Hitachi WH14DSAL [10/80] English
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Hitachi WH14DSAL [10/80] English

Hitachi WH14DSAL [10/80] English
English
9
䡬
Since the built-in micro computer takes about 3 seconds to confirm that the
battery being charged with UC18YGSL is taken out, wait for a minimum of 3
seconds before reinserting it to continue charging. If the battery is reinserted
within 3 seconds, the battery may not be properly charged.
PRIOR TO OPERATION
䡬
Setting up and checking the work environment
Check if the work environment is suitable by the above precautions.
HOW TO USE
1. Installing the bit
Always follow the following procedure to install driver bit. (Fig. 7)
(1) Pull the guide sleeve forward.
(2) Insert the bit into the hexagonal hole in the socket.
(3) Release the guide sleeve and it returns to its original position.
CAUTION:
If the guide sleeve does not return to its original position, then the bit is not
installed properly.
2. Removing the bit
Please do the opposite point on the method of installing bit.
3. Confirm that the battery is mounted correctly
4. 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. 8) (The
L
and
R
marks are provided on the body).
5. Switch operation
䡬
When the trigger switch is depressed, the tool rotates. When the trigger is
released, the tool stops.
䡬
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
䡬
A buzzing noise is produced when the motor is about to rotate. This is only
a noise, not a machine failure.
6. 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. 9)
CAUTION:
Do not look directly into the light. Such actions could result in eye injury.
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.
8. 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.
9. Using the hook
The hook is used to hang up the power tool to your waist belt while working.
CAUTION:
䡬
When using the hook, hang up the power tool firmly not to drop accidentally.
If the power tool is dropped, it may lead to an accident.
䡬
When carrying the power tool with hooked to your waist belt, do not fit any
bit to the tip of power tool. If the sharp bit such as drill is fitted to the power
tool when carrying it with hooked to your waist belt, you will be injured.
䡬
Install securely the hook. Unless the hook is securely installed, it may cause
an injury while using.
(1) Removing the hook.
Remove the screws fixing the hook with Philips screw driver. (Fig. 10)
(2) Replacing the hook and tightening the screws.
Install securely the hook in the groove of power tool and tighten the screws
to fix the hook firmly. (Fig. 11)
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. 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. 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.
4. 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 operation time. Use the correct operating time for the bolt.
5. Confirm the tightening torque
The following factors contribute to a reduction of the tightening torque. So
confirm the actual tightening torque needed by screwing up some bolts
before the job with a hand torque wrench. Factors affecting the tightening
torque are as follows.
(1) Voltage
When the discharge margin is reached, voltage decreases and tightening
torque is lowered.
(2) Operating time
The tightening torque increases when the operating time increases. But the
tightening torque does not increase above a certain value even if the tool is
driven for a long time.
(3) Diameter of bolt
The tightening torque differs with the diameter of the bolt. Generally a larger
diameter bolt requires larger tightening torque.
(4) Tightening conditions
The tightening torque differs according to the torque ratio; class, and length
of bolts even when bolts with the same size threads are used. The tightening
torque also differs according to the condition of the surface of workpiece
through which the bolts are to be tightened. When the bolt and nut turn
together, torque is greatly reduced.
01Eng_WH14DSAL_EE 3/9/09, 11:199

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