Berner BACAG-1 BL 18V 01 Manual Original página 25

fl ange. 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 accessory such as abrasive wheels for chips and cracks,
backing pad for cracks, tear or excess wear, 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 appli-
cation, use face shield, safety goggles or safety glasses. As
appropriate, wear dust mask, hearing protectors, gloves and
workshop apron capable of stopping small abrasive or workpie-
ce fragments. The eye protection must be capable of stopping fl ying
debris generated by various operations. The dust mask or respirator
must be capable of fi ltrating 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
fl y 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. Acci-
dental 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 fl ammable 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.
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 ope-
rator, 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 fi rm grip on the power tool and position your body
and arm to allow you to resist kickback forces. Always use auxi-
liary 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.
457 728 - Berner-BACAG-1 BL 18V.indd 25 457 728 - Berner-BACAG-1 BL 18V.indd 25
e) Do not attach a saw chain woodcarving blade or toothed saw
blade. Such blades create frequent kickback and loss of control.
Safety Warnings Specifi c for Grinding and Abrasive Cutting-Off
Operations:
a) Use only wheel types that are recommended for your power
tool and the specifi c guard designed for the selected wheel.
Wheels for which the power tool was not designed cannot be ade-
quately 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 cut-off wheel. Abra-
sive cut-off wheels are intended for peripheral grinding, side forces
applied to these wheels may cause them to shatter.
e) Always use undamaged wheel fl anges that are of correct size
and shape for your selected wheel. Proper wheel fl anges support
the wheel thus reducing the possibility of wheel breakage. Flanges
for cut-off wheels may be diff erent from grinding wheel fl anges.
f) Do not use worn down wheels from larger power tools. Wheel
intended for larger power tool is not suitable for the higher speed of a
smaller tool and may burst.
Additional Safety Warnings Specifi c 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. Overstres-
sing 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 moti-
onless 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. 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.
e) 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.
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.
Safety Warnings Specifi c 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 Specifi c 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.
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