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DH24PM
Инструкция по эксплуатации Страница: 12

Hitachi DH24PM [12/76] English

English

 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.

 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. Confirm 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.

8. Replacement of the drill chuck holder or the drill bit

holder

CAUTION

 Prevent accidents, make sure to turn the switch off

and disconnect the plug from the receptacle.

 To avoid an injury by accident, before replacing the

chuck, remove the tipped tool.

Remove or install the drill chuck or the drill bit holder

in the procedures below.

Turn the lock grip in the arrow direction shown on the

lock grip and pull out the drill chuck holder or the drill

bit holder.

(If it is hard to pull out the drill chuck holder or the drill

bit holder, align the change lever with the

mark and

turn the lock grip to pull it out.) (Fig. 6)

(1) Mesh the lock grip with spline.

(2) Push in the lock grip, turning it in the direction shown

on the lock grip.

(3) To confirm that the lock grip is securely installed,

tentatively try to pull out the lock grip (Fig. 7)

HOW TO USE

CAUTION

To prevent accidents, make sure to turn the switch

off and disconnect the plug from the receptacle when

the drill pits 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

mark with the drill

bit holder installed (Fig. 8).

(1) Mount the drill bit.

(2) Pull the trigger switch after applying the drill bit tip to

the drilling position (Fig. 9).

(3) Pushing the rotary hammer forcibly is not necessary

at all. Pushing slightly so that drill dust comes out

gradually is sufficient.

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. 9.

3. Rotation only

This rotation hammer can be set to rotation only

mode by pressing the push button and turning the

change lever to the

mark with the drill chuck holder

installed. (Fig. 10)

CAUTION

 Prevent accidents, make sure to turn the switch off

and disconnect the plug from the receptacle.

 When installing or removing the drill bit, be careful

not to hurt hands with the drill bit.

(1) Installation

After inserting the drill bit in the drill chuck holder,

hold firmly the ring by hand and tighten the sleeve by

turning it clockwise (in the direction of “← GRIP.ZU”)

If loosened in use, tighten strongly the sleeve. The

harder you tighten the sleeve, the stronger the

gripping force becomes.

(2) Removal

Hold firmly the ring by hand and loosen the sleeve by

turning it counterclockwise in the direction of

(“OPEN.AUF.→”).

CAUTION

 Application of force more than necessary will not

only expedite the work, but will deteriorate the tip

edge of the drill bit and reduce the service life of the

rotary hammer in addition.

Hitachi DH24PM [12/76] English

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