Overload Protection; Overheat Protection; Overdischarge Protection - Makita GVU01SM Instruction Manual

To remove the battery cartridge;
1. Pull up the locking lever and open the battery
cover.
2.
Pull out the battery cartridge from the machine
while sliding the button on the front of the cartridge.
3. Close the battery cover.
Machine / battery protection system
The machine is equipped with a machine/battery
protection system. This system automatically cuts off
power to the motor to extend machine and battery life.
The machine will automatically stop during operation if
the machine or battery is placed under one of the fol-
lowing conditions:

Overload protection

When the battery is operated in a manner that causes
it to draw an abnormally high current, the machine
automatically stops and the main power lamp blinks in
green. In this situation, turn the machine off and stop
the application that caused the machine to become
overloaded. Then turn the machine on to restart.

Overheat protection

When the machine is overheated, the machine stops
automatically and the main power lamp lights up in red.
In this case, let the machine and batteries cool before
turning the machine on again.
NOTE: When the battery is overheated, the main
power lamp blinks in red.

Overdischarge protection

When the battery capacity is not enough, the machine
stops automatically and the main power lamp blinks in
red. In this case, remove the battery from the machine
and charge the battery cartridges or change the battery
cartridges to fully charged ones.
Protections against other causes
Protection system is also designed for other causes that
could damage the machine and allows the machine to
stop automatically. Take all the following steps to clear
the causes, when the machine has been brought to a
temporary halt or stop in operation.
1. Turn the machine off, and then turn it on again to
restart.
2. Charge the battery(ies) or replace it/them with
recharged battery(ies).
3. Let the machine and battery(ies) cool down.
If no improvement can be found by restoring protection
system, then contact your local Makita Service Center.
NOTICE:
If the machine stops due to a cause
not described above, refer to the section for
troubleshooting.
Indicating the remaining battery
capacity
Fig.10
► 1. Battery indicator
When the remaining battery capacity gets low, the bat-
tery indicator blinks on the applicable battery side. By
further use, the machine stops and the battery indicator
lights up. In this situation, charge the battery cartridge.
NOTE: If two battery cartridges are installed, the
battery installed on the left side is used first.
NOTE: If two battery cartridges are installed, the
machine automatically switches the battery when the
battery in use becomes empty.
Indicating the remaining battery
capacity
Press the check button on the battery cartridge to indi-
cate the remaining battery capacity. The indicator lamps
light up for a few seconds.
Fig.11
► 1. Indicator lamps 2. Check button
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