HIKOKI DH 28PEC 취급 지침 매뉴얼 - 페이지 9

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2. How to bore (Fig. 20)

(1) Connect the plug to the power source.

(2) A spring is installed in the center pin.

Push it lightly to the wall or the ﬂ oor straight.

Connect the core bit tip ﬂ ush to the surface and start

operating.

(3) When boring about 5 mm in depth the position of the hole

will be established. Bore after that removing the center

pin and the guide plate from core bit.

CAUTION

When removing the center pin and the guide plate,

turn OFF the switch and disconnect the plug from the

receptacle.

Application of excessive force will not only expedite

the work, but will deteriorate the tip edge of the drill bit,

resulting in reduced service life of the rotary hammer.

3. Dismounting (Fig. 21)

Remove the core bit shank from the rotary hammer and

strike the head of the core bit shank strongly two or three

times with a hammer holding the core bit, then the thread

becomes loose and the core bit can be removed.

SELECT OPERATION MODE

Pressing the changeover switch allows the selection of

rotation speed and the auto stop function.

○ Rotation speed (Low mode/Normal mode)

Select either Low mode or Normal mode and operate the

tool in the selected speed.

○ Auto stop mode (on/oﬀ )

This product is equipped with an auto stop function to

support continuous drilling work. The function features a

memory mode for storing the work time for drilling from

switch ON to switch OFF, and an auto stop mode that

automatically stops the motor from the second drilling

onward should the work exceed the stored work time

while the switch is ON.

Fig. 20

Core bit shank

Fig. 21

No-load

speed

Full-load

impact

rate

AUTO STOP FUNCTION

In selection mode, pressing the button for longer than two

seconds will move to memory mode.

(At the same time the auto stop lamp will blink.)

Conduct drilling when the auto stop lamp is ﬂ ashing. The

time between switching ON and switching OFF is stored by

the tool.

(At the same time, the auto stop lamp will light up.)

Conduct drilling when the auto stop lamp is ﬂ ashing.

Continuous drilling is possible as the memory storage time

will be recorded by the tool until the auto stop function's auto

stop mode is cancelled.

The auto stop function is cancelled by pressing the

changeover switch once again for over two seconds.

(At the same time, the auto stop lamp will switch oﬀ .)

CAUTION

○ Switch ON the tool once you place the tip of the tool on

the work material.

○ The rotation speed and the level at which the switch is

pulled during drilling is not stored to memory.

○ Fully carry out drilling in one go during auto stop mode.

○ The motor will stop even if you switch OFF within the

memory storage time.

○ When you switch OFF within the memory storage time,

the count will be reset. If you rework a task in which a

hole has been partially drilled, the memory storage time

will be fully recounted.

Low mode

Normal mode

700

3170

Fig. 22

Fig. 23

950

4300