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3 609 929 A31.book Seite 3 Mittwoch, 3. August 2005 3:35 15
Kickback and related warnings
Kickback is a sudden reaction to a pinched or
snagged rotating wheel, backing pad, brush or
any other accessory. Pinching or snagging
causes rapid stalling of the rotating accessory
which in turn causes the uncontrolled power
tool to be forced in the direction opposite of the
accessory's rotation at the point of the binding.
For example, if an abrasive wheel is snagged
or pinched by the workpiece, the edge of the
wheel that is entering into the pinch point can
dig into the surface of the material causing the
wheel to climb out or kick out. The wheel may
either jump toward or away from the operator,
depending on the direction of the wheel's
movement at the point of pinching. Abrasive
wheels may also break under these condi-
tions.
Kickback is the result of power tool misuse
and/or incorrect operating procedures or con-
ditions and can be avoided by taking proper
precautions as given below.
Maintain a firm grip on the power tool and
position your body and arm to allow you to
resist kickback forces. Always use the aux-
iliary handle, if provided, for maximum con-
trol over kickback or torque reaction during
start-up. The operator can control torque re-
actions or kickback forces, if proper precau-
tions are taken.
Never place your hand near the rotating ac-
cessory. The accessory may kickback over
your hand.
Do not position your body in the area
where the power tool will move if kickback
occurs. Kickback will propel the tool in the di-
rection opposite to the wheel's movement at
the point of snagging.
Use special care when working corners,
sharp edges etc. Avoid bouncing and snag-
ging the accessory. Corners, sharp edges or
bouncing have a tendency to snag the rotating
accessory and cause loss of control or kick-
back.
Do not attach a saw chain woodcarving
blade or toothed saw blade. Such blades
create frequent kickback and loss of control.
6 • 3 609 929 A31 • 05.08
Safety warnings specific for grinding
Use only wheel types that are recom-
mended for your power tool and the spe-
cific guard designed for the selected
wheel. Wheels for which the power tool was
not designed cannot be adequately guarded
and are unsafe.
Wheels must be used only for recom-
mended 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.
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 different from grinding wheel flanges.
Do not use worn down wheels from larger
power tools. A wheel intended for a larger
power tool is not suitable for the higher speed
of a smaller tool and may burst.
Safety warnings specific for wire brushing
operations
Be aware that wire bristles are thrown by
the brush even during ordinary operation.
Do not overstress the wires by applying ex-
cessive load to the brush. The wire bristles
can easily penetrate light clothing and /or skin.
If the use of a guard is recommended for
wire brushing, do not allow any interfer-
ence of the wire wheel or brush with the
guard. Wire wheel or brush may expand in di-
ameter due to work load and centrifugal
forces.
Additional safety instructions
If the power supply should be discon-
nected, e. g. due to a power outage or pull-
ing the mains plug, release the On /Off
switch and set it to the Off position. This
prevents uncontrolled restarting.
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