Manual Hitachi dv 14dmr (page 39 of 46) (English, Danish, Swedish, Norwegian, Finnish)

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5. 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.

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 impact 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 impact driver drill at LOW (low speed)

when using a machine screw.

NOTE

The use of the battery EB1426H, EB1430H, EB1826HL

and EB1830HL in a cold condition (below 0 degree

Centigrade) can sometimes result in the weakened

tightening torque and reduced amount of work. This,

however, is a temporary phenomenon, and returns

to normal when the battery warms up.

7. Mounting and dismounting of the bit

(1) Mounting the bit

Loosen the sleeve by turning it toward the left (in the

counterclockwise direction as viewed from the front)

to open the clip on the keyless chuck. After inserting

a driver bit, etc., into the keyless drill chuck, 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.

(2) Dismounting the bit

Loosen the sleeve by turning it toward the left (in the

counterclockwise direction as viewed from the front),

and then take out the bit etc (See Fig. 8).

NOTE

If the sleeve is tightened in a state where the clip of

the keyless chuck is opened to a maximum limit, a

click noise may occur. This is the noise that occurs

when the loosening of the keyless chuck is prevented

and is not a malfunction.

CAUTION

⅜ When it is no longer possible to loosen the sleeve,

use a vise or similar instrument to secure the bit. Set

the clutch mode between 1 and 7 and then turn the

sleeve to the loose side (left side) while operating the

clutch. It should be easy now to loosen the sleeve.

8. Automatic spindle-lock mechanism

This unit has automatic spindle-lock mechanism for

quick bit changes.

9. Confirm that the battery is mounted correctly

Table 5

6. How to select tightening torque and rotational speed

Work Suggestions

Brick

Drilling

Wood

Use for drilling purpose.

Steel

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 8 mm or smaller nominal

diameter screws.

Brick

For 14 mm or smaller

diameters. (DV14DMR)

For 16 mm or smaller

diameters. (DV18DMR)

Drilling

Wood

For 45 mm or smaller

diameters. (DV14DMR)

For 50 mm or smaller

diameters. (DV18DMR)

Metal

For drilling with a metal

working drill bit.

For 6 mm or smaller

diameter screws.

For 4.8 mm or smaller

nominal diameter screws.

For 10 mm or smaller

diameters. (DV14DMR)

For 12 mm or smaller

diameters. (DV18DMR)

For 20 mm or smaller

diameters. (DV14DMR)

For 22 mm or smaller

diameters. (DV18DMR)

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Hitachi dv 14dmr Manual

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