Operational Cautions; Maintenance And Inspection - Hitachi DV 14DBEL Handling Instructions Manual

English
CAUTION
○ When using the hook, hang up the power tool fi rmly not to
drop accidentally.
If the power tool is dropped, it may lead to an accident.
○ When carrying the power tool with hooked to your waist
belt, do not fi t any bit to the tip of power tool. If the sharp
bit such as drill is fi tted to the power tool when carrying it
with hooked to your waist belt, you will be injured.
○ Install securely the hook. Unless the hook is securely
installed, it may cause an injury while using.
(1) Removing the hook.
Remove the screws fi xing the hook with Phillips screw
driver.(Fig. 9)
(2) Replacing the hook and tightening the screws.
Install securely the hook in the groove of power tool and
tighten the screws to fi x the hook fi rmly. (Fig. 10)
8. Using the light
Pull the trigger switch to light up the light. The light keeps
on lighting while the trigger switch is being pulled. The
light goes out after releasing the trigger switch. (Fig. 11)
(The light automatically goes out 10 seconds after
releasing the trigger switch.)
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.
9. Mounting and dismounting of the bit
(1) Mounting the bit
Loosen the sleeve by turning it toward the left (in the
counterclockwise direction as viewed from the front)
to open the clip on the keyless chuck. After inserting a
driver bit, etc., into the keyless drill chuck, and tighten
the sleeve by turning it toward the right (in the clockwise
direction as viewed from the front). (See Fig. 12)
○ If the sleeve becomes loose during operation, tighten it
further.
The tightening force becomes stronger when the sleeve
is tightened additionally.
(2) Dismounting the bit
Loosen the sleeve by turning it toward the left (in the
counterclockwise direction as viewed from the front), and
then take out the bit etc. (See Fig. 12)
NOTE
If the sleeve is tightened in a state where the clip of the
keyless chuck is opened to a maximum limit, a click
noise may occur. This is the noise that occurs when the
loosening of the keyless chuck is prevented and is not a
malfunction.
CAUTION
When it is no longer possible to loosen the sleeve, use a
vise or similar instrument to secure the bit. Set the clutch
mode between 1 and 7 and then turn the sleeve to the
loose side (left side) while operating the clutch. It should
be easy now to loosen the sleeve.
10. Automatic spindle-lock mechanism
This unit has automatic spindle-lock mechanism for quick
bit changes.
11. Confi rm that the battery is mounted correctly
12. Check the rotational direction
The bit rotates clockwise (viewed from the rear side) by
pushing the R-side of the selector button.
The L-side of the selector button is pushed to turn the bit
counterclockwise. (See Fig. 13) (The
are provided on the body.)
CAUTION
Always use this unit with clockwise rotation, when using it
as an impact drill.
16
13. Switch operation
○ When the trigger switch is depressed, the tool rotates.
When the trigger is released, the tool stops.
○ The rotational speed of the drill 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.
NOTE
A buzzing noise is produced when the motor is about to
rotate; This is only a noise, not a machine failure.
14. For drilling into brick
Excessive pressing force never increases drilling speed.
It will not only damage the drill tip or reduce working
effi ciency, but could also shorten the service life of
drill bit. Operate the impact driver drill within 10-15 kg
pressing force while drilling into brick.

OPERATIONAL CAUTIONS

○ Resting the unit after continuous work
(1) The power tool is equipped with a temperature protection
circuit to protect the motor.
Continuous
temperature of the unit to rise, activating the temperature
protection circuit and automatically stopping operation.
If this happens, allow the power tool to cool before
resuming use.
(2) After use for continuous tightening wood screw works,
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.

MAINTENANCE AND INSPECTION

1. Inspecting the tool
Since use of a dull tool will degrade effi ciency and cause
possible motor malfunction, sharpen or replace the tool
as soon as abrasion is noted.
2. Inspecting the mounting screws
Regularly inspect all mounting screws and ensure that
they are properly tightened. Should any of the screws be
loose, retighten them immediately. Failure to do so could
result in serious hazard.
3. Maintenance of the motor
The motor unit winding is the very "heart" of the power
tool.
Exercise due care to ensure the winding does not
become damaged and/or wet with oil or water.
4. Cleaning on the outside
When the impact driver drill is stained, wipe with a soft
dry cloth or a cloth moistened with soapy water. Do not
use chloric solvents, gasoline or paint thinner, for they
melt plastics.
5. Storage
Store the impact driver drill in a place in which the
temperature is less than 40°C and out of reach of
children.
NOTE
Make sure that the battery is fully charged when stored
for a long period (3 months or more). The battery with
smaller capacity may not be able to be charged when
used, if stored for a long period.
and marks
NOTE
Storing Lithium-ion Batteries
Make sure the lithium-ion batteries have been fully
charged before storing them.
bolt-tightening work may cause the