Würth master EWS 115 Instructions D'emploi page 15

All manuals and user guides at all-guides.com
OBJ_BUCH-413-004.book Page 15 Thursday, June 26, 2008 9:08 AM
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
direction of the wheel's movement at the point of
pinching. Abrasive wheels may also break under
these conditions.
Kickback is the result of power tool misuse
and/or incorrect operating procedures or condi-
tions and can be avoided by taking proper pre-
cautions 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
auxiliary handle, if provided, for maxi-
mum control over kickback or torque
reaction during start-up. The operator can
control torque reactions or kickback forces, if
proper precautions are taken.
❏ Never place your hand near the rotating
accessory. Accessory may kickback over your
hand.
❏ Do not position your body in the area
where power tool will move if kickback
occurs. Kickback will propel the tool in direction
opposite to the wheel's movement at the point of
snagging.
❏ Use special care when working corners,
sharp edges, etc. Avoid bouncing and
snagging the accessory. Corners, sharp
edges or bouncing have a tendency to snag the
rotating accessory and cause loss of control or
kickback.
❏ Do not attach a saw chain woodcarving
blade or toothed saw blade. Such blades
create frequent kickback and loss of control over
the power tool.
Additional safety instructions for
grinding and cutting off operations
❏ 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.
26.6.08
❏ The guard must be securely attached to
the power tool and positioned for maxi-
mum safety, so the least amount of wheel
is exposed towards the operator. The guard
helps to protect operator from broken wheel
fragments and accidental contact with wheel.
❏ Wheels must be used only for recom-
mended applications. For example: do not
grind with the side of the cut-off wheel.
Abrasive cut-off wheels are intended for periph-
eral 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
selected 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.
❏ Do not use worn down wheels from larger
power tools. Wheels intended for larger power
tools are not suitable for the higher speed of a
smaller tool and may burst.
Additional safety warnings specific
for abrasive cutting off operations
❏ Do not "jam" the cut-off wheel or apply
excessive pressure. Do not attempt to
make an excessive depth of cut. Overstress-
ing the wheel increases the loading and suscep-
tibility 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
spinning wheel and the power tool directly at
you.
❏ When wheel is binding or when interrupt-
ing 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 attempt to remove
the cut-off wheel from the cut while the
wheel is in motion otherwise kickback
may occur. Investigate 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 reenter the cut. The wheel may
bind, walk up or kickback if the power tool is
restarted in the workpiece.
English–15