909 H144L1 Buku Petunjuk - Halaman 13

Jelajahi secara online atau unduh pdf Buku Petunjuk untuk Bor 909 H144L1. 909 H144L1 17 halaman. 14.4v sds plus pneumatic action variable speed hammer drill driver

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Avoid charging or storing your battery in temperatures

below 0ºC and above 40ºC.

Using the drill

Trigger switch

This trigger switch is an

electronic variable speed control

which enables the user to

vary the speed continuously.

The speed varies according

to how far the trigger switch

is depressed. The further it is

depressed the faster the chuck will rotate and

the lighter it is depressed, the slower it will rotate.

To stop the drill, release the trigger switch.

Note.

The variable Speed control fitted to this drill is NOT

intended to be used for long periods of time during the

operation of the task being performed. Use the variable

speed to start drilling and screwing tasks, and then fully

depress the trigger once the task has started.

CAUTION.

Extended use of the variable speed under load will

overload and then permanently damage the speed control.

Forward/reverse switch

Note.

You can only change the direction of rotation of the

drill using the forward/reverse switch when the trigger is

NOT depressed.

This switch (3) will allow you to change the direction of the

motor while the trigger switch is not depressed.

Drilling uses the forward mode. The reverse mode is

intended for the removal of screws and assisting to remove

jammed drill bits.

Hammer / drill selector

The hammer / drill selector on the side of the housing allows

the drilling mode to be altered between pneumatic hammer

drilling and drilling / screwdriving.

To change mode, rotate the selector to the top position

marked . This position is used for pneumatic hammer

drilling.

Rotate the selector to the down position marked

wood and steel drilling. This position should also be used for

screw driving.

Pneumatic hammer drilling

Hammer drilling is the prime function of this drill. Selection

of the hammer function provides highly efficient, fast and

easy operational performance.

To select hammer function, move

the selector upwards to align with

the hammer symbol . Select

forward direction on the forward

/ reverse selector.

The drill bit used for drilling

concrete, masonry etc is a

tungsten carbide tipped drill bit.

Do not use High Speed Steel

(HSS) drill bits for drilling these

types of materials.

After fitting the drill bit, locate the

position of the hole to be drilled.

Wear safety glasses, ear

protection and a dusk mask

when drilling.

Position the drill bit on the centre

point for the hole and pull the

trigger slowly to start the drilling

operation. Increase the speed

of the drill as the centre point is

marked and the drill becomes

located. When the side flutes

of the drill bit have entered the

work piece, the drill should be at

full speed. As the hole is being

drilled, the trigger should be fully depressed. Constant

loading under variable speed can shorten the life of the

variable speed control.

When using the pneumatic hammer mode the drill will

perform best when the drill bit is NOT being forced. The

for