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7.
Tightening torque adjustment.
(1) Tightening torque
Tightening torque should correspond in its
intensity to the screw diameter. When too strong
power 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. 9)
The tightening torque differs 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 dot.
The tightening torque at position "1" is the weakest
and the torque is strongest at the highest number.
Use
Machine
screw
Screw
tightening
Wood screw
Wood
Drilling
Metal
CAUTION
●
The selection examples shown in Table 6 should
be considered as general standard. As different
types of tightening screws and different 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.
Triangle mark
Fig. 10
Clutch Position
For 5/32 in. (4 mm) or smaller
1 – 22
diameter screws.
For 5/16 in. (8 mm) or smaller
1 –
nominal diameter screws.
For 1-1/2 in. (38 mm) or
smaller diameters.
For drilling with a metal
working drill bit.
(3) Adjusting the tightening torque (See Fig. 9)
Rotate the clutch dial and line up the numbers "1,
3, 5, ... 22" on the clutch dial, or the dot, 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.
8.
Switch operation
When the trigger switch is depressed, the tool
rotates. When the trigger is released, the tool stops.
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.
NOTE
A buzzing noise is produced when the motor is
about to rotate. This is only a noise, not a machine
failure.
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.
9.
How to select tightening torque and rotational
speed
Table 6
Rotating speed selection (Position of the shift knob)
LOW (Low speed)
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.
When using the unit as a drill, prolonged operation
of 5 minutes or more will result in internal heat
which may cause a repeated noise other than the
sound normally emitted by the motor. This does
not indicate a malfunction.
English
HIGH (High speed)
For 1/4 in. (6 mm) or smaller
diameter screws.
For 3/16 in. (4.8 mm) or smaller
nominal diameter screws.
For 7/8 in. (22 mm) or
smaller diameters.
––––––
17
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