Narex EBU 15-16, Original Operating Manual

Page: 13 / 36

English
13
Additional safety instructions for 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 susceptibil-
ity 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 rea-
son, switch off the power tool and hold the power tool motion-
less until the wheel comes to a complete stop. Never attempt to
remove the cut-off wheel from the cut while the wheel is in mo-
tion otherwise kick-back may occur. Investigate and take corrective
action to eliminate the cause of wheel binding.
d) Do not restart the cutting operation in the workpiece. Let the
wheel reach full speed and carefully reenter 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 kick-back.
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)
Take extra caution when making a “pocket cut” into existing
walls or other blind areas.
The protruding wheel may cut gas or wa-
ter pipes, electrical wiring or objects that can cause kickback.
Safety Warnings Specific for Sanding Operations:
a) Do not use excessively oversized sanding disc paper. Follow
manufacturers recommendations when selecting sanding
paper. Larger sanding paper extending beyond the sanding pad
presents a laceration hazard and may cause snagging, tearing of the
disc or kickback.
Safety Warnings Specific for Wire Brushing
Operations:
a) Be aware that wire bristles are thrown by the brush even
during ordinary operation. Do not overstress the wires by
applying excessive load to the brush. The wire bristles can easily
penetrate light clothing and/or skin.
b) If the use of a guard is recommended for wire brushing, do
not allow any interference of the wire wheel or brush with the
guard. Wire wheel or brush may expand in diameter due to work load
and centrifugal forces.
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 cloth-
ing, 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 kick-
back 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. Kick-back 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.
Safety warnings specific for grinding and
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) Use only the specific guard designed for the selected wheel. The
guard must be securely attached to the power tool and posi-
tioned for maximum safety, so the least amount of wheel is ex-
posed towards the operator. The guard helps to protect the operator
from broken wheel fragments and accidental contact with the wheel.
c)
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.
d)
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.
e) 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.