Prior To Operation; How To Use - Hitachi DH 25PA Handling Instructions Manual

7. Dust cup and Dust collector (B)
Dust cup
Optional accessories are subject to change without notice.
APPLICATIONS
Rotation and striking 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 screws, wood screws
(with optional accessories)

PRIOR TO OPERATION

1. Power source
Ensure that the power source to be utilized conforms
to the power requirements specified on the product
nameplate.
2. Power switch
Ensure that the power switch is in the OFF position.
If the plug is connected to a 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 sufficient thickness
and rated capacity. The extension cord should be
kept as short as practicable.
4. Mounting the drill bit (Fig. 1)
(1) To attach a drill bit (SDS-plus shank), fully pull the
grip in the direction of the arrow as shown in Fig.
1 and insert the drill bit as far as it will go while
manually turning.
(2) By releasing the grip, the drill bit will be secured.
(3) To remove the drill bit, fully pull the grip in the
direction of the arrow and pull out the drill bit.
5. Installation of dust cup (standard accessory) or
dust collector (B) (Optional accessory) (Fig. 2,
Fig. 3)
When using a hammer drill 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. 2.
When using a bit which has big diameter, enlarge
the center hole of the dust cup with this hammer
drill.
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. 3)
Dust collector (B)
8. Hammer grease A
500 g (in a can)
70 g (in a green tube)
30 g (in a green tube)
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.
When turning the hammer drill 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 but rotates.
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 drilling.
Please replace the drill bit after removing dust
collector (B).
6. Selecting a driver bit
Screw heads or bits will be damaged should an
inappropriate bit for the screw diameter be employed
to drive in the screws.

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.
2. Rotation + striking (DH25PA and DH25PB)
This hammer drill can be set to rotation and striking
mode by rotating the change lever (DH25PB only)
fully counter-clockwise to
(1) Mount the drill bit.
(2) Pull the trigger switch after applying the drill bit
tip to the drilling position. (Fig. 6)
(3) Pushing the hammer drill forcibly is not necessary
at all. Pushing slightly so that drill dust comes out
gradually is sufficient.
CAUTION:
When the drill bit touches a rebar, the bit will stop
immediately and the hammer drill will react to
revolve. Therefore grip the side handle and handle
tightly as shown in Fig. 6.
mark. (Fig. 5)
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