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e) Maintain power tools. Check for misalignment or binding of moving parts, breakage
of parts and any other condition that may affect the power tool’s operation. If
damaged, have the power tool repaired before use. Many accidents are caused by
poorly maintained power tools.
f) Keep cutting tools sharp and clean. Properly maintained cutting tools with sharp cutting
edges are less likely to bind and are easier to control.
g) Use the power tool, accessories and tool bits etc. in accordance with these
instructions, taking into account the working conditions and the work to be
performed. Use of the power tool for operations different from those intended could result
in a hazardous situation.
5) Battery tool use and care
a) Recharge only with the charger specified by the manufacturer. A charger that is
suitable for one type of battery pack may create a risk of fire when used with another
battery pack.
b) Use power tools only with specifically designated battery packs. Use of any other
battery packs may create a risk of injury and fire.
c) When battery pack is not in use, keep it away from other metal objects, like paper
clips, coins, keys, nails, screws or other small metal objects that can make a
connection from one terminal to another. Shorting the battery terminals together may
cause burns or a fire.
d) Under abusive conditions, liquid may be ejected from the battery; avoid contact. If
contact occurs, flush with water. If liquid contacts eyes, additionally seek medical
help. Liquid ejected from the battery may cause irritation or burns.
6) Service
a) Have your power tool serviced by a qualified repair person using only identical
replacement parts. This will ensure that the safety of the power tool is maintained.
Grinding Tool Safety
Safety warnings common for grinding, sanding, wire
brushing, polishing or abrasive cutting-off operations
a) This power tool is intended to function as a grinder, sander, wire brush or cut-off
tool. Read all safety warnings, instructions, illustrations and specifications provided
with the power tool. Failure to follow all instructions listed below may result in electric
shock, fire and/or serious injury.
b) Operations such as polishing are not recommended to be performed with this power
tool. Operations for which the power tool was not designed may create a hazard and
cause personal injury.
c) Do not use accessories which are not specifically designed and recommended by
the tool manufacturer. Just because the accessory can be attached to your power tool it
does not assure safe operation.
d) 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.
e) 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.
f) The arbour size of wheels, flanges, backing pads or any other accessory must
properly fit on the spindle of your power tool. Accessories 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.
g) Do not use a damaged accessory. Before each use inspect the accessory such as
abrasive wheels for chips and cracks, backing pad for cracks, tear or excess wear,
wire brush, wire, wire brush 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 application, use faceshield,
safety goggles or safety glasses. As appropriate, wear dust mask, hearing
protectors, gloves and workshop apron capable of stopping small abrasive or
workpiece fragments. 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.
i) Keep bystanders a safe distance away from the 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 contact a ‘live’ wire may make exposed metal parts of the power tool
‘live’ and could give the operator an electric shock.
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 accessory.
l) 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.
m) Do not run the power tool while carrying it to your side. Accidental contact with the
spinning accessory may snag clothing, pulling the accessory towards your body.
n) Regularly clean the power tool’s 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 towards 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 an 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 the 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.
Safety Warnings Specific for Grinding and Abrasive
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 the 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 the 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. Wheels intended for larger
power tools are not suitable for the higher speed of a smaller tool and may burst.
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
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 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 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. Allow the wheel to 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 minimise 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.
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