Additional Safety Instructions - Hilti DGH 150 Handbuch

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 sanding operations:
▶ Use proper sized sanding disc paper. Follow manufacturers recommendations, when selecting
sanding paper. Larger sanding paper extending too far beyond the sanding pad presents a laceration
hazard and may cause snagging, tearing of the disc or kickback.
2.3

Additional safety instructions

Personal safety
▶ Do not tamper with or attempt to make alterations to the device.
▶ Keep the grips dry, clean and free from oil and grease.
▶ Make sure that the side handle is fitted correctly and tightened securely. Always hold the tool firmly with
both hands on the grips provided.
▶ Take breaks between working and do relaxation and finger exercises to improve the blood circulation in
your fingers.
▶ The power tool is not intended for use by debilitated persons who have received no special training.
▶ Keep the power tool out of reach of children.
▶ Do not touch rotating parts. Switch the power tool on only after it is in position at the workpiece. Touching
rotating parts, especially rotating accessory tools, can result in injury.
▶ Grinding can produce hazardous grinding dust. Before starting work, check the hazard class of the dust
that will be produced by grinding operations. When working with the power tool, whenever possible use
a dust extractor with an officially approved protection class in compliance with the locally applicable dust
protection regulations.
▶ Dust from materials such as lead-based paint, certain types of wood and concrete/masonry/stone
containing quartz, minerals or metal can be harmful to health. Contact with or inhalation of the dust can
cause allergic reactions and/or respiratory or other diseases among operators or bystanders. Certain
kinds of dust such as oakwood and beechwood dust are classified as carcinogenic, especially in
conjunction with additives for wood conditioning (chromate, wood preservative). Only specialists are
permitted to handle material containing asbestos. Use a dust extractor whenever possible. To
achieve a high level of dust collection, use a suitable dust extractor. If necessary, wear a respirator
appropriate for the type of dust generated. Make sure that the workplace is well ventilated. Comply
with national regulations applicable to the materials you will be working with.
▶ Before starting grinding work, carefully remove all protruding parts such as nails, screws, etc.
▶ Grinding can produce flying sparks. Make sure that no-one is endangered.
Power tool use and care
▶ Always before starting work, and this also applies after each break, check that the accessory tool is
secure.
Electrical safety
▶ Before beginning work, check the working area (e.g. using a metal detector) to ensure that no concealed
electric cables or gas and water pipes are present. External metal parts on the power tool can become
live, for example if you inadvertently damage electric wiring. This presents a serious risk of electric shock.
▶ Check the machine's supply cord at regular intervals and have it replaced by a qualified specialist if
found to be damaged. If the machine's supply cord is damaged it must be replaced with a specially
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2240961 English 17