Functional Description - Makita DUC252 Instruction Manual

12. Use the batteries only with the products
specified by Makita. Installing the batteries to non-
compliant products may result in a fire, excessive
heat, explosion, or leak of electrolyte.
13. If the tool is not used for a long period of time,
the battery must be removed from the tool.
14. During and after use, the battery cartridge may
take on heat which can cause burns or low
temperature burns. Pay attention to the handling
of hot battery cartridges.
15. Do not touch the terminal of the tool immediately
after use as it may get hot enough to cause
burns.
16. Do not allow chips, dust, or soil stuck into the
terminals, holes, and grooves of the battery
cartridge. It may result in poor performance or
breakdown of the tool or battery cartridge.
17. Unless the tool supports the use near high-
voltage electrical power lines, do not use the
battery cartridge near high-voltage electrical
power lines. It may result in a malfunction or
breakdown of the tool or battery cartridge.
18. Keep the battery away from children.
SAVE THESE INSTRUCTIONS.
CAUTION:
Only use genuine Makita batteries. Use of non-
genuine Makita batteries, or batteries that have been
altered, may result in the battery bursting causing fires,
personal injury and damage. It will also void the Makita
warranty for the Makita tool and charger.
Tips for maintaining maximum battery life
1. Charge the battery cartridge before completely
discharged. Always stop tool operation and
charge the battery cartridge when you notice
less tool power.
2. Never recharge a fully charged battery cartridge.
Overcharging shortens the battery service life.
3. Charge the battery
temperature at 10 °C - 40 °C (50 °F - 104 °F). Let a
hot battery cartridge cool down before charging
it.
4. When not using the battery cartridge, remove it
from the tool or the charger.
5. Charge the battery cartridge if you do not use it
for a long period (more than six months).

FUNCTIONAL DESCRIPTION

CAUTION:
• Always be sure that the tool is switched off and the
battery cartridge is removed before adjusting or
checking function on the tool.
Installing or removing battery cartridge (Fig. 1)
CAUTION:
• Always switch off the tool before installing or removing
of the battery cartridge.
• Hold the tool and the battery cartridge firmly when
installing or removing battery cartridge.
Failure to hold the tool and the battery cartridge firmly
may cause them to slip off your hands and result in
damage to the tool and battery cartridge and a
personal injury.
To remove the battery cartridge, slide it from the tool
while sliding the button on the front of the cartridge.
14
cartridge with room
To install the battery cartridge, align the tongue on the
battery cartridge with the groove in the housing and slip it
into place. Insert it all the way until it locks in place with a
little click. If you can see the red indicator on the upper
side of the button, it is not locked completely.
CAUTION:
• Always install the battery cartridge fully until the red
indicator cannot be seen. If not, it may accidentally fall
out of the tool, causing injury to you or someone
around you.
• Do not install the battery cartridge forcibly. If the
cartridge does not slide in easily, it is not being inserted
correctly.
NOTE:
• The tool does not work with only one battery cartridge.
Tool/battery protection system
The tool is equipped with a tool/battery protection
system. This system automatically cuts off power to the
motor to extend tool and battery life.
The tool will automatically stop during operation if the
tool or battery are placed under one of the following
conditions. In some conditions, the indicators light up.
Overload protection
When the tool is operated in a manner that causes it to
draw an abnormally high current, the tool automatically
stops without any indication. 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 for battery / tool
When the battery/tool is overheated, the tool stops
automatically without any indication. The tool does not
start even if pulling the switch trigger. In this situation, let
the battery/tool cool before turning the tool on again.
Overdischarge protection (Fig. 2)
When the remaining battery capacity gets low, the
battery indicator blinks on the applicable battery side. By
further use, the tool stops and the battery indicator lights
up about 10 seconds. In this situation, charge the battery
cartridge.
Indicating the remaining battery capacity (Fig. 3)
Only for battery cartridges with the indicator
Press the check button on the battery cartridge to
indicate the remaining battery capacity. The indicator
lamps light up for a few seconds.
Indicator lamps
Lighted Off
Remaining
Capacity
Blinking
75% to 100%
50% to 75%
25% to 50%
0% to 25%
Charge the
battery.