Safety Warnings Specific For Grinding And Abrasive Cutting- Off Operations - Porter-Cable PCC761 Instruction Manual

20v max* 4-1/2 inch (115mm) lithium cut off tool / grinder
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movement at the point of snagging.
d)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.
e) Do not attach a saw chain
woodcarving blade or toothed saw
blade. Such blades create frequent
kickback and loss of control.
SAFETY WARNINGS
SPECIFIC FOR GRINDING
AND ABRASIVE CUTTING-
OFF OPERATIONS
a) Use only wheel types that are re-
commended for your power tool and
the specific guard designed for the
selected wheel. Wheels for which the
power tool was not designed cannot be
adequately guarded and are unsafe.
b) The grinding surface of the center
depressed wheels must be mounted
below the plane of the guard lip. An
improperly mounted wheel that projects
through the plane of the guard lip
cannot be adequately protected.
c) 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
broken wheel fragments, accidental
contact with wheel and sparks that
could ignite clothing.
d) Wheels must be used only for
recommended applications. For
example: do not grind with the side
of cut-off wheel. Abrasive cut-off
wheels are intended for peripheral
grinding, side forces applied to these
wheels may cause them to shatter.
e) Always use undamaged wheel flanges
that are of correct size and shape for
your selected wheel. Proper wheel
flanges support the wheel thus reducing
the possibility of wheel breakage. Flanges
for cut-off wheels may be different from
grinding wheel flanges.
f) Do not use worn down wheels from
larger power tools. Wheel intended for
larger power tool is not suitable for the
higher speed of a smaller tool and may
burst.
ADDITIONAL SAFETY WARNINGS
SPECIFIC FOR ABRASIVE CUTTING-
OFF OPERATION
a) Do not "jam" the cut-off wheel
or apply excessive pressure. Do
not attempt to make an excessive
depth of cut. Over stressing 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.
b) Do not position your body in line
with and behind the rotating wheel.
When the wheel, at the point of
operation, is moving away from your
body, the possible kickback may
propel the spinning wheel and the
power tool directly at you.
c) When wheel is binding 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 binding.
d) Do not restart the cutting operation
in the workpiece. Let the wheel
reach full speed and carefully
reenter the cut. The wheel may bind,
walk up or kickback if the power tool is
restarted in the workpiece.
e) Support panels or 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.
f) 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.
g) It is recommended to use grinding/
cutting wheels no thicker than 1/4
inch (6mm) thick.
SAFETY WARNINGS SPECIFIC FOR
SANDING OPERATIONS
a) 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 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) If the use of a guard is
recommended for wire brushing, do
not allow any interference of the wire
5

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