Bosch GWS 8-115 PROFESSIONAL Bedienungsanleitung Seite 19

1 609 929 J28.book Seite 4 Donnerstag, 18. August 2005 1:54 13
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 auxil-
iary 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 power tool will move if kickback oc-
curs. Kickback will propel the tool in the direc-
tion 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.
Safety warnings specific for grinding and
abrasive cutting off operations
Always use the guard designed for the type
of wheel you are using. The guard must be
securely attached to the power tool and po-
sitioned for maximum safety, so the least
amount of wheel is exposed towards the
operator. The guard helps to protect the oper-
ator from broken wheel fragments and acci-
dental contact with the wheel.
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.
20 • 1 609 929 J28 • 05.09
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.
Additional safety warnings specific for abra-
sive cutting off operations
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 break-
age.
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.
When the wheel is binding or when inter-
rupting a cut for any reason, switch off the
power tool and hold the power tool motion-
less until the wheel comes to a complete
stop. Never attempt to remove the cut-off
wheel from the cut while the wheel is in mo-
tion, otherwise kickback may occur. Inves-
tigate and take corrective action to eliminate
the cause of wheel binding.
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 restarted in the workpiece.
Support panels or any oversized workpiece
to minimize the risk of wheel pinching and
kickback. Large workpieces tend to sag under
their own weight. Supports must be placed un-
der the workpiece near the line of cut and near
the edge of the workpiece on both sides of the
wheel.
English - 4