Scheppach BCAG125-20ProS Traduction Des Instructions D'origine page 23

Additional safety instructions for all applications
Kickback and related safety warnings
Kickback is a sudden reaction to a pinched or
snagged rotating insertion tool, such as a grinding
wheel, grinding pad, brush wire, etc. Pinching or
snagging causes the rotating insertion tool to stop
abruptly which in turn causes the uncontrolled power
tool to be forced in the direction opposite of the inser-
tion tool's rotation at the point of the binding.
For example, if a grinding wheel is snagged or
pinched by the workpiece, the edge of the grinding
wheel which is entering into the workpiece may be-
come caught causing the grinding wheel to break off
or kick back. The grinding wheel then either jumps
toward or away from the operator, depending on
the direction of the wheels' movement at the point
of pinching. Grinding wheels may also break under
these conditions.
Kickback is the result of power tool misuse and/or in-
correct operating procedures or conditions. It can be
avoided by taking proper precautions as given below.
a) Maintain a firm grip on the power tool and
position your body and arm to allow you to
resist kickback forces. Always use auxilia-
ry handle, if provided, for maximum control
over kickback or torque reaction during start-
up. The operator can control torque reactions or
kickback forces, if proper precautions are taken.
b) Never place your hand near the rotating in-
sertion tool. Insertion tool may kickback over
your hand.
c) Do not position your body in the area where
power tool will move if kickback occurs. Kick-
back will propel the tool in the direction opposite
to the wheel's movement at the point of snagging.
d) Use special care when working corners,
sharp edges, etc. Avoid bouncing and snag-
ging the insertion tool. Corners, sharp edges
or bouncing have a tendency to snag the rotating
insertion tool and cause loss of control or kick-
back.
e) Do not attach a saw chain blade for wood-cut-
ting or a toothed saw blade. Such insertion
tools create frequent kickback and loss of control.
Safety warnings specific for grinding and abra-
sive cutting-off operations:
a) Use only wheel types that are recommended
for your power tool and the specific guard
designed for the selected wheel. Wheels for
which the power tool was not designed cannot be
adequately shielded and are unsafe.
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b) Depressed centre grinding wheels must be
mounted in such a way that their grinding
surface does not protrude above the plane of
the guard edge. An improperly mounted wheel
that protrudes above the plane of the guard edge
cannot be adequately shielded.
c) The guard must be securely attached to the
power tool and positioned for maximum safe-
ty, so the least amount of wheel is exposed
towards the operator. The guard helps to pro-
tect the operator from broken wheel fragments,
accidental contact with wheel and sparks that
could ignite clothing.
d) Wheels must be used only for recommended
applications. For example: Do not grind with
the side of a cut-off wheel. Abrasive cut-off
wheels are intended for peripheral grinding. Side
forces applied to these wheels may cause them
to shatter.
e) Always use undamaged wheel flanges that
are of correct size and shape for your se-
lected wheel. Proper wheel flanges support
the wheel thus reducing the possibility of wheel
breakage. Flanges for cut-off wheels may be dif-
ferent from grinding wheel flanges.
f) Do not use worn down wheels from larger
power tools. Wheels intended for larger pow-
er tool are not suitable for the higher speed of a
smaller tool and may burst.
Additional safety warnings specific for abrasive
cutting-off operations:
a) Do not "jam" the cut-off wheel or apply ex-
cessive pressure. Do not attempt to make
an excessive depth of cut. Overstressing the
wheel increases the loading and susceptibility to
twisting or binding of the wheel in the cut and the
possibility of kickback or wheel breakage.
b) Do not position your body in line with and
behind the rotating wheel. When the wheel, at
the point of operation, is moving away from your
body, the possible kickback may propel the spin-
ning wheel and the power tool directly at you.
c) When wheel is binding or when interrupting a
cut for any reason, switch off the power tool
and hold the power tool motionless until the
wheel comes to a complete stop. Never at-
tempt to remove the cut-off wheel from the
cut while the wheel is in motion otherwise
kickback may occur. Investigate and take cor-
rective action to eliminate the cause of wheel
binding.
d) Do not restart the cutting operation in the
workpiece. Let the wheel reach full speed
and carefully re-enter the cut. The wheel may
bind, walk up or kickback if the power tool is re-
started in the workpiece.
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