Komatsu H75051 Operation & Maintenance Manual page 187

OPERATION
The battery disconnect switch is used to cut out the electricity
from the battery.
Open the cover (1) of the battery box on the rear right of the
machine, raise the rubber cover (2), and battery disconnect
switch (3) is seen.
REMARK
Operate it while the system operating lamp (4) is not lit.
(O): OFF position
It allows inserting and removing of the switch key (3), and is
used for cutting off the current from the battery.
(I): ON position
The current from the battery flows into the circuit.
Before starting the machine, be sure to set it to this position.
REMARK
• If the battery disconnect switch is turned to OFF position,
every electric system of the machine becomes inoperable.
• The memory of the clock of the monitor is lost.
Set them again when using.
• Immediately after the starting switch is turned to OFF posi-
tion, data is saved on each controller.
Before turning the battery disconnect switch to OFF posi-
tion, make sure that the system operating lamp (4) below
the battery disconnect switch is not lit.
• Immediately after the reverse rotation of the fan, power to
the fan reverse solenoid is supplied for some time to pro-
tect the hydraulic motor even if the starting switch is turned
to OFF position.
Before turning the battery disconnect switch to OFF posi-
tion, make sure that the fan is stopped completely.
EXPLANATION OF COMPONENTS
3-121