Hitachi DV 14DVA Instrucciones De Manejo página 10

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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
Table. 4.
Table 4
Work
Brick: 14 mm
Wood: 30 mm
Drilling
Steel: 13 mm
Aluminun: 13 mm
Machine screw: 6 mm
Driving Nut: 6 mm
Wood screw: 6.8 mm (diameter) × 63 mm (length)
6. How to select tightening power and rotational speed
Table 5
Use
Machine screw
Driving
Wood screw
Wood
Drilling
Wood
Metal
CAUTION
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.
7. Mounting and dismounting of the bit.
(1) Mounting the bit
After inserting a driver bit, etc. into the keyless drill
chuck, firmly grasp the ring and tighten the sleeve
by turning it toward the right (in the clockwise
direction as viewed from the front). (See Fig. 8)
If the sleeve becomes loose during operation, tighten
it further. The tightening force becomes stronger
when the sleeve is tightened moreover.
(2) Dismounting the bit
Firmly grasp the ring and loosen the sleeve by
turning it toward the left (in the counter-clockwise
direction as viewed from the front). (See Fig. 8)
CAUTION:
When it is no longer possible to loosen the sleeve,
use a vise or similar device to secure the bit. Set
the clutch mode between 1 and 3 and then turn
the sleeve to the loose side (left side ) while operating
the clutch. It should be easy now to loosen the
sleeve.
8. Confirm that the battery is mounted correctly.
8
Usable range
Cap Position
For 4 mm or smaller diameter
1 – 5
screws.
For 6.8 mm or smaller diameter
1 – 5
screws.
For 14 mm or smaller diameters.
For 30 mm or smaller diameters.
Drill dia. 13 mm min.
Use for drilling purposes.
Use the bit and socket matching the
screw diameter.
Use after drilling a pilot hole.
Low Speed
9. Check the rotational direction
The bit rotates clockwise (viewed from the rear
side) by pushing the R-side of the selector button.
The L-side of the selector button is pushed to turn
the bit counterclockwise. (See Fig. 9). (The
marks are engraved on the body.)
CAUTION:
Always use the impact drill with clockwise rotation,
when using it as an impact drill.
10. 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 is pulled.
Speed is low when the trigger switch is pulled
slightly and increases as the trigger switch is pulled
more.
When releasing the trigger of the switch, the brake
will be applied for immediate stopping.
11. For drilling into brick
Excessive pressing force never increases drilling
speed. It will not only damage the drill tip or reduce
working efficiency, but could also shorten the service
life of drill bit. Operate the impact drill within 10-
15 kg pressing force while drilling into brick.
NOTE
The use of the battery EB14H 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.
Suggestions
High Speed
For 6 mm or smaller
diameter screws.
For 4.8 mm or smaller
diameter screws.
For 10 mm or smaller
diameters.
For 18 mm or larger
diameters.
Drill dia. 6.5 mm max.
and