Manual Hitachi ds 12dvf2 (page 33 of 41) (English, Danish, Swedish, Norwegian, Finnish)

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English

(2) Tightening torque indication

The tightening torque differs depending on the type

of screw and the material being tightened.

The unit indicates the tightening torque with the

numbers “1, 3, 5 ... 22” on the cap, and the black

dots. The tightening toque at position “1” is the

weakest and the torque is strongest at the highest

number. (See Fig. 4)

(3) Adjusting the tightening torque

Rotate the cap and line up the numbers “1, 3, 5,

... 22” on the cap, or the black dots, with the triangle

mark on the outer body. Adjust the cap in the weak

or the strong torque direction according to the

torque you need.

CAUTION:

⅜ The motor rotation may be locked to cease while

the unit is used as drill. While operating the driver

drill, take care not to lock the motor.

⅜ Too long hammering may cause the screw broken

due to excessive tightening.

3. Change rotation speed

Operate the shift knob to change the rotational

Work Suggestions

Wood

Drilling Steel Use for drilling purpose.

Aluminum

Machine screw Use the bit or socket matching the screw diameter.

Driving

Wood screw Use after drilling a pilot hole.

Table 4

Use Cap Position

Rotating speed selection (Position of the shift knob)

LOW (Low speed) HIGH (High speed)

Machine screw 1 – 22

For 4 mm or smaller

diameter screws.

Driving

Wood screw 1 –

For 5.5 mm or smaller

nominal diameter screws.

Drilling

Wood

For 18 mm or smaller

diameters. (DS9DVF2)

For 21 mm or smaller

diameters. (DS12DVF2)

For 25 mm or smaller

diameters. (DS14DVF2)

Metal

For drilling with a metal

working drill bit.

For 6 mm or smaller

diameter screws.

For 3.8 mm or smaller

nominal diameter screws.

For 12 mm or smaller

diameters.

speed. Move the shift knob in the direction of the

arrow (see Figs. 6 and 7).

When the shift knob is set to “LOW”, the drill

rotates at a low speed. When set to “HIGH”, the

drill rotates at a high speed.

CAUTION:

⅜ When changing the rotational speed with the shift

knob, confirm that the switch is off.

Changing the speed while the motor is rotating will

damage the gears.

⅜ When setting the shift knob to “HIGH” (high speed)

and the position of the cap is “17” to “22”, it may

happen that the clutch does not engaged and that

the motor is locked. In such a case, please set the

shift knob to “LOW” (low speed).

⅜ If the motor is locked, immediately turn the power

off. If the motor is locked for a while, the motor

or battery may be burnt.

4. The scope and suggestions for uses

The usable scope for various types of work based

on the mechanical structure of this unit is shown

in Table 4.

5. How to select tightening torque and rotational speed

Table 5

CAUTION:

⅜ The selection examples shown in Table 5 should

be considered as general standard. As different

types of tightening screws and different materials

to be tightened are used in actual works proper

adjustments are naturally necessary.

⅜ When using the driver drill with a machine screw

at HIGH (high speed), a screw may damage or a

bit may loose due to the tightning torque is too

strong. Use the driver drill at LOW (low speed)

when using a machine screw.

6. Mounting and dismounting of the bit

(1) After inserting a driver bit, etc. into the keyless drill

chuck, firmly grasp the ring and tighten the sleeve

by turning it toward the right (in the clockwise

direction as viewed from the front). (See Fig. 8)

⅜ If the sleeve becomes loose during operation, tighten

it further. The tightening force becomes stronger

when the sleeve is tightened additionally.

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Hitachi ds 12dvf2 Manual

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