Additional Safety Instructions - Hilti DCH 300 Manual De Instrucciones

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 line with the rotating wheel. 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.
▶ Do not "jam" the wheel or apply excessive pressure. Do not attempt to make an excessive 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.
▶ When wheel is binding or when interrupting a 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
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 workpiece. Let the wheel reach full speed and carefully
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 minimize the risk of wheel pinching and kickback.
Large workpieces tend to sag under their own weight. Supports must be placed under the workpiece
near the line of cut and near the edge of the workpiece on both sides of the wheel.
▶ Use extra caution when making a "pocket cut" into existing walls or other blind areas. The
protruding wheel may cut gas or water pipes, electrical wiring or objects that can cause kickback.
2.3

Additional safety instructions

Personal safety
▶ When working, always guide the supply cord and the extension cable to the rear and away from the
power tool. This reduces the risk of tripping over cables while work is in progress.
▶ If work involves break-through, always secure the area on the side opposite where the work is carried
out. Pieces of debris could drop out and/or fall down and injure other persons.
▶ Use the product only when it is in perfect working order.
▶ Never tamper with or modify the power tool in any way.
▶ Wear protective gloves, especially when changing discs, when adjusting the guard and when installing
the depth gauge.
▶ Use a dust removal system and suitable mobile dust extractor whenever possible. 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.
▶ Before starting work, check the hazard class of the dust that will be produced when working. Use
an industrial vacuum cleaner with an officially approved protection class in compliance with the locally
applicable dust protection regulations.
▶ Make sure that the workplace is well ventilated and, if necessary, wear a respirator appropriate for
the type of dust generated. 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.
▶ Wear light respiratory protection when using the power tool for dry cutting without a vacuum dust removal
system. Close the cap over the dust removal hose connector.
▶ Do not touch rotating parts – risk of injury! Switch the power tool on only after it is in position at the
workpiece.
▶ Take breaks between working and do relaxation and finger exercises to improve the blood circulation in
your fingers. Exposure to vibration during long periods of work can lead to disorders of the blood vessels
and nervous system in the fingers, hands and wrists.
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.
22 English
Printed: 23.10.2018 | Doc-Nr: PUB / 5459191 / 000 / 00
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