Kickback And Related Warnings - Metabo CS 23-355 Manual Original

3.2

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 cutting unit to be
forced upwards toward the operator.
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. 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. The operator can control
upward kickback forces, if proper precautions are
taken.
b) Do not position your body in line with the
rotating wheel. If kickback occurs, it will propel the
cutting unit upwards toward the operator.
c) 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.
d) 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.
e) When the wheel is binding or when
interrupting a cut for any reason, switch off the
power tool and hold the cutting unit 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.
f) 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.
g) Support 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.
3.3 Additional Safety Instructions
Always wear eye goggles and hearing
protection. Put on other protective gear if
necessary, such as dust masks, gloves,
helmet and apron. When judging if face or dust
masks are necessary, take into consideration
whether the workpiece to be machined or its coating
are potentially harmful to health. Put on protective
clothing in case of doubt.
Wear ear protectors when working for long periods
of time. High noise levels over a prolonged period of
time may affect your hearing.
Do not work with magnesium.
Do not use power tools in a damp or wet
environment.
Do not use the machine in environments where
there is the risk of explosion, in which sparks can
cause fire, explosions or the like.
Do not use saw blades.
Always ensure the metal cut-off machine is stable
on a flat surface; when using the cut-off machine on
a workbench, always attach the metal cut-off
machine with appropriately long, sturdy screws.
Danger of crushing! Do not reach into the area of the
joint when lowering the lever!
Never operate the machine without a protective
hood (7).
Always tilt protective hood (7) all the way down.
Be sure that the movable protective hood (7) is not
jammed. It must be able to move.
Check the power tool for potential damage.
-Before continuing to use the power tool, protective
mechanisms or lightly damaged parts must be
carefully inspected for correct operation.
-Damaged protective mechanisms and parts must
be repaired or replaced by an approved specialist
workshop, as long as nothing else is specified in the
instruction manual.
Machine malfunctions, incl. protective hoods or
cutting discs, must immediately be reported when
they occur. The malfunction must be properly
remedied.
Regularly check the connection lead of the power
tool and have it repaired by an approved expert,
should it be damaged.
Regularly check extension cables and replace
them, should they be damaged.
Use only three-conductor cables.
Keep the handles dry, clean and free of oil and
grease.
Do not use a low-power machine for demanding
jobs.
Adhere to the instructions for lubrication and tool
replacement.
Store the machine in a dry, high or secured place,
outside the reach of children.
When working in dusty conditions, ensure that
ventilation openings are not blocked. Should it be
necessary to remove the dust, first disconnect the
power tool from the mains.
In case of extreme dust deposits, the machine
cleaning cycles must be shortened and/or a
residual-current-operated circuit-breaker (RCCB)
must be connected upstream.
ENGLISH en
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