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i)
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 accessory may fly away
and cause injury beyond immediate area of
operation.
j)
Hold the power tool by insulated gripping
surfaces only, when performing an operation
where the cutting accessory may contact
hidden wiring.
Cutting accessory contacting a
"live" wire may make exposed metal parts of the
power tool "live" and could give the operator an
electric shock.
k)
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.
l)
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.
m)
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.
n)
Do not operate the power tool near
flammable materials.
Sparks could ignite these
materials.
o)
Do not use accessories that require liquid
coolants.
Using water or other liquid coolants may
result in electrocution or shock.
3.2 Kickback and Related Warnings
Kickback is a sudden reaction to a pinched or
snagged grinding wheel, backing pad, brush or any
other accessory. Pinching or snagging causes rapid
stalling of the rotating accessory. This in turn
causes the uncontrolled power tool to be forced in
the opposite direction from which the accessory is
rotating at the pinched or snagged point.
For example, if an abrasive wheel is snagged or
pinched by the workpiece, the edge of the wheel
entering the pinch point can dig into the surface of
the material causing the wheel to climb out or kick
out. The abrasive wheel may either jump toward or
away from the operator, depending on direction the
disc is moving at the pinch point. 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. Always use auxiliary
handle, if provided, for maximum control over
kickback or torque reaction during start-up.
The operator can control torque reactions 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 or toothed saw blade
.
Such blades create
frequent kickback and loss of control
.
3.3 Safety Warnings Specific for Grinding
and Abrasive Cut-Off Grinding:
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 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 tools
is not suitable for the higher speed of a smaller tool
and may burst.
3.4 Additional Safety Warnings Specific for
Abrasive 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 usceptibility 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
