Bedienungsanleitung DeWalt DWE4579 T 1 (Seite 9 von 48) (Englisch, Französisch)

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ENGLISH

FURTHER SAFETY INSTRUCTIONS

FOR ALL OPERATIONS

Causes and Operator Prevention

of Kickback

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 tool misuse and/or incorrect

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 position 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 reaction or kickback forces, if proper

precautions are taken.

b) Never place your hand near the rotating

accessory. 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 accessory. 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.

Safety Warnings Speciﬁ c 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 guard must be securely attached

to the power tool and positioned for

maximum safety, so the least amount of

wheel is exposed towards the operator. The

guard helps to protect the operator from broken

wheel fragments, accidental contact with wheel

and sparks that could ignite clothing.

c) Wheels must be used only for

recommended applications. For example:

do not grind with the side of cut-off wheel.

Abrasive cut-off wheels are intended for

peripheral grinding, side forces applied to these

wheels may cause them to shatter.

d) Always use undamaged wheel flanges

that are of correct size and shape for your

selected wheel. Proper wheel flanges support

the wheel thus reducing the possibility of wheel

breakage. Flanges for cut-off wheels may be

different from grinding wheel flanges.

e) 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.

Additional Safety Warnings Speciﬁ c

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 operations, is moving away from

your body, the possible kickback may propel the

spinning wheel and the power tool directly at

you.

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