Hitachi Koki DS 12DM Mode D'emploi page 10

English
Since the built-in micro computer takes about 3
seconds to confirm that the battery being charged
with UC14YFA 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
1. Setting up and checking the work environment
Check if the work environment is suitable by
following the precautions.
HOW TO USE
1. Confirm the clutch dial position (see Fig. 5)
The tightening torque of this unit can be adjusted
according to the clutch dial position, at which the
clutch dial is set.
(1) When using this unit as a screwdriver, line up the
one of the numbers "1, 3, 5 ... 22" on the clutch
dial, or the dots, with the triangle mark on the outer
body.
(2) When using this unit as a drill, align the clutch dial
drill mark " " with the triangle mark on the outer
body.
CAUTIONS:
The clutch dial cannot be set between the numerals
"1, 3, 5 ... 22" or the dots.
Do not use with the clutch dial numeral between
"22" and the line at the middle of the drill mark.
Doing so may cause damage. (See Fig. 6)
2. Tightening torque adjustment
(1) Tightening torque
Tightening torque should correspond in its intensity
to the screw diameter. When too strong torque is
used, the screw head may be broken or be injured.
Be sure to adjust the clutch dial position according
to the screw diameter.
(2) Tightening torque indication
The tightening torque differs depending on the type
of screw and the material being tightened.
Work
Wood
Drilling Steel
Aluminum
Machine screw
Driving
Wood screw
9
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Use for drilling purpose.
Use the bit or socket matching the screw diameter.
Use after drilling a pilot hole.
The unit indicates the tightening torque with the
numbers "1, 3, 5 ... 22" on the clutch dial, and a
dots. The tightening toque at position "1" is the
weakest and the torque is strongest at the highest
number. (See Fig. 6)
(3) Adjusting the tightening torque
Rotate the clutch dial and line up the numbers "1,
3, 5, ... 22" on the clutch dial, or the dots, with
the triangle mark on the outer body. Adjust the
clutch dial in the weak or the strong torque direction
according to the torque you need.
CAUTIONS:
The motor rotation may be locked to cease while
the unit is used as drill. While operating the driver
drill, take care not to lock the motor.
Too long hammering may cause the screw broken
due to excessive tightening.
3. Change rotation speed
Operate the shift knob to change the rotational
speed. Move the shift knob in the direction of the
arrow (see Figs. 6 and 7).
When the shift knob is set to "LOW", the drill
rotates at a low speed. When set to "HIGH", the
drill rotates at a high speed.
CAUTIONS:
When changing the rotational speed with the shift
knob, confirm that the switch is off.
Changing the speed while the motor is rotating will
damage the gears.
When setting the shift knob to "HIGH" (high speed)
and the position of the clutch dial is "17" or "22",
it may happen that the clutch does not engaged
and that the motor is locked. In such a case, please
set the shift knob to "LOW" (low speed).
If the motor is locked, immediately turn the power
off. If the motor is locked for a while, the motor
or battery may be burnt.
4. The scope and suggestions for uses
The usable scope for various types of work based
on the mechanical structure of this unit is shown
in Table 4.
Table 4
Suggestions