VERTO 52G105, Instruction Manual

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of the grinding wheel in a place, where it is locked. The grinding
wheels may also break.
Recoil is a consequence of incorrect operation of the power tool.
This can be avoided by observing the following precautions.
• The power tool must be held firmly, while your body and hands
should be positioned to alleviate recoil. If the additional handle
is included as standard equipment, it should be used at all times
to provide the highest control over recoil forces or rejecting
moment during start-up.
An operator can take control of recoil and
jerking by taking proper precautions.
• Never hold your hands in the vicinity of rotating working tools.
A working tool may injure your hand as a result of recoil.
• Always stay away from the reach zone, in which the power tool
moves during recoil. As a result of recoil, the power tool moves in
the opposite direction to the movement of the grinding wheel, where
it locks.
• Corners, sharp edges, etc. should be worked with special attention.
Recoil or locking of the working tools should be prevented.
A rotating working tool is more prone to seizure, when working angles,
corners, sharp edges or when it is rebound. This may result in loss of
control or recoil.
• Do not use discs for wood or toothed discs. Working tools of this
type often cause recoil or loss of control over the working tool.
Special safety guidelines for grinding and cutting with the
grinding wheel.
• Always use the grinding wheel intended for a given power
tool and guard intended for a given grinding wheel. Grinding
wheel that are not part of equipment of a given power tool may be
insufficiently covered or safe.
• Offset grinding wheels should be fastened so that their
grinding surface does not protrude beyond the protective
guard.
Incorrectly seated grinding wheel and protruding beyond the
edge of the protective guard may not be sufficiently covered.
• The guard must be secured to the power tool to ensure the
highest possible safety level and positioned so that the
uncovered part of the grinding wheel facing the operator is
as small as possible.
The guard protects the operator against chips,
accidental contact with the grinding wheel and sparks, which may set
clothing on fire.
• Grinding wheels can only be used according to its purpose.
• The side surface of the grinding wheel should not be used for
cutting. Cut-off grinding wheels are designed for removal of material
with the disc edge. The influence of lateral forces on the grinding
wheels may break them.
• Undamaged fastening flanges of a correct size and shape
should always be used for a selected grinding wheel. Proper
flanges support the grinding wheel and reduce the risk of its breaking.
Flanges for cut-off wheels may differ from flanges designed for other
grinding wheels.
• Do not use worn grinding wheels from larger power tools.
Grinding wheels for larger power tools are not designed for higher
rotational speed, which is specific to smaller power tools. Thus, such
grinding wheels may break.
Additional specific safety guidelines for cutting with a cut-off
wheel
• Always prevent a cut-off wheel from seizure and avoid excessive
pressure. Do not make too deep cuts. The overload of a cut-off
wheel increases its load and tendency for seizure or locking, and thus
may result in recoil or breaking of a cut-off wheel.
• Avoid areas in front of and behind a rotating cut-off wheel.
When a cut-off wheel is moved onto a workpiece away from the
operator, it may cause the power tool to kick back as a result of recoil,
with a rotating cut-off wheel pointing directly towards the operator.
• When a cut-off wheel seizes or you take a break from work,
switch off the power tool and wait until it comes to a complete
stop. Do not attempt to remove a rotating cut-off wheel from a
cutting place, since it may cause recoil.
Find and eliminate a cause
of seizure.
• Do not switch the power tool back on, if it is still sunk in a
workpiece. Before you continue to cut, a cut-off wheel must
reach its full rotational speed.
Otherwise, a cut-off wheel may catch, spring back from a workpiece
and cause recoil.
• Boards and large objects should be supported to reduce the
risk of recoil caused by a seized cut-off wheel. Large objects may
bend under their own weight. A workpiece should be supported from
both sides, both near the cut line and its edge.
• Special caution should be exercised, when holes are cut in a
wall or in confined spaces. As a cut-off wheel sinks into a workpiece,
it may cause the power tool to recoil, when it encounters a gas or water
supply line, power conductors or other objects.
Specific safety guidelines for sanding with sandpaper
• Do not use too large sheets of sandpaper. Always follow
guidelines of a manufacturer, when the size of a sandpaper is
selected.
Sandpaper protruding beyond a grinding disc may cause
injuries and result in locking and tearing of sandpaper, or recoil.
Specific safety guidelines for working with wire brushes
• It should always be remembered that pieces of wire are lost
even during normal use. Do not overload wires by putting
excessive pressure.
Airborne pieces of wire may easily puncture thin
clothing and/or skin.
• If a guard is recommended to be used, prevent a brush from
touching the guard. A brush diameter for plates and pots may
increase due to the pressure and centrifugal forces.
Additional safety guidelines
• Before connecting to the power source, always make sure the
supply voltage is compatible with the value specified on the
nameplate of the tool.
• Before the grinder is connected, always check the power cord.
In case of damage, have it repaired in an authorised workshop.
• Before all installation works, the plug should be taken out of
the receptacle.
• Grinding tools should be checked before each use. A grinding
tool must be correctly fastened and should rotate freely. As
part of the test, the tool should be switched on with no load
for at least one minute in a safe position. Do not use damaged
or vibrating grinding tools. Grinding tools should be round.
Damaged grinding tools may break and cause injuries.
• Once a grinding tool is installed and before the grinder is
switched on, check the grinding tool for correct installation
and free rotations, and whether it does not catch the guard.
• The spindle lock button can be activated, only when the
grinder spindle does not move.
• In case of tools adapted for fastening of grinding wheels with
a threaded opening, make sure the grinding wheel thread
length is suitable for the spindle thread length.
• Always secure the workpiece. It is always preferable to secure
the workpiece in a vice or other fastening tool than holding it
in your hand.
• If own weight of the workpiece does not guarantee a stable
position, it should be fastened.
• Do not touch cut-off and grinding wheels, before they cool
down.
• Do not exert lateral pressure on the grinding or cut-off wheel.
Do not cut a workpiece of a thickness larger than the
maximum cutting depth of the cut-off wheel.
• When quick release flange is used, make sure that inner flange
seated on the spindle is equipped with rubber O-ring and this
ring is not damaged. Also surfaces of the outer flange and the
inner flange must be clean.
• Use quick release flange only with cutting and grinding discs.
Use only flanges that are free from defects, that operate
correctly.
• In case of temporary mains power failure or after
disconnecting plug from mains socket with the switch in ON
position, unlock the switch and set it to OFF position before
starting the tool again.
NOTE: The tools is intended for indoor works.
Despite using the construction, which is safe by design itself,
protection means and additional safety features, there is always a
residual risk of injuries during operation.