Kickback And Related Warnings - DeWalt D28730 Manual

speed for one minute. Damaged wheels will normally
break apart during this test time.
i ) Wear personal protective equipment. Depending
on application, use face shield, safety goggles or
safety glasses. As appropriate, wear a dust mask,
hearing protectors, gloves and shop apron capable
of stopping small abrasive or workpiece fragments.
The eye protection must be capable of stopping flying
debris generated by various operations. The dust mask or
respirator must be capable of filtrating particles generated
by your operation. Prolonged exposure to high intensity
noise may cause hearing loss.
j ) Keep bystanders a safe distance away from work
area. Anyone entering the work area must wear
personal protective equipment. Fragments of
workpiece or of a broken wheel may fly away and cause
injury beyond immediate area of operation.
k ) 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 wheel.
l ) Regularly clean the power tool's air vents. The
motor's fan can draw the dust inside the housing and
excessive accumulation of powdered metal may cause
electrical hazards.
m ) Do not operate the power tool near flammable
materials. Do not operate the power tool while
placed on a combustible surface such as wood.
Sparks could ignite these materials.
n ) 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. Pinching orsnagging causes rapid stalling of the rotating
wheel which in turn causes the uncontrolled cutting unit to be
forced upwards toward the operator.
For example, if an abrasive wheel is snagged or pinched by the
workpiece, the edge of thewheel that is entering into the pinch
point can dig into the surface of the material causingthe wheel
to climb out or kick out. Abrasive wheels may also break under
these conditions.
Kickback is the result of power tool misuse and/or incorrect
operating procedures orconditions 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 upward kickback forces,
if proper precautions are taken.
b ) Do not position your body in line with the rotating
wheel. If kickback occurs, it will propel the cutting unit
upwards toward the operator.
c ) 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.
d ) Do not "jam" the 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.
e ) When the wheel is binding or when interrupting a
cut for any reason, switch off the power tool and
hold the cutting unit motionless until the wheel
comes to a complete stop. Never attempt to remove
the 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.
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 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.
Additional Safety Warnings for Chop Saws
• In operation, avoid bouncing the cutting disc or giving it
rough treatment. If this occurs, stop the tool and inspect the
cutting disc.
• Do not operate the tool while standing in line with the cutting
disc. Keep other persons away from the work area.
• Be aware of cutting chips and the material being cut.
They may be sharp and hot. Allow cut off parts to cool
before handling.
• The spark deflector becomes hot during use. Avoid touching or
adjusting the spark deflect or immediately after operation.
• Switch off the tool and wait for the cutting disc to stop before
moving the workpiece or changing the settings.
• After switching off, never attempt to stop the cutting disc by
pressing against the side of the disc.
• Do not use cutting fluids. These fluids could ignite or cause
electrical shock.
• Check that the workpiece is properly supported.
• Use the cutting discs recommended by the manufacturer only.
Do not use tools for purposes not intended; for example do not
use circular saw blade to cut tree limbs or logs.
• The max. allowable speed of the cutting disc must always be
equal to or greater than the no-load speed of the tool specified
on the nameplate.
• Do not use cutting discs that do not conform to the
dimensions stated in the Technical Data.
• Read the operating instructions supplied by the
wheel manufacturer.
• Ensure that the abrasive wheel is correctly fitted and tightened
before use.
• Let the tool run at no-load in a safe position for at least
30 seconds. If there is a considerable vibration or if any
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