Working safely with cut-off machines
English
13
Cut-off machines are designed for use
with abrasive wheels in good condition
only. Machines designed for use with
wood-cutting or other toothed blades
use different types of guarding systems
that provide the protection necessary for
those types of blades. Machines, such
as a cut-off machine, that are designed
for use with abrasive wheels require a
different guarding system, which is not
designed to provide protection against
all dangers presented by circular saw
blades, carbide-tipped blades, rescue
blades or wood-cutting or toothed
blades of any nature.
1.
Hold the cut-off machine firmly with
both hands.
2.
Maintain good balance and footing
at all times. Never cut while
standing on a ladder.
3.
Position the cut-off machine in such
a way that your body is clear of the
cutting attachment. Avoid standing
in direct line with the wheel. Never
bend over the cutting attachment,
especially when the guard is pulled
back towards the top and there is a
risk of reactive forces. (See
illustration.)
4.
Do not cut above shoulder height.
5.
Use only STIHL-branded diamond
and composite abrasive wheels.
Never work with a diamond wheel
that wobbles or that has ever
wobbled or that is manufactured
with abrasive material on its sides.
6.
Do not cut wood or any other
material for which the abrasive
wheel is not authorized.
7.
Never use circular saw blades,
carbide-tipped blades, rescue
blades, wood-cutting blades or
toothed blades of any nature. Their
use increases the risk of injury from
blade contact, thrown tips and
reactive forces, including kickback.
8.
Begin cutting and continue at full
throttle.
9.
Do not overreach.
10.
Never sideload a wheel in the kerf.
11.
Use your cut-off machine for cutting
only. It is not designed for prying or
shoveling away any objects.
12.
Be especially alert for reactive
forces, including kickback, when
cutting with the front and upper
quadrant of the wheel. Never pull
the top of the wheel guard back
beyond the limit stop.
13.
Be alert to shifting of the workpiece
or anything that could cause the cut
to close and pinch the wheel,
especially in the upper quadrant.
Support the workpiece in such a
way that the cut remains open.
Never make a cut that results in a
binding of the wheel.
14.
Use wet-cutting whenever feasible.
In a pinch situation the water can act
as a lubricant and reduce the
energy of reactive forces.
15.
Release the pressure on the cut-off
machine as you reach the end of the
cut. Too much pressure may cause
the operator to lose control of the
cut-off machine when the abrasive
wheel completes the cut. The
abrasive wheel may contact the
operator or strike some foreign
object and shatter.
16.
Use extreme caution when
reentering a cut and do not turn the
wheel at an angle or push the wheel
into the cut as this may result in a
binding of the wheel.
Gyroscopic Forces
Be alert for gyroscopic forces that are
caused by the rapid spinning of the cut-
off wheel. These forces result in
Warning!
Never use chipped abrasive wheels or
circular saw blades, carbide-tipped
blades, rescue blades or wood-cutting
or toothed blades of any nature on a cut-
off machine. The use of such wheels or
blades will greatly increase the risk of
loss of control and severe personal
injury or death from reactive forces,
since the chipped section of an abrasive
wheel or the teeth of a saw blade may
catch in the material being cut and gen-
erate substantially greater reactive
forces, including rotational kickback.
Warning!
To reduce the risk of injury from loss of
control from reactive forces, including
kickback:
002BA059 KN
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