Manual Hitachi DV 14 DL (page 15 of 104) (German, Dutch, French, Italian, Portuguese, Spanish)

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CAUTION

⅜ The selection examples shown in Table 8 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 Li-ion battery 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. 10).

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. 10).

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

10. Check the rotational direction

The bit rotates clockwise (viewed from the rear side)

by pushing the R-side of the selector button.

The L-side of the selector button is pushed to turn the

bit counterclockwise (See Fig. 11). (The

and

marks are provided on the selector button.)

CAUTION

⅜ Always use this unit with clockwise rotation, when

using it as an impact drill.

11. Switch operation

⅜ When the trigger switch is depressed, the tool rotates.

When the trigger is released, the tool stops.

⅜ The rotational speed of the drill can be controlled by

varying the amount that the trigger switch is pulled.

Speed is low when the trigger switch is pulled slightly

and increases as the trigger switch is pulled more.

NOTE

⅜ A buzzing noise is produced when the motor is about

to rotate. This is only a noise, not a machine failure.

12. For drilling into brick

Excessive pressing force never increases drilling

speed. It will not only damage the drill tip or reduce

working efficiency, but could also shorten the service

life of drill bit. Operate the impact driver drill within

10-15 kg pressing force while drilling into brick.

13. Using the hook

CAUTION

⅜ When using the hook, pay sufficient attention so that

the main equipment does not fall. If the tool falls,

there is a risk of accident.

Table 8

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. (DV14DL)

For 16 mm or smaller

diameters. (DV18DL)

Drilling

Wood

For 45 mm or smaller

diameters. (DV14DL)

For 50 mm or smaller

diameters. (DV18DL)

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. (DV14DL)

For 12 mm or smaller

diameters. (DV18DL)

For 20 mm or smaller

diameters. (DV14DL)

For 22 mm or smaller

diameters. (DV18DL)

6. How to select tightening torque and rotational speed

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Hitachi DV 14 DL Manual

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