Bedienungsanleitung Hitachi DH 25 DL (Seite 14 von 86) (Deutsch, Englisch, Holländisch, Französisch, Italienisch, Portugiesisch, Spanisch)

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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.

HOW TO USE

CAUTION on lithium-ion battery

To extend the lifetime, the lithium-ion battery equips with

the protection function to stop the output. Therefore, if

the tool is overloaded, the motor may stop. However, this

is not the trouble but the result of protection function. In

this case, release the switch of tool and eliminate the

causes of overloading.

1. Switch operation

⅜ When the switch trigger is depressed, the tool rotates.

When the switch trigger is released, the tool stops.

⅜ The rotational speed of the rotary hammer can be

controlled by varying the amount that the switch

trigger is pulled. Speed is low when the switch

trigger is pulled slightly and increases as the switch

trigger is pulled more.

⅜ When releasing the switch trigger, the brake will

be applied for immediate stopping.

2. Rotation + Hammering

Align the “

” mark with the “ ” mark by

rotating the change lever to set the “Rotation +

Hammering” function. (Fig. 8-a, Fig. 8-b)

(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 just sufficient.

CAUTION:

When the drill bit touches construction iron bar, the

bit will stop immediately and the rotary hammer

will react to revolve. Therefore please grip the side

handle and handle tightly as shown in Fig. 10.

3. Rotation only

Align the “

” mark with the “ ” mark by rotating

the change lever to set the “Rotation only” function.

(Fig. 8-a, Fig. 8-b)

To drill a wood or metal material using the optional

drill chuck and chuck adapter, proceed as follows.

Installing drill chuck and chuck adapter: (Fig. 11)

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

(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 work at all, but will deteriorate

the tip edge of the drill bit and reduce the

service life of the rotary hammer in addition.

⅜ Drill bit 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 use the rotary hammer in the

rotation and striking mode with the drill chuck

and chuck adapter attached. This would seriously

shorten the service life of every component of

the machine.

4. When driving wood screws (Fig. 13)

(1) Selecting a suitable driver bit

Employ plus-head screws, if possible, since the driver

bit easily slips off the heads of slotted-head screws.

(2) Tightening wood screws

Prior to tightening 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 in the holes.

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.

5. Hammering only

Align the “

” mark with the “ ” mark by rotating

the change lever to set the “Hammering only”

function. (Fig. 8-a)

(1) Mount the bull point or cold chisel.

6. Using depth gauge (Fig. 12)

(1) Loosen the knob on the side handle, and insert the

depth gauge into the mounting hole on the side

handle.

(2) Adjust the depth gauge position according to the

depth of the hole and tighten the knob bolt securely.

7. How to use the drill bit (taper shank) and the taper

shank adapter

(1) Mount the taper shank adapter to the rotary hammer.

(Fig. 14)

(2) Mount the drill bit (taper shank) to the taper shank

adapter. (Fig. 14)

(3) Turn the switch ON, and drill a hole to prescribed

depth.

(4) To remove the drill bit (taper shank), insert the

cotter into the slot of the taper shank adapter and

strike the head of the cotter with a hammer

supporting on the rest. (Fig. 15)

8. Switching between the “SAVE“ and the “POWER“

modes

The hammering force of the hammer can be

increased or decreased to conform with intended

usage, by operating the shift knob as per Fig. 16.

Adjust the force to match the usage intended.

(1) “SAVE“ mode ... decreased hammering force

This can prevent thin drill bits which are less than

5 mm in diameter, from being bent or broken.

(2) “POWER“ mode ... increased hammering force

⅜ This can be used to speedily and efficiently drill

holes when the drill bits which are being used are

greater than 5 mm in diameter.

⅜ This can be used to drill holes into wood or metal.

CAUTION:

Do not drill holes in wood with the “SAVE“ mode.

There is a likelihood that the motor will burn out

because it can easily lock up due to the low power

LUBRICATION

Low viscosity grease is applied to this rotary hammer so

that it can be used for a long period without replacing the

grease. Please contact the nearest service center for

01Eng_DH25DL_WE 08/4/30, 09:3313

Hitachi DH 25 DL Seite 14

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