Battery Disconnect Switch - Komatsu PC500LC-10R Shop Manual

BATTERY DISCONNECT SWITCH

BATTERY DISCONNECT SWITCH
FUNCTION OF BATTERY DISCONNECT SWITCH
(O): OFF position
(I): ON position
• Battery disconnect switch (1) can be used to disconnect
the battery as an alternative way to removing the negative
(-) terminal from the battery in the following cases.
• When the machine is going to be stored for a long pe-
riod of time
• Before performing repair or maintenance for electrical
system
• Before performing electrical welding
• Before performing work for battery
• Before replacing the fuse, or etc.
• When the battery disconnect switch (1) is at OFF position (the contact is opened), all the continuous power
supplies for the components including the starting switch B terminal and controllers are all cut out. It is the
same state as the time when the battery is not connected. Thus, all the electrical system of the machine are
out of operation.
NOTICE
• Do not turn off battery disconnect switch (1) while system operating lamp is lit.
If battery disconnect switch (1) is turned off while system operating lamp is lit, it may erase the data
in the controller, and damage the controller seriously.
• Do not turn the battery disconnect switch (1) to OFF position while the engine is running or immedi-
ately after the engine is stopped.
If battery disconnect switch (1) is turned to OFF position while the alternator is generating power, the
generated current has nowhere to go. It leads to over-voltage in the electrical system of the machine,
which may cause serious damage to the electrical system including the electric devices and control-
lers.
REMARK
• The system operating lamp is lit while the controller is in operation. The system operating lamp is lit while
KOMTRAX terminal is performing communication, even if the starting switch is set to OFF position.
• If battery disconnect switch (1) has been at OFF position for a long period, the machine monitor and the
clock of the radio may return to the initial state. Resetting is required in this case.
10-14
10 STRUCTURE AND FUNCTION
PC500LC-10R