INITIAL OPERATING
Mains connection
Care must be taken to ensure that the voltage supply
for which the machine has been built is the same as
the mains electrical power that is to be used. If the
machine can be adjusted for use on several different
voltages then the machine must be checked to
confirm that it has been set to the correct voltage.
-marking
This machine meets the demands made for
machines which are to operate in environments with
an increased hazard of electric shock.
In certain types of welding jobs there is an increased
hazard of getting an electric shock, e.g. in environ-
ments where the welder has to work in a crouched
position and is therefore in contact with the work-
piece, in places which are partially or totally sur-
rounded by conductive parts, and in wet, damp or hot
places.
When welding under such conditions there must be a
person nearby who can render help in case of an
emergency and he must be able to quickly cut off the
current.
Protection class
The machine is designed for indoor operation and
meets the requirements of protection class IP21.
Please ensure that the air inlet and outlet are not
blocked.
Electromagnetic emissions and the radiation of
electromagnetic disturbances
In conformity with the Electromagnetic Compatibility
(EMC) Directive within the European Union this high-
quality welding machine for industrial and
professional use is designed, built and tested in
accordance with the European Standard EN50199 on
radiation and incident radiation of electromagnetic
disturbances, the purpose of this standard being to
prevent the occurrence of situations, where the
machine is disturbed or is itself the source of
disturbance in other electrical equipment or
appliances.
The responsibility of the user
A trouble-free performance without disturbances or
disruption caused by electromagnetic emissions,
does, however, require that certain measures are
taken when installing and using the welding equip-
ment.
Thus it is the responsibility of the user to ensure that
the operation of this machine does not occasion
disturbances of the above mentioned nature.
Before installing and operating the welding machine,
an assessment of the surrounding area is therefore
required and this assessment is best performed by
the specialist installing the welding machine.
Assessment of area
The following shall be taken into account:
1. Supply cables for other equipment, control cables,
signalling and telephone cables in the vicinity of
the welding machine.
2. Radio or television transmitters and receivers.
3. Computers and any control equipment.
4. Critical safety equipment, e.g. electrically or
electronically controlled guards or protective
systems around process equipment.
5. The medical health circumstances of people in the
area, e.g. the use of pacemakers, hearing aids
etc.
6. Equipment used for calibration and measurement.
7. The immunity to disturbance or disruption of other
equipment in the environment which may be
disturbed and which therefore may require special
protection measures.
8. The time of day that welding or other activities are
to be carried out.
The size of the surrounding area to be considered will
depend on the structure of the building and those
other activities that are to take place in the environ-
ment. Special circumstances may require an ex-
tension of this area.
Use in domestic establishments
This welding machine is normally expected to be
used in industrial situations and areas, and if used in
a domestic establishment the hazard of disturbing
other electric appliances is increased and it may be
necessary to take special and additional precautions
in order to prevent problems of emission.
Methods of reducing electromagnetic emissions
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The welding cables should be kept as short as
possible.
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The welding cables should be positioned with the
negative and the positive cables close together.
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The welding cables should be running at or close
to floor level.
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Mains cables and other cables, e.g. telephone,
computer, and signalling cables, should not be
carried or placed parallel and close to each other,
e.g. not in the same cable tray or box.
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Separately-insulated mains supply cables for
sensitive electronic equipment, e.g. computers.
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Selective screening of cables may be considered
under special circumstances.
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Screening of the entire welding installation may
be considered under special circumstances and
for special applications.
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