Würth EWS 7-115 BASIC Manual Del Usuario página 19

Do not operate the power tool near flammable
r
materials. Sparks could ignite these materials.
Do not use accessories that require liquid
r
coolants. Using water or other liquid coolants may result
in electrocution or shock.
Kickback and Related Warnings
Kickback is a sudden reaction to a pinched or snagged rotat-
ing wheel, backing pad, brush or any other accessory. Pinch-
ing 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 to-
ward 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 conditions and can be avoided by
taking proper precautions as given below.
Maintain a firm grip on the power tool and posi-
r
tion your body and arm to allow you to resist
kickback forces. Always use auxiliary 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.
Never place your hand near the rotating access-
r
ory. Accessory may kickback over your hand.
Do not position your body in the area where
r
power tool will move if kickback occurs. Kick-
back will propel the tool in direction opposite to the wheel's
movement at the point of snagging.
Use special care when working corners, sharp
r
edges etc. Avoid bouncing and snagging the ac-
cessory. Corners, sharp edges or bouncing have a tend-
ency to snag the rotating accessory and cause loss of con-
trol or kickback.
Do not attach a saw chain woodcarving blade
r
or toothed saw blade. Such blades create frequent
kickback and loss of control.
Safety Warnings specific for Grinding and
Abrasive Cutting-Off operations
Use only wheel types that are recommended
r
for your power tool and the specific guard de-
signed for the selected wheel. Wheels for which the
power tool was not designed cannot be adequately
guarded and are unsafe.
The grinding surface of centre depressed wheels
r
must be mounted below the plane of the guard
lip. An improperly mounted wheel that projects through
the plane of the guard lip cannot be adequately protected.
The guard must be securely attached to the
r
power tool and positioned for maximum safety,
so the least amount of wheel is exposed to-
wards the operator. The guard helps to protect oper-
ator from broken wheel fragments, accidental contact with
wheel and sparks that could ignite clothing.
Wheels must be used only for recommended ap-
r
plications. For example: do not grind with the
side of cut-off wheel. Abrasive cut-off wheels are in-
tended for peripheral grinding, side forces applied to these
wheels may cause them to shatter.
Always use undamaged wheel flanges that are
r
of correct size and shape for your selected
wheel. Proper wheel flanges support the wheel thus redu-
cing 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
r
power tools. Wheel intended for larger power tool is
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 excess-
r
ive pressure. Do not attempt to make an excess-
ive 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.
Do not position your body in line with and be-
r
hind 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 interrupting a
r
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 work-
r
piece. Let the wheel reach full speed and care-
fully 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
r
minimize the risk of wheel pinching and kick-
back. Large workpieces tend to sag under their own
weight. Supports must be placed under the workpiece near
19