English
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8. 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 (See Fig. 10 on page 36, Fig. 12 on page 37)
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, 4, 7 ... 22” on the clutch dial,
and a dots. The tightening torque at position “1” is the weakest and the torque is strongest
at the highest number.
(3) Adjusting the tightening torque (See Fig. 10 on page 36, Fig. 12 on page 37)
Rotate the clutch dial and line up the numbers “1, 4, 7 ... 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.
9. Switch operation
○
When the trigger switch is depressed, the tool rotates. When the trigger is released, the tool
stops.
○
When releasing the trigger of the switch, the brake will be applied for immediate stopping.
○
The rotational speed of the drill can be controlled by varying the amount that the trigger
switch is pulled. Speed is low when the trigger switch is pulled slightly and increases as the
trigger switch is pulled more.
10. For drilling into brick (DV18DBSL)
Excessive pressing force never increases drilling speed. It will not only damage the drill tip
or reduce working effi ciency, but could also shorten the service life of drill bit. Operate the
impact driver drill within 10 – 20 kg pressing force while drilling into brick.
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.
○
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.
○
Too long hammering may cause the screw broken due to excessive tightening.
11. How to select tightening torque and rotational speed
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.
NOTE
The use of the battery 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.
000BookDS14DBSLChS.indb38000BookDS14DBSLChS.indb38 2017/12/088:45:052017/12/088:45:05
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