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Inserting round shank applications

tools (DH1826DC)

Switch operation

Setting the speed

Auto stop function

How to use the LED light

Cleaning of the battery installation

compartment

Installing the side handle

Selecting accessories*

*1 For details on how to use the Dust extractor system, refer

to the system's instruction manual.

*2 If it is hard to pull out the drill chuck holder or the drill bit

holder, align the change lever with the

the lock grip.

*3 For detailed information regarding each tool, contact a

HiKOKI authorized service center.

SELECT OPERATION MODE

Pressing the changeover switch allows the selection of

rotation speed and the auto stop function.

○ Rotation speed (Low mode/Normal mode) (Fig. 18)

Select either Low mode or Normal mode and operate the

tool in the selected speed.

○ Auto stop mode (on/oﬀ ) (Fig. 19)

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.

AUTO STOP FUNCTION

In selection mode, pressing the button for longer than two

seconds will move to memory mode. (Fig. 19)

(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.

○ The auto stop function will remain active until canceled.

―

mark and turn

REACTIVE FORCE CONTROL

This product is equipped with a Reactive Force Control

(RFC) feature that reduces jerking of the tool body.

If the tool bit is suddenly overburdened, any jerking of the

tool body is reduced by activation of the slip clutch or by

stopping of the motor by the sensor built into the tool body.

If the motor is stopped because of overburdening detection

by the controller, the display lamp will blink while the switch

is pulled. In addition, the lamp will continue blinking for

approximately three seconds after the switch is released.

The motor will remain stopped while the lamp is blinking.

(Fig. 23)

17, 18

Because the RFC feature may not activate or its performance

may be insuﬃ cient depending on the working environment

and conditions, be careful not to suddenly overburden the

tool bit while operating.

● Possible causes of sudden overburdening

Tool bit biting into material

Impact against nails, metal or other hard objects

Tasks involving prying or any excess application of

pressure, etc.

Also, other causes include any combination of the

aforementioned.

● When the reactive force control (RFC) is triggered

When the RFC is triggered and the motor stops, turn

oﬀ the tool's switch and remove the cause of the

overburdening before continuing operation.

Fig. 23