Bedienungsanleitung Hitachi DH 25 PB (Seite 12 von 80) (Deutsch, Englisch, Holländisch, Französisch, Italienisch, Portugiesisch, Spanisch)

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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 rotary hammer can be set to rotation and

striking mode by rotating the change lever (DH25PB

only) fully counter-clockwise to

mark. (Fig. 5)

(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 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 a rebar, 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. 6.

3. Rotation only (DH25PB)

The rotary hammer can be set to rotation only

mode by rotating the change lever fully clockwise

mark. (Fig. 7)

To drill wood or metal material using the drill chuck

and chuck adapter (optional accessory), carry out

as follows.

Installing drill chuck and chuck adapter: (Fig. 8)

(1) Mount 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.

CAUTIONS:

⅜ Application of force more than necessary will not

only decelerate the working efficiency, but it will

deteriorate the tip edge of the drill bit and reduce

the service life of the rotary hammer as well.

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 each component of the

power tool.

4. When driving machine screws (Fig. 9)

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.

CAUTIONS:

⅜ Exercise care not to excessively prolong driving

time, otherwise, the screws may be damaged by

excessive force.

⅜ Apply the rotary hammer perpendicularly to the

screw head when driving the screw; otherwise, the

screw head or bit will be damaged, or driving force

will not be fully transferred to the screw.

⅜ Do not attempt to use the rotary hammer in the

rotation and striking function with the chuck adapter

and bit attached.

5. When driving wood screws (Fig. 9)

(1) Selecting a suitable driver bit

Recommended to employ cross-recessed screws,

since the driver bit easily slips off the heads of

slotted-head screws.

(2) Driving in wood screws

⅜ Prior to driving in wood screws, make pilot holes

suitable for them in the wooden board. Apply the

bit to the screw head recesses and gently drive the

screws into the holes.

⅜ After rotating the rotary hammer at low speed for

a while until the wood screw is partly driven into

the wood, squeeze the trigger more strongly to

obtain the optimum driving force.

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.

6. Using the stopper (Fig.10)

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

stopper into the mounting hole on the side handle.

(2) Adjust the stopper position according to the depth

of the hole and tighten the knob 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. 11)

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

adapter. (Fig. 11)

(3) Turn the switch ON, and drill a hole in 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 manual hammer

supporting on the rests. (Fig. 12)

HOW TO USE THE CORE BIT

(FOR LIGHT LOAD)

When boring penerating large holes use the core bit (for

light loads). At that time use with the center pin and the

core bit shank provided as optional accessories.

1. Mounting

CAUTION

Be sure to turn power OFF and disconnect the plug

from the receptacle.

(1) Mount the core bit to the core bit shank. (Fig. 13).

Lubricate the thread of the core bit shank to facilitate

disassembly.

(2) Mount the core bit to the rotary hammer (Fig. 14).

(3) Insert the center pin into the guide plate until it

stops.

(4) Engage the guide plate with the core bit, and turn

the guide plate to the left or the right so that it

does not fall even if it faced downward. (Fig. 15).

01Eng_DH25PA_WE 08/10/6, 16:3111

Hitachi DH 25 PB Seite 12

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