Bedienungsanleitung Hitachi dv 24 dv (Seite 33 von 38) (Englisch, Dänisch, Schwedisch, Norwegisch, Finnisch)

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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 short 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 been cooled for

a while.

CAUTION

⅜ If the battery has been heated right after operation

(or due to sunlight, etc.), the charger’s pilot lamp

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

battery cool, then start charging.

⅜ When the pilot lamp flickers in red quickly (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 UC24YFB 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. Mounting and dismounting of the bit.

(1) Mounting the bit

After inserting a drill bit into the keyless 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 moreover.

(2) Dismounting the bit

Firmly grasp the ring and loosen the sleeve by

turning it toward the left (in the counterclockwise

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

2. Selecting the appropriate drill bit

⅜ When boring concrete or brick

Use the drill bits specified in the Optional

Accessories.

⅜ When boring metal or plastic

Use an ordinary metalworking drill bit.

⅜ When boring wood

Use an ordinary woodworking drill bit.

However, when drilling 6.5 mm or smaller holes,

use a metalworking drill bit.

3. Confirm that the battery is mounted correctly.

4. Confirm the direction of bit rotation (Fig. 5)

The bit rotates clockwise (viewed from the rear

side) by pushing the R-side of the push button. (Fig.

5-a)

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

bit counterclockwise. (Fig. 5-b)

The motor does not rotate if the push button is set

to the center position. (Fig. 5-c)

5. Installing the side handle and handle joint (Fig. 6)

A Side handle and handle joint can be installed on

either side of the tool for right or left handed use.

To install the side handle and handle joint, thread

it into the socket on the desired side of the tool

and tighten it securely.

6. Attaching the angle unit. (Optional accessory)

(1) Removing keyless chuck from impact drill (Fig. 7)

⅜ To remove the keyless chuck from the impact drill,

open the keyless chuck jaws as far as possible and

turn out the locking screw (left hand thread). This

screw locks the keyless chuck to the spindle. Install

the hex. bar wrench into the keyless chuck. Place

the accessory wrench in the hexagonal opening of

the angle unit spindle. Tightly restrain the impact

drill on a firm base. Turn the keyless chuck until

the wrench is at about a 30° angle to the bench

top and strike the wrench sharply with a hammer

so the keyless chuck turns in the counterclockwise

direction (viewed from the front side). This should

loosen the keyless chuck from the spindle which

has a right hand thread and you will be able to

remove the keyless chuck by hand.

CAUTION:

If the keyless chuck cannot be removed by striking

the wrench, don’t strike the wrench forcibly and

send the impact drill to a HITACHI AUTHORIZED

SERVICE CENTER.

(2) Attaching the angle unit.

⅜ After removing the keyless chuck, engage the

coupling to the impact drill spindle. Fit the joint

sleeve to the gear cover, attach the angle unit to

the other end of the joint sleeve, and turn the angle

unit slightly in either direction so the hex. hole in

the coupling engages the hex. portion of the angle

unit spindle. Adjust the direction of the angle unit

and tighten the joint sleeve by clamping bolts.

Tighten two clamping bolts equally and gradually

in turn with a torque of 686-784N·cm (70-80kgf·cm)

(extent of force which can be subjected by only a

wrist with the open end wrench provided to tight

clamping bolts.). (Fig. 8)

⅜ To operate the angle unit at low speed, attach the

keyless chuck to the angle unit spindle at the side

marked “LOW” and secure the locking screw. At

this setting, the drilling speed is decreased to about

70% and the drilling torque is increased to about

150%. (Fig. 9)

⅜ To operate the angle unit at high speed, attach the

keyless chuck to the angle unit spindle at the side

marked “HIGH” and secure the locking screw. At

this setting, the drilling speed is increased to about

150% and the drilling torque is decreased to about

70%. (Fig. 9)

Hitachi dv 24 dv Seite 33

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