Prior To Operation - Hitachi Koki DH 24PC3 Instrucciones De Manejo

APPLICATIONS
Rotation and hammering function
○ Drilling anchor holes
○ Drilling holes in concrete
○ Drilling holes in tile
Rotation only function
○ Drilling in steel or wood
(with optional accessories)
○ Tightening
machine
(with optional accessories)
Hammering only function
○ Light-duty chiseling of concrete, groove digging and
edging.

PRIOR TO OPERATION

1. Power source
Ensure that the power source to be utilized conforms
to the power requirements specifi ed on the product
nameplate.
2. Power switch
Ensure that the power switch is in the OFF position. If
the plug is connected to a power receptacle while the
power switch is in the ON position, the power tool
will start operating immediately, which could cause
a serious accident.
3. Extension cord
When the work area is removed from the power
source, use an extension cord of suffi cient thickness
and rated capacity. The extension cord should be
kept as short as practicable.
4. Mounting the drill bit (Fig. 1)
CAUTION:
To prevent accidents, make sure to turn the switch
off and disconnect the plug from the receptacle.
NOTE:
When using tools such as bull points, drill bits, etc.,
make sure to use the genuine parts designated by
our company.
(1) Clean the shank portion of the drill bit.
(2) Insert the drill bit in a twisting manner into the tool
holder until it latches itself. (Fig. 1)
(3) Check the latching by pulling on the drill bit.
(4) To remove the drill bit, fully pull the grip in the direction
of the arrow and pull out the drill bit. (Fig. 2)
5. Installation of dust cup or dust collector (B)
(Optional accessories) (Fig. 3, Fig. 4)
When using a rotary hammer for upward drilling
operations attach a dust cup or dust collector (B) to
collect dust or particles for easy operation.
○ Installing the dust cup
Use the dust cup by attaching to the drill bit as shown
in Fig. 3.
When using a bit which has big diameter, enlarge the
center hole of the dust cup with this rotary hammer.
○ Installing dust collector (B)
When using dust collector (B), insert dust collector
(B) from the tip of the bit by aligning it to the groove
on the grip. (Fig. 4)
CAUTION:
○ The dust cup and dust collector (B) are for exclusive
use of concrete drilling work. Do not use them for
wood or metal drilling work.
○ Insert dust collector (B) completely into the chuck
part of the main unit.
screws, wood screws
○ When turning the rotary hammer on while dust
collector (B) is detached from a concrete surface,
dust collector (B) will rotate together with the drill
bit. Make sure to turn on the switch after pressing the
dust cup on the concrete surface. (When using dust
collector (B) attached to a drill bit that has more than
190 mm of overall length, dust collector (B) cannot
touch the concrete surface and will rotate. Therefore
please use dust collector (B) by attaching to drill bits
which have 166 mm, 160 mm, and 110 mm overall
length.)
○ Dump particles after every two or three holes when
drilling.
○ Please replace the drill bit after removing dust
collector (B).
6. Selecting the driver bit
Screw heads or bits will be damaged unless a bit
appropriate for the screw diameter is employed to
drive in the screws.
7. Confi rm the direction of bit rotation (Fig. 5)
The bit rotates clockwise (viewed from the rear
side) by pushing the R-side of the push button. The
L-side of the push button is pushed to turn the bit
counterclockwise.
HOW TO USE
CAUTION:
To prevent accidents, make sure to turn the switch
off and disconnect the plug from the receptacle when
the drill bits and other various parts are installed or
removed. The power switch should also be turned
off during a work break and after work.
1. Switch operation
The rotation speed of the drill bit can be controlled
steplessly by varying the amount that the trigger
switch is pulled. Speed is low when the trigger
switch is pulled slightly and increases as the switch
is pulled more. Continuous operation may be
attained by pulling the trigger switch and depressing
the stopper. To turn the switch OFF, pull the trigger
switch again to disengage the stopper, and release
the trigger switch to its original position.
However, the switch trigger can only be pulled in
halfway during reverse and rotates at half the speed
of forward operation.
The switch stopper is unusable during reverse.
2. Rotation + hammering
This rotary hammer can be set to rotation and
hammering mode by pressing the push button and
turning the change lever to the
(1) Mount the drill bit.
(2) Pull the trigger switch after applying the drill bit tip
to the drilling position. (Fig. 7)
(3) Pushing the rotary hammer forcibly is not necessary
at all. Pushing slightly so that drill dust comes out
gradually is suffi cient.
CAUTION:
When the drill bit touches construction iron bar, the
bit will stop immediately and the rotary hammer will
react to revolve. Therefore grip the side handle and
handle tightly as shown in Fig. 7.
3. Rotation only
This rotary hammer can be set to rotation only mode
by pressing the push button and turning the change
lever to the mark (Fig. 8).
To drill wood or metal material using the drill chuck
and chuck adapter (optional accessories), proceed as
follows.
Installing drill chuck and chuck adapter: (Fig. 9)
English
mark (Fig. 6).
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