Komatsu H70051 Series Operation & Maintenance Manual page 187

OPERATION
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 it 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.
SYSTEM OPERATING LAMP
The system operating lamp indicates that the controller mount-
ed on the machine is turned ON.
System operating lamp (1) lights up in green when the control-
ler is turned ON and normally goes out in 5 to 6 minutes after
the power for the machine is turned OFF.
Before operating the battery disconnect switch, check that sys-
tem operating lamp (1) is not lit.
NOTICE
If the battery disconnect switch is turned OFF while the
system operating lamp is lit, the data in the controller may
be lost.
REMARK
• Even if the starting switch is in OFF position, the controller may operate. The system operating lamp lights
up in this case, but it is not abnormal.
• After the starting switch has been turned off, the system operating lamp may stay lit for a long time.
In such case, consult your Komatsu distributor.
• While DEF system devices are operating, the system operating lamp lights up to return DEF to the tank.
Do not turn the battery disconnect switch to OFF position while the system operating lamp is lit.
BACKUP ALARM
NOTICE
If water directly hits the backup alarm during the high-pressure machine washing, the water gets in it
and the sound pressure decreases. Do not jet the water over the backup alarm.
This alarm sounds as soon as the machine moves in reverse to
warn the people behind the machine.
The operations to move the machine in reverse are as follows.
• Set the directional lever to REVERSE position.
• Set the directional selector switch to REVERSE position.
EXPLANATION OF COMPONENTS
3-121