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9
(c) Align the indentation in the hook main body with
the protuberance of the hook cover, press the
hook cover in the direction opposite to that of the
arrow shown in Fig. 11 and then tighten the screw.
Use commercially available AAAA batteries
(1.5 V).
NOTE:
Do not tighten the screw excessively. Such action
could strip the screw threads.
CAUTION:
⅜ Failure to observe the following can result in battery
leakage, rust or malfunction.
Position the plus (+) and minus (–) terminals correctly.
Replace both batteries at the same time. Do not mix
old and new batteries.
Remove exhausted batteries from the hook
immediately.
⅜ Do not discard batteries together with normal trash
and do not throw batteries into fire.
⅜ Store batteries out of the reach of children.
⅜ Use batteries correctly in accordance with the battery
specifications and indications.
2. Check the rotational direction
The bit rotates clockwise (viewed from the rear side)
by pushing the R-side of the push button.
The L-side of the push button is pushed to turn the bit
counterclockwise. (See Fig. 13) (The
L
and
R
marks
are provided 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 screws
Install the bit that matches the screw, line up the bit
in the grooves of the head of the screw, then tighten
it.
Push the impact driver just enough to keep the bit
fitting the head of the screw.
CAUTION:
Applying the impact driver for too long tightens the
screw too much and can break it.
Tightening a screw with the impact driver at an angle
to that screw can damage the head of the screw and
the proper force will not be transmitted to the screw.
Tighten with this impact driver lined up straight wiÑ9
the screw.
5. Number of screws tightenings possible
Please refer to the table below for the number of
screw tightened possible with one charge.
EB1430H
These values may vary slightly, according to
surrounding temperature and battery characteristics.
NOTE:
The use of the battery EB1430H 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.
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
Refer to Fig. 18 the tightening torque of bolts
(according to size), under the conditions shown in
Fig. 19. Please use this example as a general reference,
as tightening torque will vary according to tightening
conditions.
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
the specified torque may not be transmitted to the
screw. Always keep the unit and the screw being
tightened in a straight line.
4. Use a tightening time suitable for the screw
The appropriate torque for a screw differs according
to the material and size of the screw, and the material
being screwed etc., so please use a tightening time
suitable for the screw. In particular, if a long tightening
time is used in the case of screws smaller than M8,
there is a danger of the screw breaking, so please
confirm the tightening time and the tightening torque
beforehand.
Screw used No. of tightenings
Wood screw ø4 × 50
Approx. 950
(Soft wood)
Machine screw M8 × 16 Approx. 1890