Hilti AG 500-12D Manual De Instrucciones página 10

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▶ Keep bystanders a safe distance away from the working area. Anyone entering the working area
must wear personal protective equipment. Fragments of the workpiece or of a broken accessory tool
may fly off and cause injury beyond the immediate working area.
▶ Hold the power tool only by the insulated gripping surfaces when performing an operation where
the accessory tool may contact hidden wiring or the power tool's own supply cord. If the accessory
tool comes into contact with a live wire, metal parts of the power tool can also become live, resulting in
an electric shock.
▶ Keep the supply cord clear of rotating accessories. If you lose control of the power tool, the supply
cord may be cut through or snagged and your hand or arm could be pulled toward the rotating accessory.
▶ Never lay the power tool down until the accessory comes to a complete stop. The rotating accessory
may come into contact with the surface, possibly causing you to loose control of the power tool.
▶ Do not run the power tool while carrying it at your side. Accidental contact with the rotating accessory
could snag your clothing, pulling the accessory toward your body with a risk of injury.
▶ Regularly clean the power tool's air vents. The motor's fan will draw the dust inside the housing and
an excessive accumulation of metal particles may cause electrical hazards.
▶ Do not operate the power tool near flammable materials. Sparks could ignite these materials.
▶ Do not use accessories that require liquid coolants. Use of water or other liquid coolants may result
in a risk of electric shock.
Kickback and the appropriate safety instructions
Kickback is a sudden reaction to a pinched or snagged rotating disc, 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 to the accessory's direction of rotation at the
point of binding.
For example, if an abrasive disc is snagged or pinched by the workpiece, the edge of the disc entering the
pinch point can dig into the surface of the material causing the disc to climb out or kick back. The disc may
either jump toward or away from the operator, depending on the disc's direction of movement at the point
of pinching. Abrasive discs may also break under these conditions.
Kickback is the result of power tool misuse and/or incorrect operating procedures or conditions. It can be
avoided by taking the proper precautions as described 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 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 bring your hand close to a rotating accessory. The accessory may kick back 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 direction opposite to the disc's movement at the point of snagging.
▶ Take special care when working on corners, sharp edges, etc. Avoid bouncing and snagging the
accessory. Corners, sharp edges or bouncing tend to snag the rotating accessory. This causes loss of
control or kickback.
▶ Do not attach a saw chain or toothed saw blade. Devices of this kind cause frequent kickback and
loss of control of the power tool.
Safety instructions specific to grinding and abrasive cutting operations:
▶ Use only disc types approved for use with your power tool and the guard designed for use with
the selected disc. Discs for which the power tool was not designed cannot be adequately guarded and
are unsafe.
▶ Offset (dished) grinding discs must be fitted so that their grinding surface does not project beyond
the edge of the guard. Incorrectly fitted grinding discs, the surface of which projects beyond the edge
of the guard, cannot be adequately guarded.
▶ The guard must be securely mounted on the power tool and, for maximum safety, it must be
adjusted so that as little as possible of the grinding disc is exposed on the side facing the operator.
The guard helps to protect the operator from flying fragments, inadvertent contact with the disc and
sparks that could cause the operator's clothing to catch fire.
▶ Discs may be used only for the recommended applications. For example: Do not grind with the
side of a cutting disc. Abrasive cutting discs are intended for peripheral abrasive cutting. Lateral forces
applied to these discs may cause them to shatter.
▶ Always use an undamaged disc mounting flange of the correct size and shape for the selected
disc. Proper flanges support the disc, thus reducing the possibility of disc breakage. Flanges for cutting
discs may be different from flanges for grinding discs.
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