Dremel 200 series Original Instructions Manual page 21

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.
f. Never place your hand near the rotating
accessory. The accessory may kickback over your
hand.
g. Do not position your body in the area where the
power tool will move if kickback occurs. Kickback
will propel the tool in direction opposite to the wheel's
movement at the point of snagging.
SAFETY WARNINGS SPECIFIC FOR
GRINDING AND ABRASIVE CUTTING-OFF
OPERATIONS
a. Use only wheel types that are recommended
for your power tool and only for recommended
applications. For example: do not grind with the
side of a cut-off wheel. Abrasive cut-off wheels are
intended for peripheral grinding. Side forces applied
to these wheels may cause them to shatter.
b. For threaded abrasive cones and plugs use only
undamaged wheel mandrels with an unrelieved
shoulder flange that are of correct size and
length. Proper mandrels will reduce the possibility of
breakage.
c. Do not "jam" a cut-off 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 snagging of
the wheel in the cut and the possibility of kickback or
wheel breakage.
d. Do not position your hand in line with and behind
the rotating wheel. When the wheel, at the point
of operation, is moving away from your hand, the
possible kickback may propel the spinning wheel and
the power tool directly at you.
e. When wheel is pinched, snagged or 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 cut-off 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 pinching or snagging.
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 panels or any oversized workpiece to
minimize the risk of wheel pinching and kickback.
Large workpieces tend to snag 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.
h. Use extra caution when making a "pocket
cut" into existing walls or other blind areas.
The protruding wheel may cut gas or water pipes,
electrical wiring or objects that can cause kickback.
SAFETY WARNINGS SPECIFIC FOR
WIRE BRUSHING OPERATIONS
a. 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.
b. Allow brushes to run at operating speed for at
least one minute before using them. During this
time no one is to stand in front or in line with the
brush. Loose bristles or wires will be discharged
during the run-in time.
c. Direct the discharge of the spinning wire brush
away from you. Small particles and tiny wire
fragments may be discharged at high velocity during
the use of these brushes and may become imbedded
in your skin.
d. 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.
e. Do not exceed 15000 min
brushes.
Do not work with materials
WARNING
!
containing asbestos (asbestos is
considered carcinogenic(.
Take protective measures when
WARNING
!
during work dust can develop that
is harmful to one's health, combustible or
explosive (some dusts are considered carcinogenic(;
wear a dust mask and work with dust/chip extraction
when connectable.
ENVIRONMENT
DISPOSAL
The machine, accessories and packaging should be
sorted for environmental-friendly recycling.
21
when using wire
–1