Operational Cautions - Hitachi Koki WH 18DFL Manual De Instrucciones

Driver
Hexagonal
bit
hole in the
anvil
(1) Pull the guide sleeve forward.
(2) Insert the bit into the hexagonal hole in the anvil.
(3) Release the guide sleeve and it returns to its
origianl position.
CAUTION:
If the guide sleeve does not return to its original
position, then the bit is not installed properly.
3. Removing the bit
Please do the opposite point on the method of
installing bit.
4. Confirm that the battery is mounted correctly.
5. 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. 14). (The
marks are engraved on the body.)
R
R
Push
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.
6. Switch operation
When the trigger switch is depressed, the tool
rotates. When the trigger is released, the tool stops.
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.
Movement
Guide sleeve
Fig. 13
Push
button
Push
Fig. 14
NOTE:
A buzzing noise is produced when the motor is about
to rotate; this is only a noise, not a machine failure.
7. 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
with the screw.

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.
and
L
CAUTION:
Do not touch the hammer case, as it gets very hot
during continuous work.
2. Cautions on use of the speed control switch
L
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. 15 for the tightening torque of bolts
(according to size), under the conditions shown in
Fig. 16. Please use this example as a general
reference, as tightening torque will vary according
to tightening conditions.
NOTE:
If a long striking time is used, screws will be
strongly tightened. This may cause the screw to
break, or may damage the end of the bit.
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.
English
15