Festool RAS 115.04 E Manual De Instrucciones página 13

must wear personal protective equip-
ment. Parts of the workpiece or broken ac-
cessories can fl y off and cause injury outside
the immediate work area.
• Always hold the machine by the insulated
handles if you intend to perform work that
may pose a risk of cutting into hidden
power cables or your own machine cable.
Contact with live cables transfers an electric
current to metallic machine components and
causes electric shocks.
• Keep the power cable away from rotating
parts. If you lose control, the power cable
could be cut or become stuck and your hand or
arm could be drawn into the rotating parts.
• Never set the machine down until the
tool has stopped completely. Turning tools
can catch on the storage surface, causing you
to lose control of the machine.
• Never allow the machine to operate while
carrying it at your side. The rotating tool
can catch on your clothing by accident and
cause serious cutting injuries.
• Clean the air vent slits on your machine
on a regular basis. The cooling air fan sucks
the dust into the machine and excessive de-
posits of metal dust can result in electrical
hazards.
• Never operate the machine near com-
bustible materials. Sparks can ignite these
materials.
• Never use tools that have to be liquid-
cooled. Water and other liquid coolants can
cause potentially fatal electric shocks.
Cause and prevention of kickbacks
A kickback is a sudden reaction to jamming
or catching of a rotating disc, a support
plate, a brush or other accessory. Jamming
or catching results in a rapid standstill of the
rotating accessory, whereby, as a counter-
reaction, an out-of-control machine is accel-
erated around the jamming point in a direc-
tion of rotation opposed to the accessory.
If, for example, a sanding disc is jammed or
caught by the workpiece, the disc circumfer-
ence can dig into the workpiece surface at
the jamming point, causing the disc to be
expelled. The disc can either fl y towards or
away from the user, depending on the direction
of rotation of the disc at the jamming point.
This can also cause sanding discs to break.
A kickback is the result of misuse of the machine
and/or incorrect method of work or operation
and can be avoided by closely observing the
following precautionary measures.
• Always hold the machine fi rmly and po-
sition your body and arms such that you
can control any kickback force. Always use
the auxiliary handle, if included in the delivery,
to ensure optimum control over kickbacks or
reaction torques during start-up. The user can
control reaction torques or kickbacks if suit-
able precautionary measures are taken.
• Never place your hands near rotating
tools. Tools can kick back over your hand.
• Never position your body in the area in
which the machine moves in the event
of a kickback. A kickback accelerates the
machine in the direction of rotation opposed
to the disc at the jamming point.
• Take extra care when working in corners,
on sharp edges, etc. Avoid kickbacks and
prevent the tool from seizing. Corners, sharp
edges or a jump back tend to cause the ro-
tating tool to catch, thus leading to a loss of
control or a kickback.
• Never install a chainsaw or saw blades
with teeth to cut wood. Such blades often
cause kickback and loss of control.
Special safety instructions for fi ne sanding
• Do not use excessively large sanding
discs when fi ne sanding. Observe the
specifi cations of the manufacturer when
selecting abrasive discs. A sanding disc
that is too large and protrudes over the sand-
ing pad represents a cutting injury hazard and
can cause catching, disc tears or kickbacks.
Safety Rules specifi c for Grinding and Abra-
sive Cutting Off operations
• Use only wheel types that are recom-
mended for your power tool and the
specifi c guard designed for the selected
wheel. Wheels for which the power tool was
not designed cannot be adequately guarded
and are unsafe.
• 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 operator from bro-
ken wheel fragments and accidental contact
with wheel.
• Wheels must be used only for recom-
mended applications. For example: do
not grind with the side of cut-off wheel.
Abrasive cut-off wheels are intended for pe-
ripheral grinding, side forces applied to these
wheels may cause them to shatter.
• Always use undamaged wheel fl anges
that are of correct size and shape for
your selected wheel. Proper wheel fl anges
support the wheel thus reducing the possi-
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