Manual Hitachi DV14DBEL (page 14 of 84) (English, German, Dutch, French, Italian, Portuguese, Spanish)

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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 tightening torque is too

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

using a machine screw.

NOTE

⅜ The use of the 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.

⅜ When using the unit as an impact drill, prolonged

operation of 5 minutes or more will result in internal

heat which may cause a repeated noise other than

the sound normally emitted by the motor. This does

not indicate a malfunction.

Discontinuing use of the unit and allowing its internal

temperature to cool down will eliminate the noise.

For prolonged use, allow the unit to cool down

periodically.

7. Using the hook

The hook is used to hang up the power tool to your

waist belt while working.

CAUTION

⅜ When using the hook, hang up the power tool firmly

not to drop accidentally.

If the power tool is dropped, it may lead to an accident.

⅜ When carrying the power tool with hooked to your

waist belt, do not fit any bit to the tip of power tool. If

the sharp bit such as drill is fitted to the power tool

when carrying it with hooked to your waist belt, you

will be injured.

⅜ Install securely the hook. Unless the hook is securely

installed, it may cause an injury while using.

(1) Removing the hook.

Remove the screws fixing the hook with Phillips screw

driver. (Fig. 9)

(2)

Replacing the hook and tightening the screws.

Install securely the hook in the groove of power tool

and tighten the screws to fix the hook firmly. (Fig. 10)

8. Using the light

Pull the trigger switch to light up the light. The light

keeps on lighting while the trigger switch is being

pulled. The light goes out after releasing the trigger

switch. (Fig. 11)

(The light automatically goes out 10 seconds after

releasing the trigger switch.)

CAUTION

Do not expose directly your eye to the light by looking

into the light.

If your eye is continuously exposed to the light, your

eye will be hurt.

9. 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. 12)

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. 12)

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

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.

10. Automatic spindle-lock mechanism

This unit has automatic spindle-lock mechanism for

quick bit changes.

11. Confirm that the battery is mounted correctly

12. 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. 13) (The

and

marks are provided on the body.)

CAUTION

Always use this unit with clockwise rotation, when

using it as an impact drill.

13. 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

A buzzing noise is produced when the motor is about

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

14. 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.

OPERATIONAL CAUTIONS

⅜ Resting the unit after continuous work

(1) The power tool is equipped with a temperature

protection circuit to protect the motor.

Continuous bolt-tightening work may cause the

temperature of the unit to rise, activating the

temperature protection circuit and automatically

stopping operation.

If this happens, allow the power tool to cool before

resuming use.

(2) After use for continuous tightening wood screw

works, rest the unit for 15 minutes or so when

replacing the battery. The temperature of the motor,

switch, etc., will rise if the work is started again

immediately after battery replacement, eventually

resulting in burnout.

01Eng_DV14DBEL_WE.p65 6/12/13, 14:5414

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Hitachi DV14DBEL Manual

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