Hilti DCH 150-SL Mode D'emploi page 21

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
▶ Never tamper with or modify the tool in any way.
▶ After installing the second diamond slitting wheel, always place all the remaining spacer rings on
the clamping flange. The diamond slitting wheels can work loose in operation if the complete set of
spacer rings is not installed on the clamping flange - risk of injury!
▶ Ensure that the workplace is well ventilated. Exposure to dust at a poorly ventilated workplace may
result in damage to the health.
▶ Before beginning the work, check the hazard classification of the dust that will be produced.
Comply with national regulations applicable to the materials you will be working with.
▶ Dust from material such as paint containing lead, some wood species, minerals and metal may be
harmful. Contact with or inhalation of the dust may cause allergic reactions and/or respiratory or other
diseases to the operator or bystanders. Certain kinds of dust such as oak and beech wood dust are
classified as carcinogenic, especially in conjunction with additives for wood conditioning (chromate,
wood preservative). Working on materials hazardous to health (e.g. asbestos) is not permissible.
▶ Use an industrial vacuum cleaner with an officially approved protection class in compliance with
the locally applicable dust protection regulations. We recommend using a Hilti mobile extractor for
wood dust and/or mineral dust, designed for use with this power tool.
▶ Use light respiratory protection when the tool is used without a dust removal system. It is advisable
to wear a filter class P2 dust mask.
▶ Wear eye protection. Flying fragments present a risk of injury to the body and eyes.
▶ Always hold the power tool with both hands on the grips provided. Keep the grips dry, clean and
free from oil and grease.
▶ Wear protective gloves when changing accessory tools as they get hot during use.
▶ Wear ear protectors. Exposure to noise can cause hearing loss.
▶ Take breaks between working and do relaxation and finger exercises to improve the blood
circulation in your fingers.
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 of the power tool may become
live, for example, when an electric cable is damaged accidentally. This presents a serious risk of electric
shock.
*2208335*
2208335 English 17