Functional Description - Makita DHR242 Instruction Manual

12. Use the batteries only with the products speci-
fied by Makita. Installing the batteries to non-com-
pliant 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 tem-
perature 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 car-
tridge. It may cause heating, catching fire, burst and
malfunction of the tool or battery cartridge, resulting
in burns or personal injury.
17. Unless the tool supports the use near high-volt-
age 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 cartridge with room tempera-
ture at 10 °C - 40 °C (50 °F - 104 °F). Let a hot bat-
tery 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 bat-
tery cartridge is removed before adjusting or checking
function on the tool.
Installing or removing battery cartridge (Fig. 1)
CAUTION:
• 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.
• Always switch off the tool before installing or removing
of the battery cartridge.
• To remove the battery cartridge, slide it from the tool
while sliding the button on the front of the cartridge.
8
• To install the battery cartridge, align the tongue on the
battery cartridge with the groove in the housing and slip
it into place. Always 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 com-
pletely. Install it fully until the red indicator cannot be
seen. If not, it may accidentally fall out of the tool, caus-
ing injury to you or someone around you.
• Do not use force when installing the battery cartridge. If
the cartridge does not slide in easily, it is not being
inserted correctly.
Indicating the remaining battery capacity (Fig. 2)
Only for battery cartridges with the indicator
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.
• The first (far left) indicator lamp will blink when the bat-
tery protection system works.
Tool / battery protection system
The tool is equipped with a tool/battery protection sys-
tem. This system automatically cuts off the power to
extend tool and battery life. The tool will automatically
stop during operation if the tool or battery is placed under
one of the following conditions:
Overload protection
This protection works when the tool is operated in a man-
ner that causes it to draw an abnormally high current. 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
This protection works when the tool or battery is over-
heated. In this situation, let the tool and battery cool
before turning the tool on again.
Remaining
capacity
Blinking
75% to 100%
50% to 75%
25% to 50%
0% to 25%
Charge the
battery.
The battery
may have
malfunctioned.