attached to the power tool and positioned for maximum
safety, so the least amount of wheel is exposed towards the
operator. Position yourself and bystanders away from the
plane of the rotating wheel.
The guard helps to protect
operator from broken wheel fragments and accidental contact
with wheel.
b) Use only bonded reinforced cut-off wheels for your power
tool.
Just because an accessory can be attached to your power
tool, it does not assure safe operation.
c) The rated speed of the accessory must be at least equal
to the maximum speed marked on the power tool
.
Accessories running faster than their rated speed can break and
fly apart.
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
diameter for your selected wheel.
Proper wheel flanges
support the wheel thus reducing the possibility of wheel
breakage.
f) Do not use worn down reinforced wheels from larger
power tools.
Wheels intended for a larger power tool are not
suitable for the higher speed of a smaller tool and may burst.
g) The outside diameter and the thickness of your
accessory must be within the capacity rating of your power
tool.
Incorrectly sized accessories cannot be adequately
guarded or controlled.
h) The arbour size of wheels and flanges must properly fit
the spindle of the power tool.
Wheels and flanges with arbour
holes that do not match the mounting hardware of the power tool
will run out of balance, vibrate excessively and may cause loss
of control.
i) Do not use damaged wheels. Before each use, inspect the
wheels for chips and cracks. If power tool or wheel is
dropped, inspect for damage or install an undamaged
wheel.
After inspecting and installing the wheel, position yourself
and bystanders away from the plane of the rotating wheel and
run the power tool at maximum no load speed for one minute.
Damaged wheels will normally break apart during this test time.
Cutting accessory contacting a "live" wire may make
exposed metal parts of the power tool "live" and could give
the operator an electric shock.
m) 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.
n) Never lay the power tool down until the accessory
has come to a complete stop.
The spinning wheel may
grab the surface and pull the power tool out of your control.
o) 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.
p) 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.
q) Do not operate the power tool near flammable
materials.
Sparks could ignite these materials.
r) Do not use accessories that require liquid coolants.
Using water or other liquid coolants may result in
electrocution or shock.
Kickback is a sudden reaction to a pinched or snagged
rotating wheel. Pinching or snagging causes rapid stalling
of the rotating wheel which in turn causes the uncontrolled
power tool to be forced in the direction opposite of the
wheel’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 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 line with the rotating wheel.
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.
f) Do not “jam” the wheel or apply excessive pressure. Do
not attempt to make an excessive depth of cut.
Overstressing
g) 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 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.
h) 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.
i) 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.
j) Use extra caut
ion when making a “pocket cut” into
