Hitachi DV 18 DMR [11/74] English
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Hitachi DV 18 DMR [11/74] English

Hitachi DV 18 DMR [11/74] English
English
10
CAUTION
䡬 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.
䡬 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 EB1426H, EB1430H, EB1826HL
and EB1830HL 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.
7. Mounting and dismounting of the bit
(1) Mounting the bit
Loosen the sleeve by turning it toward the left (in the
counterclockwise direction as viewed from the front)
to open the clip on the keyless chuck. After inserting
a driver bit, etc., into the keyless drill chuck, and
tighten the sleeve by turning it toward the right (in
the clockwise direction as viewed from the front)
(See Fig. 8).
䡬 If the sleeve becomes loose during operation, tighten
it further.
The tightening force becomes stronger when the
sleeve is tightened additionally.
(2) Dismounting the bit
Loosen the sleeve by turning it toward the left (in the
counterclockwise direction as viewed from the front),
and then take out the bit, etc. (See Fig. 8).
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
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
䡬 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.
䡬 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).
䡬 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.
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 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. (DV14DMR)
For 16 mm or smaller
diameters. (DV18DMR)
Drilling
Wood
For 45 mm or smaller
diameters. (DV14DMR)
For 50 mm or smaller
diameters. (DV18DMR)
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. (DV14DMR)
For 12 mm or smaller
diameters. (DV18DMR)
For 20 mm or smaller
diameters. (DV14DMR)
For 22 mm or smaller
diameters. (DV18DMR)
6. How to select tightening torque and rotational speed

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