Black+Decker BES720 Manual Del Usuario página 7

f. For the riving knife to work, they must be engaged in
the workpiece. The riving knife is ineffective when cutting
workpieces that are too short to be engaged with the riving
knife. Under these conditions a kickback cannot be
prevented by the riving knife.
g. Use the appropriate saw blade for the riving knife. For
the riving knife to function properly, the saw blade
diameter must match the appropriate riving knife and the
body of the saw blade must be thinner than the thickness
of the riving knife and the cutting width of the saw blade
must be wider than the thickness of the riving knife.
2. Cutting procedures warnings
a. DANGER: Never place your fingers or hands in the
vicinity or in line with the saw blade. A moment of
inattention or a slip could direct your hand towards the
saw blade and result in serious personal injury.
b. Feed the workpiece into the saw blade only against
the direction of rotation. Feeding the workpiece in the
same direction that the saw blade is rotating above the
table may result in the workpiece, and your hand, being
pulled into the saw blade.
c. Never use the mitre gauge to feed the workpiece when
ripping and do not use the rip fence as a length stop
when cross cutting with the mitre gauge. Guiding the
workpiece with the rip fence and the mitre gauge at the
same time increases the likelihood of saw blade binding
and kickback.
d. When ripping, always apply the workpiece feeding
force between the fence and the saw blade. Use a
push stick when the distance between the fence and
the saw blade is less than 150 mm, and use a push
block when this distance is less than 50 mm. "Work
helping" devices will keep your hand at a safe distance
from the saw blade.
e. Use only the push stick provided by the manufacturer
or constructed in accordance with the instructions.
This push stick provides sufficient distance of the hand
from the saw blade.
f. Never use a damaged or cut push stick. A damaged
push stick may break causing your hand to slip into the
saw blade.
g. Do not perform any operation "freehand". Always use
either the rip fence or the mitre gauge to position and
guide the workpiece. "Freehand" means using your
hands to support or guide the workpiece, in lieu of a rip
fence or mitre gauge. Freehand sawing leads to
misalignment, binding and kickback.
h. Never reach around or over a rotating saw blade.
Reaching for a workpiece may lead to accidental contact
with the moving saw blade.
(Original instructions)
i. Provide auxiliary workpiece support to the rear and/or
sides of the saw table for long and/or wide workpieces
to keep them level. A long and/or wide workpiece has a
tendency to pivot on the table's edge, causing loss of
control, saw blade binding and kickback.
j. Feed workpiece at an even pace. Do not bend or twist
the workpiece. If jamming occurs, turn the tool off
immediately, unplug the tool then clear the jam.
Jamming the saw blade by the workpiece can cause
kickback or stall the motor.
k. Do not remove pieces of cut-off material while the saw
is running. The material may become trapped between
the fence or inside the saw blade guard and the saw blade
pulling your fingers into the saw blade. Tum the saw off
and wait until the saw blade stops before removing
material.
l. Use an auxiliary fence in contact with the table top
when ripping workpieces less than 2 mm thick. A thin
workpiece may wedge under the rip fence and create a
kickback.
3. Kickback causes and related warnings
Kickback is a sudden reaction of the workpiece due to a
pinched, jammed saw blade or misaligned line of cut in the
workpiece with respect to the saw blade or when a part of the
workpiece binds between the saw blade and the rip fence or
other fixed object.
Most frequently during kickback, the workpiece is lifted from
the table by the rear portion of the saw blade and is propelled
towards the operator.
Kickback is the result of saw misuse and/or incorrect operating
procedures or conditions and can be avoided by taking proper
precautions as given below.
a. Never stand directly in line with the saw blade. Always
position your body on the same side of the saw blade
as the fence. Kickback may propel the workpiece at high
velocity towards anyone standing in front and in line with
the saw blade.
b. Never reach over or in back of the saw blade to pull or
to support the workpiece. Accidental contact with the
saw blade may occur or kickback may drag your fingers
into the saw blade.
c. Never hold and press the workpiece that is being cut
off against the rotating saw blade. Pressing the
workpiece being cut off against the saw blade will create a
binding condition and kickback.
d. Align the fence to be parallel with the saw blade. A
misaligned fence will pinch the workpiece against the saw
blade and create kickback.
e. Use extra caution when making a cut into blind areas
of assembled workpieces. The protruding saw blade
may cut objects that can cause kickback.
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