Safety Instructions For Plunge-Type Saws; Residual Risks - DeWalt DWS520 Manual

EN GLI SH
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
plunge-type saws
a) Check guard for proper closing before
each use. Do not operate the saw if guard
does not move freely and enclose the
blade instantly. Never clamp or tie the
guard with the blade exposed. If saw is
accidentally dropped, guard may be bent.
Check to make sure that guard moves freely
and does not touch the blade or any other
part, in all angles and depths of cut.
b) Check the operation and condition of the
guard return spring. If the guard and the
spring are not operating properly, they
must be serviced before use. Guard may
operate sluggishly due to damaged parts,
gummy deposits, or a build-up of debris.
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c) Assure that the guide plate of the saw will
not shift while performing the "plunge cut"
when the blade bevel setting is not at 90°.
Blade shifting sideways will cause binding
and likely kickback.
d) Always observe that the 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) For the riving knife to work, it must be
engaged in the workpiece. The riving knife
is ineffective in preventing kickback during
short cuts.
d) Do not operate the saw if riving knife is
bent. Even a light interference can slow the
closing rate of a guard.
Additional safety instructions for
plunge-type saws
• Wear ear protectors. Exposure to noise can
cause hearing loss.
• Wear a dust mask. Exposure to dust
particles can cause breathing difficulty and
possible injury.
• Do not use blades of larger or smaller
diameter than recommended. For the
proper blade rating refer to the technical
data. Use only the blades specified in this
manual, complying with EN 847-1.
• Never use abrasive cut-off wheels.

Residual risks

• In spite of the application of the relevant
safety regulations and the implementation of
safety devices, certain residual risks cannot be
avoided.
These are:
– Impairment of hearing.