(1) LED light
CAUTION:
• The built-in LED light is designed to
illuminate the small work area tempo-
rarily.
• Do not use it as a substitute for a reg-
ular flashlight, since it does not have
enough brightness.
• LED light turns off when the tool has
not been used for 5 minutes.
Caution: DO NOT STARE INTO BEAM.
Use of controls or adjustments or
performance of procedures other than
those specified herein may result in
hazardous radiation exposure.
(2) Overheat warning lamp
To protect the motor or battery, be
sure to note the following when car-
rying out this operation.
• If the motor or battery becomes hot,
the protection function will be acti-
vated and the motor or battery will
stop operating. The overheat warn-
ing lamp on the control panel illumi-
nates or flashes when this feature is
active.
• If the overheating protection feature
activates, allow the tool to cool tho-
roughly (at least 30 minutes). The
tool is ready for use when the over-
heat warning lamp goes out.
• Avoid using the tool in a way that
causes the overheating protection
feature to activate repeatedly.
• If the tool is operated continuously
under high-load conditions or if it is
used in hot-temperature conditions
(such as during summer), the over-
heating protection feature may acti-
vate frequently.
• If the tool is used in cold-temperature
conditions (such as during winter) or
if it is frequently stopped during use,
the overheating protection feature
may not activate.
• The performance of the EY9L42 de-
teriorates significantly at and below
10°C due to work conditions and
other factors.
(3) Battery low warning lamp
Excessive (complete) discharging of
lithium ion batteries shortens their
service life dramatically. The driver
includes a battery protection feature
designed to prevent excessive dis-
charging of the battery pack.
• The battery protection feature acti-
vates immediately before the battery
loses its charge, causing the battery
low warning lamp to flash.
• If you notice the battery low warning
lamp flashing, charge the battery
pack immediately.
Off
(normal
operation)
Flashing
(No charge)
Battery protection
feature active
Off
(normal
operation)
Flashing:
Overheat
(battery)
Indicates operation has
been halted due to motor
or battery overheating.
Before the use of LED light,
always pull the power switch
once.
Press the LED light
button.
The light illuminates with
very low current, and it does
not adversely affect the
performance of the tool
during use or its battery
capacity.
[Battery Pack]
For Appropriate Use of
Battery pack
Li-ion Battery pack
• For optimum battery life, store the
Li-ion battery pack following use
without charging it.
• When charging the battery pack,
confirm that the terminals on the
battery charger are free of foreign
substances such as dust and water
etc. Clean the terminals before
charging the battery pack if any for-
eign substances are found on the
terminals.
The life of the battery pack terminals
may be affected by foreign sub-
stances such as dust and water etc.
during operation.
• When battery pack is not in use,
keep it away from other metal ob-
jects like: paper clips, coins, keys,
nails, screws, or other small metal
objects that can make a connection
from one terminal to another.
Shorting the battery terminals to-
gether may cause sparks, burns or a
fire.
• When operating the battery pack,
make sure the work place is well
ventilated.
• When the battery pack is removed
from the main body of the tool, re-
place the battery pack cover imme-
diately in order to prevent dust or dirt
from contaminating the battery ter-
minals and causing a short circuit.
Battery Pack Life
The rechargeable batteries have a
limited life. If the operation time be-
comes extremely short after re-
charging, replace the battery pack
with a new one.
Battery Recycling
ATTENTION:
For environmental protection and
recycling of materials, be sure that
it is disposed of at an officially as-
signed location, if there is one in
your country.
[Battery Charger]
Charging
Cautions
• If the temperature of the battery pack
falls approximately below í10°C
(14°F), charging will automatically
stop to prevent degradation of the
battery.
• The ambient temperature range is
between 0°C (32°F) and 40°C (104°F).
If the battery pack is used when the
battery temperature is below 0°C (32°F),
the tool may fail to function properly.
• When charging a cool battery pack
(below 0°C (32°F)) in a warm place,
leave the battery pack at the place
and wait for more than one hour to
warm up the battery to the level of
the ambient temperature.
• Cool down the charger when charg-
ing more than two battery packs
consecutively.
• Do not insert your fingers into con-
tact hole, when holding charger or
any other occasions.
To prevent the risk of fire or damage to
the battery charger.
• Do not use power source from an en-
gine generator.
• Do not cover vent holes on the charger
and the battery pack.
• Unplug the charger when not in use.
