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5.1
Safety instructions for cut-off
machines
a) The protective cover belonging to the electric tool
must be securely attached and adjusted so that
the highest degree of safety is achieved, i.e. the
smallest possible part of the grinding wheel is re-
vealed to the operator. Keep yourself and people
nearby out of the plane of the rotating grinding
disc. The protective cover is intended to protect the
operator from fragments and accidental contact with
the grinding wheel.
b) Only use diamond-coated cutting discs for your
power tool. Just because you can attach the acces-
sories to your electrical appliance does not guarantee
safe use.
c) The maximum speed of the accessory tool used
must be at least as high as the maximum speed
specified for the power tool. Accessories which ro-
tate faster than the maximum permissible rate can
break and throw pieces into the air.
d) Grinding bodies may only be used for the recom-
mended applications. For example: Never grind on
the side surfaces of a cutting wheel. Cutting wheels
are designed to remove material with the edge of the
disc. Lateral forces on this grinding body can break it.
e) Always use undamaged clamping flanges of the
correct size and shape for the grinding disc select-
ed by you. Suitable flanges support the grinding disc
and reduce the danger of the grinding disc breaking.
f) The external diameter and thickness of the acces-
sory tool used must comply with the dimensions
of the power tool. Incorrectly dimensioned accessory
tools cannot be sufficiently shielded or controlled.
g) Grinding discs and flanges must fit exactly on
your electrical tool's grinding spindle. Insertion
tools that do not fit exactly on your electrical tool's
grinding spindle rotate unevenly, vibrate very strongly
and can cause a loss of control.
h) Do not use damaged grinding discs. Check the
grinding discs for chipping and cracks before
each use. If the electric tool or grinding disc falls,
check whether it is damaged, or use an undam-
aged grinding disc. Once you have checked and
inserted the grinding disc, keep yourself and any-
one in the vicinity out of the plane of the rotating
grinding disc and allow the appliance to run at
maximum speed for one minute. Damaged grinding
discs usually break during this test period.
i)
Wear personal protective equipment. Depending on
application, use face shield, safety goggles or safe-
ty glasses. Where appropriate, wear a dust mask,
hearing protection, protective gloves or a special
apron that will keep small grinding and material
particles away from you. The eye protection must be
capable of stopping flying debris generated by various
operations. Dust or breathing masks must filter the dust
generated during use. Prolonged exposure to high in-
tensity noise may cause hearing loss.
j)
Ensure that other people remain at a safe distance
from your workspace. Anyone who enters the
workspace must wear personal protective equip-
ment. Fragments of the workpiece or broken accesso-
ry tools can fly off and cause injury – even outside the
immediate working area.
k) Hold power tool by insulated gripping surfaces
only, when performing an operation where the cut-
ting accessory may contact hidden wiring or its
own cord. Contact with a live wire may make ex-
posed metal parts of the power tool live and could
give the operator an electric shock.
l)
Keep the power cord away from any rotating ac-
cessories. If you lose control of the device, the mains
cable can be severed or caught and your hand or arm
pulled into the rotating insert tool.
m) Never put the power tool down until the accessory
tool being used has come to a complete standstill.
The rotating accessory tool can come into contact with
the surface and cause you to lose control of the power
tool.
n) Do not run the power tool while carrying it at your
side. Accidental contact of your clothing with the rotat-
ing attachment part could lead to an injury.
o) Clean the ventilation slits of your power tool regu-
larly. The engine fan draws dust into the housing and
a strong accumulation of metal dust can cause electri-
cal hazards.
p) Never use the power tool in the vicinity of inflam-
mable materials. Sparks can ignite such materials.
q) Do not use any accessory tools which require liq-
uid coolant. The use of water or other liquid coolants
may lead to an electric shock.
5.2
Kick-back and corresponding
safety instructions
Kick-back is the sudden reaction resulting from a caught
or jammed rotating insert tool, such as a grinding disc,
grinding wheel, etc. Catching or jamming results in the ro-
tating insert tool stopping abruptly. As a result, an uncon-
trolled electric tool is accelerated against the direction of
rotation of the tool attachment at the blocking point.
For example, if a grinding disc catches or jams in the
workpiece, the edge of the grinding disc that plunges into
the workpiece can get caught, causing the grinding disc to
break away or kick back. The grinding disc may either
jump toward or away from the operator, depending on di-
rection of the wheel's movement at the point of pinching.
Abrasive wheels may also break under these conditions.
Kickback is the result of incorrect or deficient use of the
power tool. It can be prevented by suitable precautionary
measures, as described in the following.
a) Hold the power tool firmly in both hands and posi-
tion your body and arms so they can absorb the
force of a kickback. Always use the additional
handle, if available, so that you have the maximum
possible control over the kickback force or reac-
tion forces at full speed. By taking adequate precau-
tions, the operator can stay in control of the kickback
and reaction forces.
b) Never hold your hand close to a rotating accesso-
ry tool. The accessory tool could jump out of your
hand if there is a kickback.
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