon heater
11
30 A
Engine controller 1
12
30 A
Engine controller 2
EXPLANATION OF COMPONENTS
OPERATION
3-110
Содержание PC1250-11
Страница 2: ......
Страница 11: ...Do not repeatedly handle and lift loads FOREWORD VIBRATION LEVELS 1 9...
Страница 24: ......
Страница 66: ......
Страница 67: ...OPERATION Please read and make sure that you understand the SAFETY section before reading this section 3 1...
Страница 73: ...REMARK The above figure does not show all of the caution lamp symbols OPERATION GENERAL VIEW 3 7...
Страница 317: ...MAINTENANCE Please read and make sure that you understand the SAFETY section before reading this section 4 1...
Страница 377: ...Boom d Left side e Right side f Head side g Foot side MAINTENANCE MAINTENANCE PROCEDURE 4 61...
Страница 378: ...Arm h Left side i Right side MAINTENANCE PROCEDURE MAINTENANCE 4 62...
Страница 400: ......
Страница 401: ...SPECIFICATIONS 5 1...
Страница 406: ......
Страница 435: ...REPLACEMENT PARTS 7 1...
Страница 444: ......
Страница 452: ...PC1250 11 PC1250SP 11 HYDRAULIC EXCAVATOR Form No EENAM03651 2018 KOMATSU All Rights Reserved Printed in Belgium 06 2018...