Hilti NURON AG 5D-22 125, Original Operating Instructions

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*2272031*
2272031 English 5
stopping flying debris generated by various applications. The dust mask or respirator must be capable
of filtrating particles generated by the particular application. Prolonged exposure to high intensity noise
may cause hearing loss.
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Keep bystanders a safe distance away from work area. Anyone entering the work area must wear
personal protective equipment. Fragments of workpiece or of a broken accessory may fly away and
cause injury beyond immediate area of operation.
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Hold the power tool by insulated gripping surfaces only, when performing an operation where the
cutting tool may contact hidden wiring. Contact with a "live" wire will also make exposed metal parts
of the power tool "live" and could give the operator an electric shock.
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Position the cord clear of the spinning accessory. If you lose control, the cord may be cut or snagged
and your hand or arm may be pulled into the spinning accessory.
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Never lay the power tool down until the accessory has come to a complete stop. The spinning
accessory may grab the surface and pull the power tool out of your control.
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Do not run the power tool while carrying it at your side. Accidental contact with the spinning
accessory could snag your clothing, pulling the accessory into your body.
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Regularly clean the power tool’s air vents. The motor’s fan will draw the dust inside the housing and
excessive accumulation of powdered metal may cause electrical hazards.
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Do not operate the power tool near flammable materials. Sparks could ignite these materials.
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Do not use accessories that require liquid 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 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 conditions and can
be avoided by taking proper precautions as given below.
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Maintain a firm grip with both hands on the power tool and position your body and arms 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.
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Never place your hand near the rotating accessory. Accessory may kickback over your hand.
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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.
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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.
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Do not attach a saw chain woodcarving blade, segmented diamond wheel with a peripheral gap
greater than 10 mm or toothed saw blade. Such blades create frequent kickback and loss of control.
Safety warnings specific for grinding and cutting-off operations:
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Use only wheel types that are specified for your power tool and the specific guard designed for
the selected wheel. Wheels for which the power tool was not designed cannot be adequately guarded
and are unsafe.
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The grinding surface of centre depressed wheels 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.
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The guard must be securely attached to the power tool and positioned for maximum safety, so the
least amount of wheel is exposed towards the operator. The guard helps to protect the operator from
broken wheel fragments, accidental contact with wheel and sparks that could ignite clothing.
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Wheels must be used only for specified applications. For example: do not grind with the side of
cut-off wheel. Abrasive cut-off wheels are intended for peripheral grinding, side forces applied to these
wheels may cause them to shatter.
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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 different from grinding wheel flanges.