Hitachi C 18DBAL Safety Instructions And Instruction Manual page 12

English
Electronic control
○ Soft-start
○ Overload protection
This protection feature cuts off the power to the motor
in the event of overloading of motor or a conspicuous
reduction in rotational speed during operation.
When the overload protection feature has been
activated, the motor may stop.
In this case, release the tool switch and eliminate
causes of overloading.
After that you can use it again.
○ Overheat protection
This protection feature cuts off the power to the motor
and stops the power tool in the event of overheating of
motor during operation.
When the overheat protection feature has been
activated, the motor may stop.
In this case, release the tool switch and cool it down in
a few minutes.
After that you can use it again.
○ Rotation speed changeover function (Power mode /
Silent mode)
(Power mode / Silent mode switch function)
Each press of the Mode Selector Switch changes the
operating mode. (Fig. 5)
Mode selector switch
Silent mode indicator lamp
12
Fig. 5
Silent mode reduces maximum motor RPM enabling
effi cient work with less noise.
The Silent Mode Indicator Lamp lights in Silent mode.
When the load increases during Silent mode, the tool
will automatically switch to Power mode and revert
back to Silent mode when the load decreases.
In Power mode, no change is made to Silent mode
even when the load decreases.
NOTE
○ To enable mode changes, pull the switch once after
installing the battery.
○ Do not give a strong shock to the switch panel or
break it. It may lead to a trouble.