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f)
Threaded mounting of accessories must match the grinder spindle thread. For accessories
mounted by flanges, the arbour hole of the accessory must fit the locating diameter of the
flange. Accessories that do not match the mounting hardware of the power tool will run out of
balance, vibrate excessively and may cause loss of control.
g)
Do not use a damaged accessory. Before each use inspect the accessories such as
abrasive wheels for chips and cracks, backing pads for cracks, tear or excess wear, wire
brushes for loose or cracked wires. If power tool or accessory is dropped, inspect for
damage or install an undamaged accessory. After inspecting and installing an accessory,
position yourself and bystanders away from the plane of the rotating accessory and run the
power tool at maximum no-load speed for one minute. Damaged accessories will normally
break apart during this test time.
h)
Wear personal protective equipment. Depending on the application, use face shield, safety
goggles or safety glasses. As appropriate, wear a dust mask, hearing protectors, gloves
and a workshop apron capable of stop-ping 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 filtering particles generated by your operation. Prolonged
exposure to high intensity noise may cause hearing loss.
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 or its own cord. Cutting accessory
contacting a "live" wire may make exposed metal parts of the power tool "live" and shock the
operator.
k)
Position the cord clear of the spinning accessory. If you lose control of the power tool, the cord
may be cut or snagged and your hand or arm may be pulled into the spinning accessory.
l)
Never lay the power tool down until the accessory has come to a complete stop. The
spinning accessory may catch the surface and pull the power tool out of your control.
m)
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.
n)
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.
o)
Do not operate the power tool near flammable materials. Sparks could ignite these materials.
p)
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, 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 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 an auxiliary handle, if provided, for maximum control over
kickback or torque reaction during start-up. The operator can control torque reactions or kick-
back 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)
Take 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.
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