Bedienungsanleitung Hitachi WR18DHL (Seite 10 von 64) (Deutsch, Englisch, Holländisch, Französisch, Italienisch, Portugiesisch, Spanisch)

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(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 When the battery charger has been continuosly used,

the battery charger will be heated, thus constituting

the cause of the failures. Once the charging has been

completed, give 15 minutes rest until the next

charging.

⅜ If the battery is recharged when it is warm due to

battery use or exposure to sunlight, the pilot lamp

map light in green.

The battery will not be recharged. In such a case, let

the battery cool before 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.

PRIOR TO OPERATION

1. Preparing and checking the work environment

Make sure that the work site meets all the conditions

laid forth in the precautions.

2. Checking the battery

Make sure that the battery is installed firmly. If it is at

all loose it could come off and cause an accident.

3. Selecting the socket matched to the bolt

Be sure to use a socket which is matched to the bolt

to be tightened. Using an improper socket will not

only result in insufficient tightening but also in

damage to the socket or nut.

A worn or deformed hex. or square-holed socket will

not give an adequate tightness for fitting to the nut or

anvil, consequently resulting in loss of tightening

torque.

Pay attention to wear of socket hole, and replace

before further wear has developed.

4. Installing a socket

Select the socket to be used.

ⅷ Pin, O-ring type

(1) Align the hole in the socket with the hole in the anvil

and insert the anvil into the socket.

(2) Insert the pin into the socket.

(3) Attach the ring to the groove on the socket.

ⅷ Plunger type

Align the plunger located in the square part of the

anvil with the hole in the hex. socket. Then push the

plunger, and mount the hex. socket on the anvil.

Check that the plunger is fully engaged in the hole.

When removing the socket, reverse the sequence.

ⅷ Retaining ring type

(1) Align the square portions of the socket and the anvil

with each other.

(2) Make sure to firmly install the socket by pushing it all

the way into the anvil.

(3) When removing the socket, pull it out of the anvil.

CAUTION:

⅜ Please use the designated attachments which are

listed in the operations manual and Hitachi’s catalog.

Accidents or injuries could result from not doing so.

⅜ Make sure to firmly install the socket in the anvil. If

the socket is not firmly installed it might come out

and cause injuries.

HOW TO USE

1. Operation of switch

The switch in this machine functions as a motor

switch and rotational direction selector switch. When

the switch is set to

indicated on the handle, the

motor rotates clockwise to tighten the bolt. When the

switch is set to

, the motor rotates counterclockwise

to loosen the bolt. When the switch is released, the

motor stops. (Fig. 5)

CAUTION:

Be sure to turn the switch OFF and wait until the

motor completely stops before changing the direction

of wrench revolution. Switching while the motor is

rotating will result in burning the motor.

2. How to use the LED light

Push the upper position of the light switch for turning

on the light and the lower position for off. (Fig. 6)

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.

3. Tightening and loosening bolts

A hex. socket matching the bolt or nut must first be

selected. Then mount the socket on the anvil, and

grip the nut to be tightened with the hex. socket.

Holding the wrench in line with the bolt, press the

power switch to impact the nut for several seconds.

If the nut is only loosely fitted to the bolt, the bolt

may turn with the nut, therefore mistaking proper

tightening. In this case, stop impact on the nut and

hold the bolt head with a wrench before restarting

impact, or manually tighten the bolt and nut to prevent

them slipping.

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.

NOTE:

Do not touch the metal parts, as it gets very hot

during continuous work.

2. Work at a tightening torque suitable for the bolt

under impact

The optimum tightening torque for nuts or bolts differs

with material and size of the nuts or bolts. An

excessively large tightening torque for a small bolt

may stretch or break the bolt. The tightening torque

increases in proportion to the operaton time. Use the

correct operating time for the bolt.

3. Holding the tool

Hold the impact wrench firmly with both hands. In

this case hold the wrench in line with the bolt.

It is not necessary to push the wrench very hard.

Hold the wrench with a force just sufficient to

counteract the impact force.

01Eng_WR18DHL_WE 12/14/10, 8:5810

Hitachi WR18DHL Seite 10

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