Telwin ALUCAR 5100 Manuel D'utilisation page 5

_____________________( GB )____________________
INSTRUCTION MANUAL
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WARNING: BEFORE USING THE MACHINE READ THE
INSTRUCTION MANUAL CAREFULLY!
CAPACITOR DISCHARGE WELDING MACHINES FOR
WELDING STUDS WITH IGNITION SPOT STRIKE, FOR
INDUSTRIAL AND PROFESSIONAL USE.
Note: In the following text the term "welding machine"
will be used.
1. GENERAL SAFETY INSTRUCTIONS FOR CAPACITOR
DISCHARGE WELDING
The operator must receive full instructions regarding
safe use of the welding machine and must be informed
of the risks related to capacitor discharge welding
procedures, of related safety measures and of
emergency procedures.
- Do not come into direct contact with the welding
circuit; the open circuit voltage supplied by the power
source can be dangerous in certain conditions.
- When connecting the welding cables and when
carrying out checks or repairs, the welding machine
should be switched off and disconnected from the
main power supply.
- Switch off the welding machine and disconnect it
from the power supply before changing worn parts
on the gun.
- Electrical installation should comply with health and
safety legislation and standards.
- The welding machine must be connected only
and exclusively to a power supply with the neutral
conductor connected to earth.
- Make sure that the power supply outlet is correctly
connected to the earth conductor.
- Do not use the welding machine under damp or wet
conditions or in the rain.
- Do not used cables with worn insulation or loose
connections.
- Never look into the inside of the machine (and only
then for extraordinary maintenance) unless you are
completely satisfied that:
- the main switch on the machine is in the "O" position;
- the automatic circuit-breaker on the mains circuit
is in the "O" position and locked with a key or, if
there is no lock, the power supply cables have been
physically disconnected from the main supply;
- given the presence of capacitors, the power source
has been switched off for at least 5 minutes before
starting maintenance work.
- Do not weld on containers, receptacles or piping that
contain or have contained inflammable liquids or
gases.
- Do not work on materials cleaned with chlorinated
solvents or in the vicinity of such substances.
- Do not weld on containers under pressure.
- Remove all inflammable substances (e.g. wood,
paper, rags etc.) from the working area.
- In order to reduce the production of fumes during
welding, we recommend cleaning the pieces first
(e.g. pieces that have been painted, are soiled with
lubricants or thinners, or have been galvanised);
- Make sure there is adequate electrical insulation
with respect to the workpiece and to any (accessible)
earthed metal parts in the vicinity.
This can usually be achieved by wearing special
gloves, shoes, head coverings and clothing made
for this purpose and by using insulating platforms or
mats.
- Always protect the eyes. Use special fire-resistant
protective clothing.
- Noise levels: If particularly intensive welding
operations lead to a daily personal noise exposure
(LEP,d) of 85dB(A) or more, the use of suitable
personal protection equipment is obligatory.
- The flow of the welding current generates
electromagnetic fields (EMF) around the welding
circuit.
Electromagnetic fields can interfere with certain
medical equipment (e.g. Pace-makers, respiratory
equipment, metallic prostheses etc.).
Adequate protective measures must be adopted for
persons with these types of medical apparatus. For
example, they must be forbidden access to the area in
which welding machines are in operation.
This welding machine conforms to technical
product standards for exclusive use in an industrial
environment for professional purposes. It does not
assure compliance with the basic limits relative to
human exposure to electromagnetic fields in the
domestic environment.
The operator must adopt the following procedures in
order to reduce exposure to electromagnetic fields:
- Fasten the two welding cables as close together as
possible.
- Keep head and trunk as far away as possible from the
welding circuit.
- Never wind welding cables around the body.
- Avoid welding with the body within the welding
circuit. Keep both cables on the same side of the
body.
- Connect the welding current return cable to the piece
being welded, as close as possible to the welding
joint.
- Do not weld while close to, sitting on or leaning
against the welding machine (keep at least 50 cm
away from it).
- Do not leave objects in ferromagnetic material in
proximity of the welding circuit.
- Minimum distance d= 20 cm (Fig. L).
- Class A equipment:
This welding machine conforms to technical product
standards for exclusive use in an industrial environment
and for professional purposes. It does not assure
compliance with electromagnetic compatibility in
domestic dwellings and in premises directly connected
to a low-voltage power supply system feeding buildings
for domestic use.
EXTRA PRECAUTIONS
WELDING OPERATIONS:
- In environments with increased risk of electric shock;
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