Overload Protection; Overdischarge Protection - Makita DCU180 Instruction Manual

Removing the battery cartridge
1. Rotate the lock lever, and then open the cover of
the battery box.
2. Pull out the battery cartridge from the battery box
while sliding the button on the front of the cartridge.
► Fig.26: 1. Button
3. Pull out the lock key.
4. Close the cover of the battery box, and then rotate
the lock lever.
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 cartridge is under one of the follow-
ing conditions. A short beep sound is emitted before the
machine stops automatically. The battery indicators and
LED indicators blink while the beep sound is emitted.

Overload protection

When the machine is operated in a manner that causes
it to draw an abnormally high current, the machine auto-
matically stops without any indication. In this situation,
turn the machine off and remove the cause of overload,
and then turn the machine on to restart.
Overheat protection
When the machine is overheated, the machine stops
automatically. Let the machine cool down before turning
the machine on again. The overheat protection is likely
to work under high temperature environment.

Overdischarge protection

When the battery capacity becomes low, the machine stops auto-
matically. If the machine does not operate even when the switches
are operated, remove the battery cartridge and charge it.
Switching the battery cartridge
► Fig.27: 1. Battery selection switch
Up to two battery cartridges can be installed in the
battery box, although the machine uses one battery
cartridge for operation. Before operating the machine,
select the battery cartridge used for operation by press-
ing the number on the battery selection switch.
NOTICE:
If only one battery cartridge is installed in
the battery box, be sure to select the battery box in
which the battery cartridge is installed.
Indicating the remaining battery
capacity on the battery box
CAUTION:
Before checking the remaining
battery capacities or switching the battery car-
tridge, be sure to stop the machine.
► Fig.28: 1. Battery indicator 2. Check button
Press the check button to indicate the remaining battery
capacities. The battery indicators correspond to each
battery.
Battery indicator status
On
CAUTION:
When the battery capacity becomes
low, a short beep sound is emitted. If you continue to
operate the machine at low battery capacity, a long beep
sound is emitted and the machine automatically stops.
When you hear the short beep sound, pull the brake
lever and lock the brake, and then switch the battery car-
tridge to a charged one or charge the battery cartridge.
When the remaining battery capacity runs out, the machine
suddenly stops automatically and this may cause an injury.
NOTE: If you continue to pull the switch trigger even
if you hear the short beep sound, the machine stops
automatically. After the machine stops automatically,
the beep sound continues and the support brake
(electric brake) is enabled. To cancel the beep sound
and release the support brake, pull the brake lever
and release the switch trigger. Do not push the
machine forcibly without releasing the support brake.
After releasing the support brake, you can tell which
battery protection system is working by checking the
battery indicator status.
► Fig.29: 1. Lighting 2. Blinking 3. Turned off
4. Overheat protection 5. Overdischarge
protection 6. Overload protection
CAUTION:
If the beep sound is emitted while
operating on slopes or the machine stops automat-
ically on slopes, move the machine to a safe place,
lock the brake, and then switch the battery cartridge
to a charged one or charge the battery cartridge.
If the load is large, and the beep sound is emit-
ted while operating on slopes or the machine
stops automatically on slopes, do not move the
machine forcibly. Lock the brake, pay attention to
safety and switch the battery cartridge to a charged
one, and then move the machine to a safe place.
Reduce the load before operating the machine again.
NOTE: You can check the remaining battery capacity
even if the lock key is not inserted.
19 ENGLISH
Remaining battery
capacity
Off
50% - 100%
20% - 50%
0% - 20%
Battery not
installed