Makita 4157KB Bedienungsanleitung Seite 5

inspecting and installing the wheel, position
yourself and bystanders away from the plane
of the rotating wheel and run the power tool at
maximum no load speed for one minute.
Damaged wheels will normally break apart during
this test time.
9. Wear personal
Depending on application, use face shield,
safety goggles
appropriate, wear
protectors, gloves and shop apron capable of
stopping small
fragments. The eye protection must be capable of
stopping flying debris generated by various
operations. The dust mask or respirator must be
capable of filtrating particles generated by your
operation. Prolonged exposure to high intensity
noise may cause hearing loss.
10. Keep bystanders a safe distance away from
work area. Anyone entering the work area
must wear personal protective equipment.
Fragments of workpiece or of a broken wheel may
fly away and cause injury beyond immediate area
of operation.
11. Hold the power tool by insulated gripping
surfaces only, when performing an operation
where the cutting accessory may contact
hidden wiring or its own cord. Cutting
accessory contacting a "live" wire may make
exposed metal parts of the power tool "live" and
could give the operator an electric shock.
12. Position the cord clear of the spinning
accessory. If you lose control, the cord may be cut
or snagged and your hand or arm may be pulled
into the spinning wheel.
13. Never lay the power tool down until the
accessory has come to a complete stop. The
spinning wheel may grab the surface and pull the
power tool out of your control.
14. Do not run the power tool while carrying it at
your side. Accidental contact with the spinning
accessory could snag your clothing, pulling the
accessory into your body.
15. Regularly clean the power tool's air vents. The
motor's fan will draw the dust inside the housing
and excessive accumulation of powdered metal
may cause electrical hazards.
16. Do not operate the power tool near flammable
materials. Sparks could ignite these materials.
17. Do not use accessories that require liquid
coolants. Using water or other liquid coolants may
result in electrocution or shock.
18. Kickback and related warnings
− Kickback is a sudden reaction to a pinched or
snagged rotating wheel. Pinching or snagging
causes rapid stalling of the rotating wheel
which in turn causes the uncontrolled power
tool to be forced in the direction opposite of
protective equipment.
or safety glasses.
dust mask, hearing
abrasive or workpiece
the wheel's rotation at the point of the binding.
− For example, if a 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
As movement at the point of pinching.
− 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.
Maintain a firm grip on the power tool and
•
position your body and arm to allow you to
resist
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.
Never place your hand near the rotating
•
accessory. Accessory may kickback over your
hand.
Do not position your body in line with and
•
behind 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 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
•
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.
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kickback forces.
wheel is binding
Always use
or when