Kickback - Causes And Corresponding Safety Instructions - Parkside PMTS 210 A1 Originalbetriebsanleitung

b) Always use the saw blade protective cover
and the riving knife for separating cuts.
For through-cutting operations where the saw blade cuts
completely through the thickness of the workpiece, the
guard and other safety devices help reduce the risk of injury.
c) After completing working procedures where
the removal of the protective cover and/or
riving knife is necessary (e.g. producing folds
and rebating, cutting grooves or cutting with
a turnover), the protective system must be im-
mediately reattached.
The guard helps to reduce the risk of injury.
d) Make sure the saw blade is not contacting the
guard, riving knife or the workpiece before
the switch is turned on.
Inadvertent contact of these items with the saw blade
could cause a hazardous condition.
e) Adjust the riving knife in accordance with the
description in this operating manual. Incorrect
spacing, positioning and alignment can make
the riving knife ineffective in reducing the like-
lihood of kickback.
f) In order that the riving knife can function cor-
rectly, it must impinge on the workpiece. If cuts
in workpieces are too short to allow the riving knife to en-
gage, the riving knife will be ineffective. Under these con-
ditions, kickback cannot be prevented by the riving knife.
g) Use the correct saw blade for the riving knife.
In order that the riving knife functions correctly, the saw
blade diameter must fit with the corresponding riving
knife, the disc of the saw blade must be thinner than the
riving knife and the tooth width must be greater than the
riving knife thickness.
Safety information for sawing
a) m DANGER: Do not place your hands and fingers
in the sawing area or close to the saw blade.
A moment of carelessness or a slip could steer your hand
towards the saw blade and result in serious injuries.
b) Only guide the workpiece against the rotation-
al direction of the saw blade or cutting tool.
Guiding the workpiece in the same direction as the ro-
tational direction of the saw blade above the table can
lead to the workpiece and your hand being drawn into
the saw blade.
c) When performing longitudinal cuts, never use
the mitre stop to guide the workpiece, and when
transverse cutting with the mitre stop never ad-
ditionally use the parallel stop for longitudinal
adjustment. Simultaneously guiding the workpiece with
the parallel stop and mitre stop increases the probability that
the saw blade will jam and kickback will result.
d) When performing longitudinal cuts, always
apply the feed force to the workpiece be-
tween the stop rail and the saw blade. Use
a push rod if the distance between the stop
rail and saw blade is less than 150 mm, and a
push block if the distance is less than 50 mm.
This type of working aid ensures that your hands remain
a safe distance from the saw blade.
54 GB/MT
e) Only use the push rod provided by the manu-
facturer, or a push rod that has been produced
in accordance with instructions.
The push rod ensures a sufficient distance between the
hand and saw blade.
f) Never use a damaged or partially sawn push
rod.
A damaged push rod may break and lead to your hand
running into the saw blade.
g) Never work "freehand". Always use the par-
allel stop or the mitre stop to position and
guide the workpiece. "Freehand" means sup-
porting or guiding the workpiece with the
hands, rather than using the parallel stop or
mitre stop.
Free-handed sawing leads to incorrect alignment, jam-
ming and kickback.
h) Never reach around or over a turning saw
blade.
Reaching for a workpiece can lead to accidental contact
with the rotating saw blade.
i) Support long and/or wide workpieces at the
rear and/or side of the saw table, so that they
remain horizontal.
Long and/or wide workpieces tend to tilt at the edge of
the saw table; this leads to a loss of control, jamming of
the saw blade and kickback.
j) Guide the workpiece steadily and evenly. Do
not bend or twist the workpiece. If the saw
blade jams, switch off the electric tool immedi-
ately, unplug the mains plug and remedy the
cause of the jam.
If the saw blade is jammed by the workpiece, this can
lead to kickback or block the motor.
k) Do not remove partially sawn material whilst
the saw is running. Partially sawn material can stick
between the saw blade and stop rail or in the protective
cover, and may draw your fingers into the saw blade during
removal. Switch the saw off and wait until the saw blade has
come to a standstill, before removing the material.
l) For longitudinal cuts on workpieces that are
thinner than 2 mm, use an additional parallel
stop that is in contact with the table surface.
Thin workpieces can wedge under the parallel stop and
lead to kickback.
Kickback - causes and corresponding safety in-
structions
Kickback is a sudden reaction of the workpiece to a catching
or jamming saw blade, or a cut created in the workpiece at an
angle to the saw blade, or if part of the workpiece becomes
jammed between the saw blade and the parallel stop, or an-
other stationary object.
In the majority of cases, with kickback the workpiece is caught by
the rear part of the saw blade, lifted off the saw table and thrust
in the direction of the operator. Kickback is the result of incorrect
or deficient use of the circular table saw. It can be prevented by
suitable precautionary measures, as described in the following.