Warning Function
EN
(1) Overheat Warning
Off
(normal
operation)
Indicates operation has been halted due to
motor or battery overheating.
To protect the motor or battery, be sure to
note the following when carrying out this
operation.
• If the motor or battery becomes hot, the
protection function will be activated and
the motor or battery will stop operating.
The overheat warning lamp on the
control panel illuminates or flashes when
this feature is active.
• If the overheating protection feature
activates, allow the tool to cool thorough-
ly (at least 30 minutes). The tool is ready
for use when the overheat 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 overheating protec-
tion feature may activate 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 deterio-
rates significantly at and below 10°C due
to work conditions and other factors.
(2) Voltage Reduction Warning
One lamp flashing
Illuminated:
Flashing:
Overheat
Overheat
(motor)
(battery)
If the tool is subject to a sudden load
during use that causes the motor to lock
up, the overdischarge prevention sensor
may be triggered, and the battery low
warning lamp may flash. The lamp will
stop flashing once you address the cause
of the motor's locking up and cycle the
trigger.
(3) Overload Warning
If the tool is subject to a sudden load
during use that causes the motor to lock
up, the overcurrent prevention sensor may
be triggered, the voltage reduction warn-
ing lamp may illuminate and flash.
(Bottom of it illuminates and middle and
top flashes.)
The lamp will stop illuminating and flash-
ing once you address the cause of the
motor's locking up and cycle the trigger.
[Battery Pack]
For Appropriate Use of
Battery Pack [Fig.9]
• The rechargeable batteries have a
limited life.
• For optimum battery life, store the Li-ion
battery pack following use without
charging it.
• When operating the battery pack, make
sure the work place is well ventilated.
For safe use
• The battery pack is designed to be
installed by proceeding two steps for
safety. Make sure the battery pack is
installed properly to the main unit before
use.
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