Bedienungsanleitung Hitachi DH28PC (Seite 12 von 72) (Deutsch, Englisch, Holländisch, Französisch, Italienisch, Portugiesisch, Spanisch)

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APPLICATIONS

Rotation and hammering function

⅜ Drilling anchor holes

⅜ Drilling holes in concrete

⅜ Drilling holes in tile

Rotation only function

⅜ Drilling in steel or wood

(with optional accessories)

⅜ Tightening machine screws, wood screws

(with optional accessories)

Hammering only function

⅜ Light-duty chiselling of concrete, groove digging

and edging.

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)

CAUTION

To prevent accidents, make sure to turn the switch

off and disconnect the plug from the receptacle.

NOTE

When using tools such as bull points, drill bits, etc.,

make sure to use the genuine parts designated by

our company.

(1) Clean the shank portion of the drill bit.

(2) Insert the drill bit in a twisting manner into the tool

holder until it latches itself (Fig. 1).

(3) Check the latching by pulling on the drill bit.

(4) To remove the drill bit, fully pull the grip in the

direction of the arrow and pull out the drill bit (Fig.

2).

5. Installation of dust cup or dust collector (B)

(Optional accessories) (Fig. 3, Fig. 4)

When using a rotary hammer for upward drilling

operations attach a dust cup or dust collector (B)

to collect dust or particles for easy operation.

⅜ 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.

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. 4).

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

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.)

⅜ Dump particles after every two or three holes when

drilling.

⅜ 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. Selecting the function mode

You can switch functions to the 3 modes of

“hammering only, “rotation + hammering”, and

“rotation only” by turning the change lever while

pressing the push button. Set the ▲ mark position

of the change lever to that of the mode to be used.

CAUTION:

⅜ Before operating the change lever, check and make

sure that the motor has stopped.

A failure can occur if it is operated while the motor

is running.

⅜ To operate the change lever, press the push button,

and release the lock of the change lever. Also, check

and make sure after operation that the push button

has returned and that the change lever has been

locked.

⅜ Switch the change lever without mistake. If it is

used at a position halfway, there is a fear that the

service life of the switching mechanism may be

shortened.

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.

NOTE:

Ensure that the wing bolt in the side handle is

properly tightened before using the tool.

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.

However, the switch trigger can only be pulled in

halfway during reverse and rotates at half the speed

of forward operation.

01e_DH28PC_WE.p65 5/18/11, 9:4911

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