Hitachi DV 18DL - Manual (Page 12)

English
11
CAUTION
⅜ The selection examples shown in Table 5 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.
⅜ When using the impact 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 impact driver drill at LOW (low speed)
when using a machine screw.
NOTE
The use of the battery BCL1430, EBL1430, EBM1430
and EBM1830 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.
Work Suggestions
Brick
Drilling
Wood
Use for drilling purpose.
Steel
Aluminum
Machine screw Use the bit or socket matching the screw diameter.
Driving
Wood screw Use after drilling a pilot hole.
Table 4
⅜ How to switch over the Power mode (P) or Save
mode (S)
To set to the Power mode (P), slide the lever on the
side of handle to the lower side, and to set to the Save
mode (S), slide the lever to the upper side. (Fig. 8)
CAUTION
⅜ 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.
⅜ When setting the shift knob to “HIGH” (high speed)
and the position of the cap is bitween “16” 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).
⅜ 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.
⅜ In the work of the save mode (S), avoid the continuous
screw-tightening as temperature of electronic
components of the converter switch increases.
⅜ 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.
6. How to select tightening torque and rotational speed
Table 5
Use Cap Position
Rotating speed selection (Position of the shift knob)
LOW (Low speed) HIGH (High speed)
Machine screw 1 – 22
For 4 mm or smaller
diameter screws.
Driving
Wood screw 1 –
For 8 mm or smaller nominal
diameter screws.
Brick
For 14 mm or smaller
diameters. (DV14DL)
For 16 mm or smaller
diameters. (DV18DL)
Drilling
Wood
For 45 mm or smaller
diameters. (DV14DL)
For 50 mm or smaller
diameters. (DV18DL)
Metal
For drilling with a metal
working drill bit.
For 6 mm or smaller
diameter screws.
For 4.8 mm or smaller
nominal diameter screws.
For 10 mm or smaller
diameters. (DV14DL)
For 12 mm or smaller
diameters. (DV18DL)
For 20 mm or smaller
diameters. (DV14DL)
For 22 mm or smaller
diameters. (DV18DL)