Festool RAS 115.04 E - Manual (Page 12)

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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.
• 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 car-
rying 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 deposits of metal
dust can result in electrical hazards.
• Never operate the machine near combustible
materials. Sparks can ignite these materials.
• Never use tools that have to be liquid-cooled. Wa-
ter 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
accelerated around the jamming point in a direction
of rotation opposed to the accessory. If, for example,
a sanding disc is jammed or caught by the workpiece,
the disc circumference 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 sand-
ing 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 position 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 suitable 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 rotating 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.
Safety warnings specifi c for sanding operations
- 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 Rules specifi c for Wire Brushing opera-
tions
• Be aware that wire bristles are thrown by the
brush even during ordinary operation. Do not
overstress the wires by applying excessive load
to the brush. The wire bristles can easily penetrate
light clothing and/or skin.
• If the use of a guard is recommended for wire
brushing, do not allow any interference of the
wire wheel or brush with the guard. Wire wheel
or brush may expand in diameter due to work load
and centrifugal forces.
- Only for AS/NZS: The tool shall always be sup-
plied via residual current device with a rated re-
sidual current of 30 mA or less.
2.3 Emission levels
Levels determined in accordance with EN 60745 are
typically:
Sound pressure level
82 dB(A)
Noise level 93 dB(A)
Measuring uncertainty allowance K = 3 dB
Wear ear protection.
Overall vibration levels (vector sum for three direc-
tions) measured in accordance with EN 60745:
Vibration emission level
(3-axis)
a
h
= 3,5 m/s²
Uncertainty K = 2,5 m/s²
The specifi ed emissions values (vibration, noise)
– are used to compare machines.
– They are also used for making preliminary
estimates regarding vibration and noise loads