Product Description And Specifications - Berner BWC 35 Manual Original

OBJ_BUCH-1829-002.book Page 17 Friday, October 9, 2015 12:03 PM
Kickback and related warnings
 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 ro-
tation 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 condi-
tions and can be avoided by taking proper pre-
cautions as given below.
 Maintain a firm grip on the power tool and po-
sition your body and arm to allow you to resist
kickback forces. Always use 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.
 Never place your hand near the rotating acces-
sory. Accessory may kickback over your hand.
 Do not position your body in line with the rotat-
ing wheel. Kickback will propel the tool in direc-
tion opposite to the wheel's movement at the
point of snagging.
 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.
 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.
 Do not "jam" the wheel or apply excessive
pressure. Do not attempt to make an exces-
sive depth of cut. Overstressing the wheel in-
creases the loading and susceptibility to twisting
or binding of the wheel in the cut and the possi-
bility of kickback or wheel breakage.
 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 at-
tempt 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.
1 609 92A 1D0 • 9.10.15
 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.
 Support panels or any oversized workpiece to
minimize 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.
 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 kick-
back.
Additional safety warnings
Wear safety goggles.
 Use clamps or another practical way to secure
and support the workpiece to a stable plat-
form. Holding the work by your hand or against
the body leaves it unstable and may lead to loss
of control.
 Wear hearing protection, safety goggles, dust
mask and gloves. As dust mask, use at least a
particle filtering half mask of filter class FFP 2.
 Use suitable detectors to determine if utility
lines are hidden in the work area or call the lo-
cal utility company for assistance. Contact with
electric lines can lead to fire and electric shock.
Damaging a gas line can lead to explosion. Pen-
etrating a water line causes property damage or
may cause an electric shock.
 Do not touch the cutting disc after working be-
fore it has cooled. The cutting disc becomes
very hot while working.
 When working with the machine, always hold
it firmly with both hands and provide for a se-
cure stance. The power tool is guided more se-
cure with both hands.
Product Description and
Specifications
Read all safety warnings and all in-
structions. Failure to follow the warn-
ings and instructions may result in
electric shock, fire and/or serious inju-
ry.
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