Causes And Operator Prevention Of Kickback - DeWalt D23620 Traducido De Las Instrucciones Originales

FURTHER SAFETY INSTRUCTIONS
FOR ALL SAWS
Causes and Operator Prevention of
Kickback
- kickback is a sudden reaction to a pinched,
bound or misaligned saw blade, causing an
uncontrolled saw to lift up and out of the
workpiece toward the operator;
- when the blade is pinched or bound tightly
by the kerf closing down, the blade stalls and
the motor reaction drives the unit rapidly back
toward the operator;
- if the blade becomes twisted or misaligned
in the cut, the teeth at the back edge ofthe
blade can dig into the top surface of the wood
causing the blade to climb out of the kerf and
jump back toward 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) Maintain a firm grip with both hands on
the saw and position your arms to resist
kickback forces. Position your body to
either side of the blade, but not in line with
the blade. Kickback could cause the saw
to jump backwards, but kickback forces
can be controlled by the operator, if proper
precautions are taken.
b) When blade is binding, or when
interrupting a cut for any reason, release
the trigger and hold the saw motionless
in the material until the blade comes to a
complete stop. Never attempt to remove the
saw from the work or pull the saw backward
while the blade is in motion or kickback may
occur. Investigate and take corrective actions
to eliminate the cause of blade binding.
c) When restarting a saw in the workpiece,
centre the saw blade in the kerf and
check that saw teeth are not engaged into
the material. If saw blade is binding, it may
walk up or kickback from the workpiece as
the saw is restarted.
d) Support large panels to minimise the risk
of blade pinching and kickback. Large
panels tend to sag under their own weight.
Supports must be placed under the panel on
both sides, near the line of cut and near the
edge of the panel.
e) Do not use dull or damaged blades.
Unsharpened or improperly set blades
produce narrow kerf causing excessive
friction, blade binding and kickback.
f) Blade depth and bevel adjusting locking
levers must be tight and secure before
making cut. If blade adjustment shifts while
cutting, it may cause binding and kickback.
g) Use extra caution when making a "plunge
cut" into existing walls or other blind
areas. The protruding blade may cut objects
that can cause kickback.
Safety instructions for Saws with a
Pendulum Blade Guard
a) Check lower guard for proper closing
before each use. Do not operate the saw if
lower guard does not move freely and close
instantly. Never clamp or tie the lower guard
into the open position. If saw is accidentally
dropped, lower guard may be bent. Raise
the lower guard with the retracting handle
and make sure it moves freely and does
not touch the blade or any other part, in all
angles and depths of cut.
b) Check the operation of the lower guard
spring. If the guard and the spring are not
operating properly, they must be serviced
before use. Lower guard may operate
sluggishly due to damaged parts, gummy
deposits, or a build-up of debris.
c) Lower guard should be retracted manually
only for special cuts such as "plunge
cuts" and "compound cuts". Raise lower
guard by retracting handle and as soon as
blade enters the material, the lower guard
must be released. For all other sawing, the
lower guard should operate automatically.
d) Always observe that the lower guard is
covering the blade before placing saw
down on bench or floor. An unprotected,
coasting blade will cause the saw to walk
backwards, cutting whatever is in its path.
Be aware of the time it takes for the blade to
stop after switch is released.
Additional Safety Instructions for All
Saws with Riving Knife
a) Use the appropriate riving knife for the
blade being used. For the riving knife to
work, it must be thicker than the body of the
blade but thinner than the tooth set of the
blade.
b) Adjust the riving knife as described in
this instruction manual. Incorrect spacing,
positioning and alignment can make the riving
knife ineffective in preventing kickback.
c) Always use the riving knife except when
plunge cutting. Riving knife must be
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