Hilti NURON DGH 130-22 Mode D'emploi Original page 11

▶ 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.
▶ 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.
▶ 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.
▶ 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.
▶ Do not operate the power tool near flammable materials. Sparks could ignite these materials.
▶ 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.
▶ 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.
▶ 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, 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 polishing operations:
▶ Do not allow any loose portion of the polishing bonnet or its attachment strings to spin freely. Tuck
away or trim any loose attachment strings. Loose and spinning attachment strings can entangle your
fingers or snag on the workpiece.
2.3 Additional safety instructions
▶ Use the product and accessories only when they are in perfect working order.
▶ Never tamper with or modify the product or accessories in any way.
▶ Keep the air vents clear at all times. Risk of burn injuries due to blocked air vents!
▶ Wear eye protection, a hard hat and ear protection while the product is in use.
▶ Before beginning work, check the working area for concealed electric cables or gas and water pipes.
External metal parts of the product could give you an electric shock or cause an explosion if you
accidentally damage an electric cable or a gas or water pipe.
▶ You and everyone in the work zone must wear personal protective equipment while the product is in
use. Depending on the application, wear a face shield, eye protection or safety glasses that can protect
against flying fragments of the workpiece. If appropriate, wear a dust mask, hearing protection, protective
gloves and a workshop apron that can protect against flying fragments of the workpiece.
▶ Wear protective gloves when changing the accessory tool. Touching the accessory tool can result in
cuts and burns.
▶ Wear eye protection. Flying fragments present a risk of injury to the body and eyes.
▶ Before starting grinding work, carefully remove all protruding parts such as nails, screws, etc.
*2359097*
2359097 English 5