Manual Hitachi DS 12 DM (page 34 of 38) (English, Danish, Swedish, Norwegian, Finnish)

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English

CAUTIONS

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.

NOTE

The use of the battery EB1222HL and EB1230HL 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.

6. Using the hook

The hook can be installed on the right or left side and

the angle can be adjusted in 5 steps between 0° and

80°.

(1) Operating the hook

(a) Pull out the hook toward you in the direction of

arrow (A) and turn in the direction of arrow (B).

(Fig. 8)

(b) The angle can be adjusted in 5 steps (0°, 20°, 40°,

60°, 80°).

Adjust the angle of the hook to the desired position

for use.

(2) Switching the hook position

CAUTION:

Incomplete installation of the hook may result in

bodily injury when used.

(a) Securely hold the main unit and remove the screw

using a slotted head screwdriver or a coin. (Fig. 9)

(b) Remove the hook and spring. (Fig. 10)

securely fasten with screw. (Fig. 11)

NOTE:

Pay attention to the spring orientation. Install the

spring with larger diameter away from you. (Fig. 11)

(3) Using the bit holder

⅜ Installing the bit

Slide the bit from the side in the direction of Fig.

12, and then insert firmly until the groove on the

bit locks in the protruded section of the hook.

⅜ Removing the bit

Securely hold the main unit and pull out the bit by

holding the tip with your thumb. (Fig. 13)

CAUTION:

⅜ The bit may come loose from the hook and cause

bodily injury when reversing the direction of the bit

as shown in Fig. 12 or when using the driver with the

bit stored incomplete.

⅜ Only Hitachi OPTIONAL ACCESSORIES plus driver

bits (Bit No. 2; Code No. 992671, Bit No. 3; Code No.

992672) may be used. Do not use other bits since

they may come loose.

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. 14)

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 ect. (See Fig. 14)

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 11 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. 15). (The

and

marks are provided on the body.)

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.

MAINTENANCE AND INSPECTION

1. Inspecting the tool

Since use of as dull tool will degrade efficiency and

cause possible motor malfunction, sharpen or replace

the tool as soon as abrasion is noted.

2. Inspecting the mounting screws

Regularly inspect all mounting screws and ensure

that they are properly tightened. Should any of the

screws be loose, retighten them immediately. Failure

to do so could result in serious hazard.

3. Maintenance of the motor

The motor unit winding is the very "heart" of the

power tool.

Exercise due care to ensure the winding does not

become damaged and/or wet with oil or water.

4. Inspecting the carbon brushes (Fig. 16)

The motor employs carbon brushes which are

consumable parts. Since and excessively worn carbon

brush can result in motor trouble, replace the carbon

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Hitachi DS 12 DM Manual

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