Overload Protection; Overheat Protection; Overdischarge Protection - Makita DMC300 Instruction Manual

Indicating the remaining battery
capacity
Only for battery cartridges with the indicator
► Fig.2: 1. Indicator lamps 2. Check button
Press the check button on the battery cartridge to indi-
cate the remaining battery capacity. The indicator lamps
light up for a few seconds.
Indicator lamps
Lighted Off
NOTE: Depending on the conditions of use and the
ambient temperature, the indication may differ slightly
from the actual capacity.
NOTE: The first (far left) indicator lamp will blink when
the battery protection system works.
Tool / battery protection system
The tool is equipped with a tool/battery protection sys-
tem. This system automatically cuts off power to the
motor to extend tool and battery life. The tool will auto-
matically stop during operation if the tool or battery is
placed under one of the following conditions.

Overload protection

When the tool/battery is operated in a manner that
causes it to draw an abnormally high current, the tool
stops automatically and the operation lamp will blink. In
this situation, turn the tool off and stop the application
that caused the tool to become overloaded. Then turn
the tool on to restart.

Overheat protection

When the tool/battery is overheated, the tool stops
automatically and the operation lamp will blink. In this
situation, let the tool cool down before turning the tool
on again.

Overdischarge protection

When the battery capacity becomes low, the tool stops
automatically. If the tool does not run along with the
switch operation, remove the battery from the tool and
charge it.
Remaining
capacity
Blinking
75% to 100%
50% to 75%
25% to 50%
0% to 25%
Charge the
battery.
The battery
may have
malfunctioned.
Protections against other causes
Protection system is also designed for other causes
that could damage the tool and allows the tool to stop
automatically. Take all the following steps to clear the
causes, when the tool has been brought to a temporary
halt or stop in operation.
1. Turn the tool 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 tool and battery(ies) cool down.
If no improvement can be found by restoring protection
system, then contact your local Makita Service Center.
Switch action
WARNING:
you simply pull the switch trigger without press-
ing the lock-off button. A switch in need of repair
may result in unintentional operation and serious
personal injury. Return tool to a Makita service center
for proper repairs BEFORE further usage.
WARNING:
by taping down or some other means. A switch with
a negated lock-off button may result in unintentional
operation and serious personal injury.
CAUTION:
Before installing the battery car-
tridge into the tool, always check to see that the
switch trigger actuates properly and returns to
the "OFF" position when released.
CAUTION:
Do not pull the switch trigger hard
without pressing in the lock-off button. This can
cause switch breakage.
CAUTION:
The tool starts to brake the wheel
rotation immediately after you release the switch
trigger. Hold the tool firmly to respond the reac-
tion of the brake when releasing the switch trig-
ger. Sudden reaction can drop the tool off your hand
and can cause a personal injury.
To prevent the switch trigger from being accidentally
pulled, a lock-off button is provided. To start the tool,
press and hold the lock-off button, and then pull the
switch trigger. Release the switch trigger to stop.
► Fig.3: 1. Switch trigger 2. Lock-off button
Wheel selection
CAUTION:
The outside diameter, thickness
and rated speed of your accessory must be within
the capacity rating of your power tool.
CAUTION:
Wheels must be used only for
recommended applications.
Select one of the most appropriate types of cutting
wheels according to your application.
Wheel type
Cut off wheel
Tungsten carbide
grit wheel
Diamond Wheel
12 ENGLISH
NEVER use the tool if it runs when
NEVER defeat the lock-off button
Practical applications
Cutting steel, stainless steel, metals
Cutting plastics, plaster, composite
materials
Cutting tiles, ceramics