Hitachi DV 14DBL Mode D'emploi page 12

English
3. Rotation to Impact changeover (See Fig. 5)
The "Rotation (Rotation only)" and "Impact (Impact
+ Rotation)" can be switched by aligning the drill
mark " " or the hammer mark " " with the triangle
mark on the outer body.
To make holes in the metal, wood or plastic, switch
to "Rotation (Rotation only)".
To make holes in bricks or concrete blocks, switch to
"Impact (Impact + Rotation)".
CAUTION
If an operation which is normally performed at the
"Rotation" setting is performed at "Impact " setting,
the effect of making holes does not only increase but
it may also damage the bit or other parts.
4. Change rotation speed
Operate the shift knob to change the rotational speed.
Move the shift knob in the direction of the arrow (See
Figs. 7 and 8).
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.
Table 4
Rotation speed
selector switch
Shift knob
LOW
(Slow)
HIGH
(Fast)
6. 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 5.
Work
Brick
Wood
Drilling
Steel
Aluminum
Machine screw
Driving
Wood screw
11
Examples of tightening mode selector function settings
Low 1
Slow
Tightening small diameter machine
screws, tapping screws, etc.
Use for drilling purpose.
Use the bit or socket matching the screw diameter.
Use after drilling a pilot hole.
CAUTION:
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.
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.
Be sure to turn the shift knob.
5. Change rotation speed mode selector function (Fig.
11)
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) Change rotation speed selector switch
The rotation speed changes in 4 steps each time the
high/low selector switch is pressed.
Low 2 Medium
Tightening wood screws, drilling large
diameter holes, etc.
Drilling small diameter holes, etc.
Table 5
Suggestions
High
Fast