Operational Cautions - Hitachi WH 14DSDL Handling Instructions Manual

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.
8. 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. 12)
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.

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 protector, 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 diff ers 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 confi rm 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 diff ers 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. Holding the tool
Hold the impact wrench fi rmly with both hands. In this case hold the wrench in line with the
bolt.
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English
Light switch
Fig. 12