Dremel 8240 Traducción De Las Instrucciones Originales página 25

hand(s) during the start-up. The
reaction torque of the motor, as it
accelerates to full speed, can cause the
tool to twist.
l. Use clamps to support workpiece
whenever practical. Never hold a small
workpiece in one hand and the tool in
the other hand while in use. Clamping
a small workpiece allows you to use
your hand(s) to control the tool. Round
material such as dowel rods, pipes or
tubing have a tendency to roll while being
cut, and may cause the bit to bind or
jump toward you.
m. Never lay the power tool down until
the accessory has come to a complete
stop. The spinning accessory may grab
the surface and pull the power tool out of
your control.
n. After changing the bits or making any
adjustments, make sure the collet
nut, chuck or any other adjustment
devices are securely tightened. Loose
adjustment devices can unexpectedly
shift, causing loss of control, loose
rotating components will be violently
thrown.
o. 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.
p. 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.
q. Do not operate the power tool near
flammable materials. Sparks could ignite
these materials.
r. Do not use accessories that require
liquid coolants. Using water or other
liquid coolants may result in electrocution
or shock.
KICKBACK AND RELATED
WARNINGS
Kickback is a sudden reaction to a pinched or
snagged rotating wheel, sanding band, 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.
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.
The operator can control kickback forces,
if proper precautions are taken.
b. 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.
c. Do not attach a toothed saw blade.
Such blades create frequent kickback and
loss of control.
d. Always feed the bit into the material in
the same direction as the cutting edge
is exiting from the material (which is
the same direction as the chips are
thrown). Feeding the tool in the wrong
direction causes the cutting edge of the
bit to climb out of the work and pull the
tool in the direction of this feed.
e. When using rotary files, cut-off
wheels, high-speed cutters or tungsten
carbide cutters, always have the work
securely clamped. These wheels will
grab if they become slightly canted in the
groove, and can kickback. When a cut-off
wheel grabs, the wheel itself usually
breaks. When a rotary file, high-speed
cutter or tungsten carbide cutter grabs, it
may jump from the groove and you could
lose control of the tool.
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