Hilti DCG 230-D Betriebsanleitung PDF herunterladen (Seite 28)

pinching. Abrasive wheels may also break under these

conditions.

Kickback is the result of power tool misuse and/or in-

correct operating procedures or conditions and can be

avoided by taking proper precautions as given below.

a) Maintain a firm grip on the power tool and po-

sition your body and arm 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.

b) Never place your hand near the rotating access-

ory. Accessory may kickback over your hand.

c) 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.

d) Use special care when working corners, sharp

edges etc. Avoid bouncing and snagging the ac-

cessory. Corners, sharp edges or bouncing have a

tendency to snag the rotating accessory and cause

loss of control or kickback.

e) Do not attach a saw chain woodcarving blade or

toothed saw blade. Such blades create frequent

kickback and loss of control.

5.4 Safety warnings specific for grinding and

abrasive cutting-off operations

a) Use only wheel types that are recommended 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.

b) 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.

c) The guard must be securelyattached to the power

tool and positioned for maximum safety, so the

least amount of wheel is exposed towards the op-

erator. The guard helps to protect operator from

broken wheel fragments, accidental contact with

wheel and sparks that could ignite clothing.

d) Wheels must be used only for recommended ap-

plications. For example: do not grind with the side

of cut-off wheel. Abrasive cut-off wheels are inten-

ded for peripheral grinding, side forces applied to

these wheels may cause them to shatter.

e) Always use undamaged wheel flanges that are of

correct size and shape for your selected wheel.

Proper wheel flanges support the wheel thus redu-

cing the possibility of wheel breakage. Flanges for

cut-off wheels may be different from grinding wheel

flanges.

f) Do not use worn down wheels from larger power

tools. Wheel intended for larger power tool is not

suitable for the higher speed of a smaller tool and

may burst.

5.5 Additional safety warnings specific for abrasive

cutting-off operations

a) Do not "jam" the cut-off 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.

b) Do not position your body in line with and behind

the rotating wheel. When the wheel, at the point

of operation, is moving away from your body, the

possible kickback may propel the spinning wheel

and the power tool directly at you.

c) 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

cut-off 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.

d) Do not restart the cutting operation in the work-

piece. 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 work-

piece.

e) Support panels or any oversized workpiece to

minimize the risk of wheel pinching and kickback.

Large workpiecestend 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.

f) Use extra caution when making a "pocket cut"

into existing walls or other blind areas. The pro-

truding wheel may cut gas or water pipes, electrical

wiring or objects that can cause kickback.

5.6 Additional safety instructions

5.6.1 Personal safety

a) Always hold the power tool securely with both

hands on the grips provided. Keep the grips dry,

clean and free from oil and grease.

b) Breathing protection must be worn if the power

tool is used without a dust removal system for

work that creates dust.

c) Improve the blood circulation in your fingers by

relaxing your hands and exercising your fingers

during breaks between working.

d) Avoid touching rotating parts. Switch the power

tool on only after bringing it into position at the

workpiece. Touching rotating parts, especially rotat-

ing insert tools, may lead to injury.

e) Always lead the supply cord and extension cord

away from the power tool to the rear while work-

ing. This helps to avoid tripping over the cord while

working.

f) When grinding with straight grinding discs and

cutting with cutting discs in metalworking applic-

ations, use the guard with cover plate.

Printed: 20.11.2013 | Doc-Nr: PUB / 5069494 / 000 / 02

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