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(4) Engage the guide plate with the core bit, and turn the
guide plate to left or right so that it does not fall even if
it faces downward. (Fig. 22)
Center pin
Core bit
2.
How to bore (Fig. 23)
(1) Connect the plug to the receptacle.
(2) A spring is installed in the center pin. Push it lightly to
the wall or the fl oor straight. Connect all over the surface
of the core bit tip and start operating.
(3) When boring about 3/16" (5 mm) in depth the position
of the hole will establish. Bore after that removing the
center pin and the guide plate from core bit.
(4) Application of excessive force will not only expedite
the work, but will deteriorate the tip edge of the drill bit,
resulting in reduced service life of the rotary hammer.
CAUTION
When removing the center pin and the guide plate,
turn OFF the switch and disconnect the plug from
the receptacle.
3.
Dismounting (Fig. 24)
Remove the core bit shank from the rotary hammer
and strike the head of the core bit shank strongly two
or three times with a manual hammer holding the core
bit, then the thread becomes loose and the core bit can
be removed.
12
Guide plate
Core bit tip
Fig. 22
Fig. 23
Core bit
shank
REACTIVE FORCE CONTROL
This product is equipped with a Reactive Force Control
(RFC) feature that reduces jerking of the tool body.
If the tool bit is suddenly overburdened, any jerking of the
tool body is reduced by activation of the slip clutch or by
stopping of the motor by the sensor built into the tool body.
If the motor is stopped because of overburdening
detection by the controller, the display lamp will blink while
the switch is pulled.
In addition, the lamp will continue blinking for approximately
three seconds after the switch is released.
The motor will remain stopped while the lamp is blinking.
(Fig. 25)
Because the RFC feature may not activate or its
performance may be insuffi cient depending on the
working environment and conditions, be careful not to
suddenly overburden the tool bit and hold power tool fi rmly
while operating.
● Possible causes of sudden overburdening
Tool bit biting into material
Impact against nails, metal or other hard objects
Tasks involving prying or any excess application of
pressure, etc.
Also, other causes include any combination of the
aforementioned.
● When the reactive force control (RFC) is triggered
When the RFC is triggered and the motor stops, turn
off the tool's switch and remove the cause of the
overburdening before continuing operation.
Fig. 24
Arms are twisted
Fig. 25
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