DeWalt DWE4206 Original Instructions Manual page 38

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contacting a "live" wire may make exposed metal parts of the
power tool "live" and could give the operator an electrical shock.
l ) Position the cord clear of the spinning accessory. If you
lose control, the cord may be cut or snagged and your hand or
arm may be pulled into the spinning accessory.
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 ) 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.
o ) 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.
p ) Do not operate the power tool near flammable
materials. Sparks could ignite these materials.
q ) Do not use accessories that require liquid coolants. Using
water or other liquid coolants may result in electrocution or shock.
FURTHER SAFETY INSTRUCTIONS FOR
ALL OPERATIONS
Kickback and Related Warnings
Kickback is a sudden reaction to a pinched or snagged rotating
wheel, backing pad, 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 at the point of
the binding.
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 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 with both hands on the power tool
and position your body and arms to allow you to resist
kickback forces. Always use auxiliary handle, if provided, for
maximum control over kickback or torque reaction during
start up. The operator can control torque reaction or kickback
forces, if proper precautions are taken.
b ) Never place your hand near the rotating accessory.
Accessory may kickback over your hand.
c ) Do not position your body in the area where 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.
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,
segmented diamond wheel with a peripheral gap greater
than 10 mm or toothed saw blade. Such blades create frequent
kickback and loss of control.
38
Safety Warnings Specific for Grinding and Cutting-
Off Operations
a ) Use only wheel types that are recommended 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 centre 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 the operator from broken wheel fragments, accidental
contact with wheel and sparks that could ignite clothing.
d ) Wheels must be used only for specified 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. A
wheel intended for larger power tool is not suitable for the higher
speed of a smaller tool and may burst.
g ) When using dual purpose wheels always use the correct
guard for the application being performed. Failure to use the
correct guard may not provide the desired level of guarding, which
could lead to serious injury.
Additional Safety Warnings Specific for Cutting-Off
Operations
a ) Do not "jam" the 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 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 operations, 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 re-enter 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.