Bedienungsanleitung Hitachi WH12DK (Seite 10 von 78) (Deutsch, Englisch, Holländisch, Französisch, Italienisch, Portugiesisch, Spanisch)

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This does not work for reverse rotation. Operation

continues until the switch trigger is released

regardless of the dial setting.

(2) Dial setting

Turn the dial and align the number center section

(depression) with the housing triangle mark on the

left side of the dial. The dial can not be set at positions

between numbers (Fig. 7).

The appropriate dial position depends on the screw

and tightening material type. Try test tightening a few

screws to adjust the dial to the appropriate setting.

NOTE

⅜ Do not move this dial during operation. Doing so can

cause malfunction.

⅜ For wood, the tightening state varies greatly with the

wood type, grain, knots, etc. For such work, it is

recommended that the stopper also be used.

5. How to install and use a stopper

For those using the stopper standard accessory

specifications

(1) Install the bit.

Install a Phillips bit with a total length (L dimension)

of 60-65 mm.

(2) Install the stopper, then fasten by tightening the wing

bolt (Fig. 8).

NOTE

⅜ Push the stopper securely all the way in until it makes

contact.If it not securely installed, this can cause the

tightening depth to change during work.

(3) Adjust the tightening depth (Fig. 9).

1 Pull the main unit lock sleeve in the A direction.

2 Turn the main unit stopper (A) and adjust how far

the bit sticks out.

3 Turning in the B direction retracts the bit and

turning in the C direction extends it.

4 Release the lock sleeve to lock the stopper (A).

(4) Tighten a few screws and check that the tightening

depth is just right.

6. Number of screws tightenings possible

Please refer to the table below for the number of screw

tightened possible with one charge.

Batteries

EB1220BL EB1230HL

Screw used

Wood screw

Approx. 450 Approx. 675

ø4 × 50 (Soft wood)

Machine screw

Approx. 730 Approx. 2100

M8 × 16

Dial setting value Mode Operation

1~6 Several Impact

7~9 Timer

10 Continuous

After the start of operation, when the main unit starts the impact, it is

stopped automatically after a few impacts. The rotation rate at which the

switch trigger is pulled can be set from low speed to full speed with dial

settings of 1 (low) through 6 (full).

After the start of operation, when the main unit starts the impact, it is

stopped automatically after a certain period of time. The rotation rate when

the switch trigger is pulled is full speed and the higher the dial setting,

from 7 to 9, the longer time from the start of impact until it is stopped.

There is no automatic stopping. After operation starts, it continues until

the switch trigger is released.

Table 4

These values may vary slightly, according to

surrounding temperature and battery characteristics.

NOTE

The use of the battery 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.

OPERATIONAL CAUTIONS

1. Resting the unit after continuous work

After use for continuous bolt-tightening work, 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.

2. Cautions on use of the speed control switch

This switch has a built-in, electronic circuit which

steplessly varies the rotation speed. Consequently,

when the switch trigger is pulled only slightly (low

speed rotation) and the motor is stopped while

continuously driving in screws, the components of

the electronic circuit parts may overheat and be

damaged.

3. Tightening torque

Fig. 14-1, 14-2, and 14-3 show the tightening torque

for each screw and bolt size under the tightening

conditions of Fig. 15-1 and 15-2, so refer to these

figures.

Fig. 14-1 gives the reference values for tightening

torque for dial settings 1-9 when the impact automatic

stop function is used. Fig. 14-2 and 14-3 give the

reference values for tightening time and tightening

torque for manual tightening using switch operation

with the dial set to 10. These tightening torques are

for tightening with the screw or bolt placed on the

seating surface. In actual work, the torque varies with

the tightening conditions, so use the values in these

tables as general yardsticks.

NOTE

⅜ If a long striking time is used, screws will be strongly

tightened. This may cause the screw to break, or may

damage the tip of the bit.

⅜ If the unit is held at an angle to the screw being

tightened, the head of the screw may be damaged, or

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