Hitachi Koki DH 24PM Manual De Instrucciones E Instrucciones De Seguridad página 12

English
CAUTION:
Application of force more than
necessary will not only reducing
drilling efficiency at all, but will
deteriorate the tip edge of the drill bit
and reduce the service life of the
rotary hammer in addition.
Drill bit may snap off while withdrawing
the rotary hammer from the drilled hole.
For withdrawing, it is important to use a
pushing motion.
Do not attempt to drill anchor holes or
holes in concrete with the main unit in
the rotation only function.
Do not attempt to use the rotary
hammer in the rotation and hammering
function with the drill chuck and chuck
adaptor attached. This would seriously
shorten the service life of every
components of the machine.
4. When driving machine screws
In the same manner as the drill bit is
installed, install the driter bit to the drill
chuck holder.
Apply the driver bit to the groove of
screw head and turn on the switch to
tighten the screw.
CAUTION:
Exercise care not to excessively prolong
driving time, otherwise, the screws may
be damaged by excessive force.
Apply the rotary hammer perpendicularly
to the screw head when driving a screw;
otherwise, the screw head or bit will be
damaged, or driving force will not be fully
transferred to the screw.
12
Sleeve Ring
Fig. 12
Do not attempt to use the rotary
hammer in the rotation and hammering
function with drill chuck holder attached.
5. When driving wood screws
(1) Selecting a suitable driver bit
Employ phillips screws, if possible, since
the driver bit easily slips off the heads of
slotted-head screws.
(2) Driving in wood screws
Prior to driving in wood screws, make
pilot holes suitable for them in the
wooden board. Apply the bit to the screw
head grooves and gently drive the screws
into the holes.
After rotating the rotary hammer at low
speed for a while until a wood screw in
partly driven into the wood, squeeze the
trigger more strongly to obtain the
optimum driving force.
CAUTION:
Exercise care in preparing a pilot hole
suitable for the wood screw taking the
hardness of the wood into consideration.
Should the hole be excessively small or
shallow, requiring much power to drive
the screw into it, the thread of the wood
screw may sometimes be damaged.
6. Hammering only
This rotation hammer can be set to
hammering only mode by pressing the
push button and turning the change lever
to the mark with the drill bit holder
installed. (Fig. 13)
(1) Mount the bull point or cold chisel.
(2) Press the push button and set the change
lever to middle of
(Fig. 14)
Change lever
Push
button
Fig. 13
mark and mark.