Hitachi DS14DSFL Handling Instructions Manual page 10

English
(2) Tightening torque indication
The tightening torque diff ers depending on the type of
screw and the material being tightened.
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. 5).
(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.
CAUTION
○ 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. 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
Work
Wood
Drilling
Steel
Machine screw
Driving
Wood screw
5. How to select tightening torque and rotational speed
Table 5
Use
Machine screw
Driving
Wood screw
Wood
Drilling
Metal
CAUTION
○ The selection examples shown in Table 5 should be
considered as general standard. As diff erent types of
tightening screws and diff erent materials to be tightened
are used in actual works proper adjustments are naturally
necessary.
○ When using the driver drill with a machine screw at HIGH
(high speed), a screw may damage or a bit may loose
due to the tightning torque is too strong. Use the driver
drill at LOW (low speed) when using a machine screw.
10
Use for drilling purpose.
Use the bit or socket matching the screw diameter.
Use after drilling a pilot hole.
Clutch Dial
Position
LOW (Low speed)
For 6 mm or smaller diameter
1 – 22
screws.
For 6 mm or smaller nominal
diameter screws. (DS18DSFL)
1 –
For 6 mm or smaller nominal
diameter screws. (DS14DSFL)
For 38 mm or smaller diameters.
(DS18DSFL)
For 30 mm or smaller diameters.
(DS14DSFL)
For drilling with a metal working drill bit.
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 "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.
○ 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.
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.
Suggestions
Rotating speed selection (Position of the shift knob)
NOTE
The use of the battery BSL1415, BSL1815 and BSL1830
in a cold condition (below 0 degree Centigrade) can
sometimes result in the weakened tightening torque and
reduced amount of work. This, however, is a temporary
phenomenon, and returns to normal when the battery
warms up.
HIGH (High speed)
For 6 mm or smaller diameter
screws.
For 4.8 mm or smaller nominal
diameter screws. (DS18DSFL)
For 3.8 mm or smaller nominal
diameter screws. (DS14DSFL)
For 24 mm or smaller diameters.
(DS18DSFL)
For 12 mm or smaller diameters.
(DS14DSFL)