Hitachi Koki DV14DCL2 Handling Instructions Manual page 12

English
CAUTION
○ The motor rotation may be locked to cease while the unit
is used as drill. While operating the impact driver drill,
take care not to lock the motor.
○ Too long hammering may cause the screw broken due to
excessive tightening.
3. Rotation to Impact changeover (See Fig. 4)
The "Rotation (Rotation only)" and "Impact (Impact +
Rotation)" can be switched by aligning the drill mark "
or the hammer mark "
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
eff ect of making holes does not only increase but it may
also damage the bit or other parts.
○ If it is hard to turn the clutch dial to hammer mark
" " position, turn the chuck slightly in either direction
and then turn the clutch dial to hammer mark "
again.
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. 6 and 7).
Work
Brick
Wood
Drilling
Steel
Aluminum
Machine screw
Driving
Wood screw
6. How to select tightening torque and rotational speed
Use
Machine screw
Driving
Wood screw
Brick
Drilling
Wood
Metal
12
" with the triangle mark on the
" position
Use for drilling purpose.
Use the bit or socket matching the screw diameter.
Use after drilling a pilot hole.
Clutch Dial
Position
For 4 mm or smaller diameter
1 – 22
screws.
For 8 mm or smaller nominal
1 –
diameter screws.
For 13 mm or smaller diameters.
For 32 mm or smaller diameters.
(DV14DCL2)
For 38 mm or smaller diameters.
(DV18DCL2)
For drilling with a metal working drill
bit.
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.
CAUTION
○ When changing the rotational speed with the shift knob,
confi rm 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 between "15" and "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.
○ To extend the lifetime, the lithium-ion battery equips with
the protection function to stop the output.Therefore, if the
tool is overloaded, the motor may stop. However, this is
not the trouble but the result of protection function. In this
case, release the switch of tool and eliminate the causes
of overloading.
5. 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
Table 5
Rotating speed selection (Position of the shift knob)
LOW (Low speed) HIGH (High speed)
For 6 mm or smaller diameter
screws.
For 4.8 mm or smaller nominal
diameter screws.
For 8 mm or smaller diameters.
(DV14DCL2)
For 10 mm or smaller diameters.
(DV18DCL2)
For 18 mm or smaller diameters.
(DV14DCL2)
For 22 mm or smaller diameters.
(DV18DCL2)