8 ENGLISH
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 or battery is operated in a manner that
causes it to draw an abnormally high current, the tool
automatically stops without any indication. In this sit
-
uation, 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 or battery is overheated, the tool stops
automatically and the lamp blinks. In this case, let the
tool and battery cool before turning the tool on again.
Overdischarge protection
When the battery capacity is not enough, the tool stops
automatically. In this case, remove the battery from the
tool and charge the battery.
Switch action
WARNING:
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:
When not operating the tool,
depress the trigger-lock button from side to
lock the switch trigger in the OFF position.
1
2
A
B
►
1.
Switch trigger
2.
Trigger-lock button
To prevent the switch trigger from accidentally pulled,
the trigger-lock button is provided. To start the tool,
depress the trigger-lock button from A side and pull the
switch trigger. Release the switch trigger to stop. After
use, press in the trigger-lock button from B side.
Speed change
The revolutions and blows per minute can be adjusted
by turning the adjusting dial. The dial is marked 1 (low
-
est speed) to 5 (full speed).
1
►
1.
Adjusting dial
Refer to the table below for the relationship between the
number on the adjusting dial and the revolutions and
blows per minute.
Number
Revolutions per
minute
Blows per minute
5
500
2900
4
470
2700
3
380
2150
2
290
1650
1
250
1450
CAUTION:
Do not turn the adjusting dial when
the tool is running. Failure to do so may result in
the loss of control of the tool and cause an injury.
NOTICE:
If the tool is operated continuously at
low speed for a long time, the motor will get over-
loaded, resulting in tool malfunction.
NOTICE:
The speed adjusting dial can be turned
only as far as 5 and back to 1. Do not force it past
5 or 1, or the speed adjusting function may no
longer work.
NOTE:
Soft no-load rotation function
When the speed adjusting dial is set to "3" or higher,
the tool automatically reduces the speed at no-load to
reduce the vibration under no-load.
Once operation starts with a bit against concrete,
blows per minute increase and reach the numbers as
shown in the table.
When temperature is low, the tool may not have this
function even with the motor rotating.