Manual Hitachi DH24DVCS (page 14 of 88) (English, German, Dutch, French, Italian, Portuguese, Spanish)

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English

Possible continuous

Bit dia. Depth drilling number (holes)

(mm) (mm) BSH2420

6.5 55

8.5 45

10.5 35

12.5 60 18

14.5 15

18 13

20 10

HOW TO USE

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 turning the change lever to

the

mark (Fig. 9).

(1) Mount the drill bit.

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

tip to the drilling position (Fig. 10).

(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. 10.

3. Rotation only

This rotary hammer can be set to rotation only

mode by turning the change lever to the

mark

(Fig. 11).

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. 12).

(1) Attach the drill chuck to the chuck adapter.

(2) The part of the SDS-plus shank is the same as the

drill bit. Therefore, refer to the item of “Mounting

the drill bit” for attaching it.

CAUTION

⅜ 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.

⅜ Drill bits may snap off while withdrawing the rotary

hammer from the drilled hole. For withdrawing, it

is important to use a pushing motion.

⅜ Do not attempt to drill anchor holes or holes in

concrete with the machine set in the rotation only

function.

⅜ Do not attempt to use the rotary hammer in the

rotation and striking function with the drill chuck

and chuck adapter attached. This would seriously

shorten the service life of every component of the

machine.

4. When driving machine screws (Fig. 13)

First, insert the bit into the socket in the end of

chuck adapter (D).

Next, mount chuck adapter (D) on the main unit

using procedures described in 4 (1), (2), (3), put the

tip of the bit in the slots in the head of the screw,

grasp the main unit and tighten the screw.

⅜ 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. 7)

CAUTION

⅜ 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.

⅜ Insert dust collector (B) completely into the chuck

part of the main unit.

⅜ 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

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.

⅜ Dump particles after every two or three holes when

drilling.

⅜ Please replace the drill bit after removing dust

collector (B).

4. 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.

5. Confirm the direction of bit rotation (Fig. 8)

The bit rotates clockwise (viewed from the rear

side) by pushing the R-side of the push button. (Fig.

8-a)

The L-side of the push button is pushed to turn the

bit counterclockwise. (Fig. 8-b)

6. Continuous drilling

The number of holes that can be drilled in concrete

after one recharge is shown in Table 4.

Table 4

These data are for the referential values. The number of

holes that can be drilled varies according to the sharpness

of the used bit or the conditions of the concrete being

drilled.

CAUTION

When using this unit continuously, the unit may

overheat, leading to damage in the motor and switch.

Please leave it without using it for approximately

15 minutes.

01Eng_DH24DVC(S)_WE 4/17/12, 9:2313

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Hitachi DH24DVCS Manual

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