InFocus FDV 16VB - Manual (Page 7)

5
English
⅜ When boring wood:
Use an ordinary woodworking drill bit. However,
when drilling 6.5mm or smaller holes, use a
metalworking drill bit.
7. Selecting the driver bit
Screw heads or bits will be damaged unless a bit
appropriate for the screw diameter is employed to
drive in the screws.
8. Confirm the direction of bit rotation (Fig.4)
(FDV16VB)
The bit rotates clockwise (viewed from the rear) by
pushing the R-side of the reverse switch.
The L-side of the switch is pushed to turn screws
counterclockwise (i.e. to loosen them.)
CAUTION
⅜ Never change the direction of bit rotation during
operation.
Turn the power switch OFF before changing the
direction of bit rotation; otherwise, the motor will
burn.
⅜ Always use with clockwise rotation, when using it
as an impact drill.
9. IMPACT to ROTATION changeover (Fig.5)
The impact drill can be switched from IMPACT
(impact plus rotation) to ROTATION (rotation only)
by simply sliding the change lever. When boring
concrete, stone, tile or similar board materials, slide
the change lever right. The drill head impacts against
the material while continuing to rotate.
When boring metal, wood or plastic, slide the change
lever fully to the left. The drill simply rotates as
an ordinary electric drill.
CAUTION
Do not use the impact drill in the IMPACT mode
if the material can be bored by rotation only. Such
action will not only reduce drill efficiency, but may
also damage the drill tip.
When changing over, ensure the change lever is
slid as far as it will go.
HOW TO USE
1. Pressure
Drilling will NOT be accelerated by placing heavy
pressure on the drill. Such action will only result
in a damaged drill bit, decreased drilling efficiency
and/or shortened service life of the drill.
2. Using a large diameter drill bit
The larger the drill bit diameter, the larger the
reactive force on your arm. Be careful not to lose
control of the drill because of this reactive force.
To maintain firm control, establish a good foothold,
hold the drill tightly with both hands, and ensure
that the drill is vertical to the material being drilled.
3. When drilling completely through the material
When the drill bit bores completely through the
material, careless handling often results in a bro-
ken, drill bit or damage to the drill body itself due
to the sudden movement of the drill. Always be
alert and ready to release pushing force when drilling
through the material.
4. Speed adjustment and switch operation
⅜ FDV16VB
The drill speed can be adjusted from 0 through
maximum speed by regulating the trigger squeez-
ing force.
The more the trigger is squeezed, the faster the drill
rotates. When the trigger is squeezed fully, the
speed becomes maximum speed. Turn the adjust-
ing knob clockwise for higher speed and counter-
clockwise for lower speed. (Rotate the adjusting
knob approximately 2-2/3 turns.) (Fig.6)
⅜ FDV16T
To change speed, slide the shift knob in the
appropriate direction, as indicated by the arrow in
Fig.7.
The mark “H” printed on the shift knob denotes
High speed. The mark “L” denotes Low speed.
When the shift knob is in High speed position, the
rotation speed of the drill bit can be changed in
two stages (High speed/Low speed) according to
the method of pressing the switch trigger.
⅜ FDV16
The maximum speed can be obtained by pulling
the trigger switch.
⅜ Pull the trigger switch and push the stopper, this
keeps the switched in the on position, which is
convenient for continuous running. The stopper can
be released by pulling the trigger again.
CAUTION
Drill at a maximum rotation speed when drilling
wooden materials.
5. When driving wood screws (FDV16VB)
(1) Selecting a suitable driver bit
Employ plus-head screws, if possible, since the
driver bit easily slips off the heads of minus-head
screws.
(2) Driving in wood screws
⅜ Prior to driving in wood screws, make holes suit-
able for them on the wooden board. Apply the bit
to the screw head grooves and gently drive the
screws into the holes.
⅜ After rotating the screwdriver at low speed for a
while until a wood screw is partly driven into the
wood, squeeze the trigger more strongly to obtain
optimum driving force.
CAUTION
⅜ Exercise care in preparing a hole suitable for the
wood screws taking the hardness of the wood into
consideration.
Should the hole be excessively small or shallow,
requiring much power to drive the screw into it,
the thread of the wood screw may sometimes be
damaged.
⅜ Do not drive machine screws.
MAINTENANCE AND INSPECTION
1. Inspection the drill bit
Continued use of a worn and/or damaged drill bit
will result in reduced drilling efficiency and may
seriously overload the drill motor. Inspect the drill
bit often and replace it with a new bit as necessary.
2. Inspecting the mounting screws:
Regularly inspect all mounting screws and ensure
that they are properly tightened. Should any of the
screws be loose, retighten them immediately. Fail-
ure to do so could result in serious hazard.