Bedienungsanleitung Dremel 7700 (Seite 12 von 88) (Deutsch, Englisch, Holländisch, Dänisch, Französisch, Italienisch, Schwedisch, Norwegisch, Finnisch)

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KICKBACK AND RELATED WARNINGS

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 power 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 reactions

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 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. 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.

c. 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.

d. 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 shatter.

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 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.

e. 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.

f. 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.

SAFETY WARNINGS SPECIFIC FOR

SANDING OPERATIONS

a. Do not use excessively oversized sanding disc paper.

Follow manufacturers recommendations, when selecting

sanding paper. Larger sanding paper extending beyond the

sanding pad presents a laceration hazard and may cause

snagging, tearing of the disc or kickback.

SAFETY WARNINGS SPECIFIC FOR

POLISHING OPERATIONS

a. Do not allow any loose portion of the polishing bonnet

or its attachment strings to spin freely. Tuck away or

trim any loose attachment strings. Loose and spinning

attachment strings can entangle your fingers or snag on the

workpiece.

Dremel 7700 Seite 12

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