Operational Cautions - Hitachi WH 14DBAL2 Handling Instructions Manual

English
4. About Remaining Battery Indicator
When pressing the remaining battery indicator switch, the remaining battery
indicator lamp lights and the battery remaining power can be checked.
(Fig.10) When releasing your finger from the remaining battery indicator
switch, the remaining battery indicator lamp goes off. The table 4 shows the
state of remaining battery indicator lamp and the battery remaining power.
State of lamp Battery Remaining Power
The battery remaining power is enough.
The battery remaining power is a half.
The battery remaining power is nearly
empty.
Re-charge the battery soonest possible.
As the remaining battery indicator shows somewhat differently depending
on ambient temperature and battery characteristics, read it as a reference.
NOTE
Do not give a strong shock to the switch panel or break it.It may lead to a
trouble.
To save the battery power consumption, the remaining battery indicator
lamp lights while pressing the remaining battery indicator switch.
Rotation speed
Use
"Delicate work"
Tightening small diameter
screws (M6 or similar), etc.
7. Tightening and loosening screws (WH14DBAL2 / WH18DBAL2)
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.
13
Table 4
Examples of tightening mode selector function settings
Low 1
-1
900 min
"Light load work"
Affixing plasterboard (select according to the hardness of the
base material) etc.
5. How to use the LED light
Every time you press the light switch on the switch panel, the LED light
lights or goes off. (Fig. 11)
To prevent the battery power consumption, turn off the LED light
frequently.
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.
NOTE
To prevent the battery power consumption caused by forgetting to turn off
the LED light, the light goes off automatically in about 15 minutes.
6. Tightening mode selector function (Fig. 12)
CAUTION
Do not subject the switch panel to shock or damage.
Select high/low mode while the trigger switch is released. Failure to do so
could result in malfunction.
(1) High/Low selector switch
The rotation speed changes in 4 steps (900, 1500, 2200, 2800/2900 min
each time the high/low selector switch is pressed.
NOTE
The appropriate mode differs depending on the screw and the material
being screwed. Drive in a few test screws and adjust the mode setting
accordingly.
The high/low selector switch can only be set after the battery has been
installed in the driver and the trigger switch has been pulled once.
Low 2 Medium
-1
1500 min
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.

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.
High
2800 min
-1
2000 min
/2900 min
"Heavy load work"
Tightening long screws,
coach screws, bolts, etc.
-1
)
-1
-1