Scheppach DS930 Traduction Des Instructions D'origine page 21

d.) The permissible rotational speed of the ac-
cessory must be at least as high as the maxi-
mum speed specified on the machine. Acces-
sories that rotate faster than the permissible level
can rupture.
e.) The outside diameter and the thickness of ac-
cessories must be within the specified size
range of the machine. Accessories with incor-
rect dimensions cannot be sufficiently protected
or controlled.
f.) Threaded mounting of accessories must
match the grinder spindle thread. For acces-
sories mounted by flanges, the arbour hole of
the accessory must fit the locating diameter
of the flange. 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 damaged accessories. Before use,
always check accessories such as sanding
pads for nicks or cracks and check support
plates for cracks and excessive wear. Every
time the machine is dropped, check the ma-
chine and accessories for damage, or install
undamaged accessories. Following the check
and assembly of accessories, ensure that all
persons are beyond the rotating range of the
tool and run the machine for one minute at
maximum speed. Damage accessories usually
break completely during this test time.
h.) Wear personal protective equipment. De-
pending on the application, use a shield or
protective goggles. If practical, wear a breath-
ing mask, ear protectors, safety gloves and a
work apron suitable to protect against impact
or small sanding or workpiece parts. The pro-
tective goggles must be capable of blocking fly-
ing debris caused by the various work operations.
The breathing mask or device must be capable
of fi ltering particles generated during work. Con-
tinuous exposure to loud noise can cause loss of
hearing.
i.) Ensure that persons standing near the ma-
chine are at a safe distance from the work
area. All persons in the work area must wear
personal protective equipment. Parts of the
workpiece or broken accessories can fly off and
cause injury outside the immediate work area.
j.) Always hold the machine by the insulated han-
dles if you intend to perform work that may
pose a risk of cutting into hidden power ca-
bles or your own machine cable. Contact with
live cables transfers an electric current to metallic
machine components and causes electric shocks.
k.) Keep the power cable away from rotating
parts. If you lose control, the power cable could
be cut or become stuck and your hand or arm
could be drawn into the rotating parts.
 www.scheppach.com /  service@scheppach.com /  +(49)-08223-4002-99 /  +(49)-08223-4002-58
l.) Never set the machine down until the tool has
stopped completely. Turning tools can catch on
the storage surface, causing you to lose control of
the machine.
m.) Never allow the machine to operate while car-
rying it at your side. The rotating tool can catch
on your clothing by accident and cause serious
cutting injuries.
n.) Clean the air vent slits on your machine on a
regular basis. The cooling air fan sucks the dust
into the machine and excessive deposits of metal
dust can result in electrical hazards.
o.) Never operate the machine near combustible
materials. Sparks can ignite these materials.
p.) Never use tools that have to be liquid-cooled.
Water and other liquid coolants can cause poten-
tially fatal electric shocks.
Cause and prevention of kickbacks
A kickback is a sudden reaction to jamming or catch-
ing of a rotating disc, a support plate, a brush or
other accessory. Jamming or catching results in a
rapid standstill of the rotating accessory, whereby, as
a counter-reaction, an out-of-control machine is ac-
celerated around the jamming point in a direction of
rotation opposed to the accessory. If, for example, a
sanding disc is jammed or caught by the workpiece,
the disc circumference can dig into the workpiece
surface at the jamming point, causing the disc to
be expelled. The disc can either fly towards or away
from the user, depending on the direction of rotation
of the disc at the jamming point. This can also cause
sanding discs to break. A kickback is the result of
misuse of the machine and/or incorrect method of
work or operation and can be avoided by closely ob-
serving the following precautionary measures.
a.) Always hold the machine firmly and position
your body and arms such that you can con-
trol any kickback force. Always use the auxiliary
handle, if included in the delivery, to ensure opti-
mum control over kickbacks or reaction torques
during start-up. The user can control reaction tor-
ques or kickbacks if suitable precautionary meas-
ures are taken.
b.) Never place your hands near rotating tools.
Tools can kick back over your hand.
c.) Never position your body in the area in which
the machine moves in the event of a kickback.
A kickback accelerates the machine in the direc-
tion of rotation opposed to the disc at the jamming
point.
d.) Take extra care when working in corners, on
sharp edges, etc. Avoid kickbacks and prevent
the tool from seizing. Corners, sharp edges or a
jump back tend to cause the rotating tool to catch,
thus leading to a loss of control or a kickback.
GB | 21