Manual Hitachi WR9DM1 (page 12 of 98) (English, German, Dutch, French, Italian, Portuguese, Spanish)

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English

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

bit counterclockwise. (See Fig. 11). (The

and

marks are engraved on the body.)

CAUTION

The push button can not be switched while the

impact driver is turning. To switch the push button,

stop the impact driver, then set the push button.

3. Switch operation

⅜ When the trigger switch is depressed, the tool

rotates. When the trigger is released, the tool stops.

⅜ The rotational speed 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.

4. 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 wit 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.

5. Number of bolt tightened possible

Please refer to the table below for the number of

bolt tightened possible with one charge.

For WR12DM (EB1230HL)

For WR9DM (EB930H)

These values may vary slightly, according to

surrounding temperature and battery characteristics.

NOTE

The use of the battery EB1230HL and EB930H 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.

NOTE:

Do not touch the hammer case, as it gets very hot

during continuous work.

Bolt used No. of tightenings

M16 × 55 (F10T) Approx. 135

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.

Finally, install the socket prescribed in Item 4. The

section on “Optional Accessories” details the

relationship between bolt sizes and sockets. Sockets

are named according to the dihedral width of the

hexagonal hole.

4. Installing a socket

Select the socket to be used.

ⅷ Pin, O-ring type (Fig. 4 and 5)

(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 (Fig. 6)

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.

HOW TO USE

1. Using the convenient hook

The convenient 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. 7)

(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. 8)

(b) Remove the hook and spring. (Fig. 9)

securely fasten with screw. (Fig. 8)

NOTE:

Pay attention to the spring orientation. Install the

spring with larger diameter away from you. (Fig.

10)

2. Check the rotational direction

The bit rotates clockwise (viewed from the rear

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

Bolt used No. of tightenings

High tension bolt

Approx. 135

M12 × 45

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Hitachi WR9DM1 Manual

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