Manual Hitachi DN 12 DY (page 8 of 56) (English, German, Dutch, French, Italian, Portuguese, Spanish)

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(2) Regarding the temperatures of the rechargeable

battery.

The temperatures for rechargeable batteries are as

shown in the table below, and batteries that have

become hot should be cooled for a while before

being recharged.

Table 2 Recharging ranges of batteries

(3) Regarding recharging time

Depending on the combination of the charger and

batteries, the charging time will become as shown

in Table 3.

Table 3 Charging time (At 20°C)

NOTE

The charging time may vary according to

temperature and power source voltage.

4. Disconnect the charger’s power cord from the

receptacle

5. Hold the charger firmly and pull out the battery

NOTE

After operation, pull out batteries from the charger

first, and then keep the batteries properly.

Regarding electric discharge in case of new

batteries, etc.

As the internal chemical substance of new batteries

and batteries that have not been used for an

extended period is not activated, the electric

discharge might be low when using them the first

and second time. This is a temporary phenomenon,

and normal time required for recharging will be

restored by recharging the batteries 2 – 3 times.

How to make the batteries perform longer.

(1) Recharge the batteries before they become

completely exhausted.

When you feel that the power of the tool becomes

weaker, stop using the tool and recharge its battery.

If you continue to use the tool and exhaust the

electric current, the battery may be damaged and

its life will become shorter.

(2) Avoid recharging at high temperatures.

A rechargeable battery will be hot immediately after

use. If such a battery is recharged immediately after

use, its internal chemical substance will deteriorate,

and the battery life will be shortened. Leave the

battery and recharge it after it has cooled for a

while.

CAUTION

⅜ If the batteries has been heated right after operation

(for due to sunlight, etc.), the charger's pilot lamp

may not light in red. In such a case, first let the

bettery cool, then start charging.

⅜ When the pilot lamp flickers in red (at 0.2-second

intervals), check for and take out any foreign objects

in the charger’s battery installation hole. If there are

no foreign objects, it is probable that the battery

or charger is malfunctioning. Take it to your

authorized Service Center.

⅜ Since the built-in micro computer takes about 3

seconds to confirm that the battery being charged

with UC14YFA is taken out, wait for a minimum of

3 seconds before reinserting it to continue charging.

If the battery is reinserted within 3 seconds, the

battery may not be properly charged.

PRIOR TO OPERATION

1. Setting up and checking the work environment

Check if the work environment is suitable by

following the precautions.

HOW TO USE

1. Mounting and dismounting of the bit

(1) Mounting the bit

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. 4).

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

Firmly grasp the ring and loosen the sleeve by

turning it toward the left (in the counter-clockwise

direction as viewed from the front) (See Fig. 4).

⅜ 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.

2. Confirm that the battery is mounted correctly

3. 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. 5) (The

and

marks are provided on the body).

4. Switch operation

⅜ When the trigger switch is depressed, the tool

rotates. When the trigger is released, the tool stops

(Fig. 6).

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.

⅜ When releasing the trigger of the switch,l the brake

will be applied for immediate stopping.

NOTE

⅜ A buzzing noise is produced when the motor is

about to rotate; This is only a noise, not a machine

failure.

Rechargeable Temperatures at which the

batteries battery can be recharged

EB1220BL –5°C – 60°C

EB1226HL, EB1230HL 0°C – 45°C

Charger

UC14YFA

Battery

EB1220BL Approx. 50 min.

EB1226HL Approx. 65 min.

EB1230HL Approx. 70 min.

01Eng_DN12DY_WE 1/22/09, 17:577

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Hitachi DN 12 DY Manual

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