Hitachi DH 30PC - Manual (Page 17)

17
English
(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 faced downward. (Fig. 17)
2. How to bore (Fig. 18)
(1) Connect the plug to the power source.
(2) A spring is installed in the center pin.
Push it lightly to the wall or the floor
perpendicularly. 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:
⅜ When removing the center pin and the guide plate, turn OFF the switch and
disconnect the plug form the receptacle.
3. Dismounting. (Fig. 19)
Remove the core bit shank from the
rotary hammer and strike the head of
the core bit shank strongly two or three
times with the manual hammer
holding the core bit, then the thread
becomes loose and the core bit can be
removed.
Fig. 16 Fig. 17
Core Bit
Core Bit Tip
Guide Plate
Center Pin
Fig. 18
Fig. 19
Core Bit shank