Scheppach PLC40 Original Bedienungsanleitung Seite 28

ATTENTION! This device does not
comply with the IEC 61000-3-12 stand-
ard. It is intended to be connected to
private low voltage networks that are
connected to public electricity networks of medium
and high voltage. When operating the device on the
public low-voltage network, the operator of the device
must consult the local electric power company whether
the device is suitable for operation.
If you want to use the device in residential sites in
which the power supply comes from a public low-volt-
age supply system, it may be necessary to use an
electromagnetic filter that reduces electromagnetic in-
terference so that radio and television reception is not
disturbed.
As a user, you must ensure that the connection point at
which you want to operate the device meets the stat-
ed requirement. It may be necessary to consult your
local electric power company. The operator of the de-
vice is responsible for malfunctions caused by weld-
ing or cutting.
The device can be used in industrial areas or other
areas in which the power supply is not provided by a
public low-voltage supply system.
Electromagnetic fields and interferences
The electric currents flowing through a conductor
cause electrical and magnetic fields (EMF).
Electromagnetic interference can occur when operat-
ing arc welding systems.
Exposure to electromagnetic fields while welding may
have other health effects which are not yet known.
People with cardiac pacemakers or hearing aids are
advised to consult their doctor before using this de-
vice. For example, access restrictions for passers-by
or an individual risk evaluation for the welders. All
welders should take the following precautions in or-
der to minimise exposure to the electromagnetic fields
(EMF) generated by the welding circuit:
keep your head and torso as far as possible from the
welding circuit;
• bundle the electrode holder and earth cable, if pos-
sible secure them with tape;
• make sure that the cables, cutting torch or earth
clamp do not get wrapped around your body;
• never position your body between the welding ca-
bles. Hold both welding cables on the same side
of your body;
28 | GB
• connect the earth clamp as close as possible to the
area being welded;
• do not work too close to the welding machine;
People with cardiac pacemakers or hearing aids are
advised to consult their doctor before using this de-
vice. Exposure to electromagnetic fields while welding
may have other health effects which are not yet known.
Even if the plasma cutter complies with the emission
level as per the standard, the plasma cutter can still re-
sult in electromagnetic disturbances in sensitive sys-
tems and devices. The operator is responsible for mal-
functions that occur through the arc while plasma cut-
ting and must take suitable protective measures. In do-
ing so, the operator must consider the following:
• Power cables, control, signal and telecommunica-
tion lines
• Computer and other microprocessor controlled de-
vices.
• Television, radio and other playback devices
• Electronic and electrical safety equipment
• Persons with cardiac pacemakers or hearing aids
• Measurement and calibration devices
• Noise immunity of other devices in the vicinity
• The time of day at which the cutting work is per-
formed.
The following is recommended to reduce possible
interference radiation:
• Set up and operate the plasma cutter properly in or-
der to minimise possible disruptive emissions.
• The plasma cutter must be regularly maintained and
kept in a good condition
• Cutting cables should be completely unwound and
installed parallel on the floor, if possible
• Devices and systems at risk of interference radia-
tion must be removed from the cutting area if possi-
ble, or shielded.
• Usage of an electromagnetic filter that reduces
electromagnetic interference.
General plasma explanations
• Plasma cutters are operated by pushing pressur-
ised gas, e.g. air, through a small pipe. In the cen-
tre of the pipe, there is a negatively charged elec-
trode that is directly above the nozzle. The vortex
ring causes the plasma to rotate quickly. If you sup-
ply the negative electrode with current and make
the tip of the nozzle touch the metal, this connection
creates a closed, electrical circuit.
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