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Remember.
• The radiation from the arc can damage your eyes and
cause burns on skin.
• Arc welding generates sparks and droplets of molten
metal; the welded workpiece may start to glow and will
remain very hot for a relatively long period of time.
• Arc welding releases vapors that may be harmful. Every
electric shock is potentially fatal.
• Do not approach the arc within a radius of 15 m
unprotected.
• Protect yourself (and others around you) against the
possible hazardous eff ects of the arc.
• Warning: Depending on the mains connection
conditions at the connection point of the welding set,
other consumers connected to the mains may suff er
faults.
Important!
If the supply mains and circuits are overloaded, other
consumers may suff er interference during the welding
work. If you have any doubts, contact your electricity
supply company.
Sources of danger during arc welding
Arc welding results in a number of sources of danger. It is
therefore particularly important for the welder to comply
with the following rules so as not to place himself or
others in danger and to avoid endangering people and
equipment.
1. Have all work on the mains voltage system, for example
on cables, plugs, sockets, etc., performed only by trained
electricians. This particularly applies to confi guring
intermediate cables.
2. If an accident occurs, disconnect the welding power
source from the mains immediately.
3. If electric touch voltages occur, switch off the welding
set immediately and have it checked by an expert.
4. Always check for good electrical contacts on the
welding current side.
5. Wear insulating gloves on both hands for welding. These
off er protection from electric shocks (idling voltage in the
welding circuit), harmful radiation (Heat and UV radiation)
and from glowing metal and slag spatter.
6. Wear fi rm, insulated footwear. Your shoes should also
protect you in wet conditions. Open- toed footwear is not
suitable since falling droplets of glowing metal will cause
burns.
7. Wear suitable clothing, do not wear synthetic clothes.
8. Do not look into the arc with unprotected eyes, use
only a welding safety shield with the proper safety glass
in compliance with DIN standards. In addition to light
and heat, which may cause dazzling and burns, the arc
also gives off UV radiation. Without proper protection,
this invisible ultraviolet radiation causes very painful
conjunctivitis, which will only be noticeable several hours
later. In addition, UV radiation will cause sunburn-type
symptoms on unprotected parts of the body.
9. Personnel or assistants in the vicinity of the arc must
also be notifi ed of the dangers and provided with the
required protection; if necessary install safety walls.
10. Ensure adequate ventilation for welding, particularly in
small rooms since the process causes smoke and harmful
gases.
11. Do not carry out any welding work on tanks that have
been used to store gases, fuels, mineral oil or the like, even
if they have been empty for a lengthy period of time, since
any residue will result in a danger of explosion.
12. Special regulations apply in areas where there is a
potential risk of fi re and/or explosion.
13. Welds that are exposed to large stresses and must
comply with safety requirements may only be completed
by specially trained and approved welders. Examples of
such welds include pressure vessels, rails, trailer hitches,
etc.
14. Only use a power source (with earthing contact) that is
protected with a slow-blow fuse, a slow-triggering circuit
breaker and a residual current device.
The fuses must comply with the relevant regulations
(VDE 0100). To comply with these regulations, only fuses
or circuit breakers suitable for the cross-section of the
cables may be used. The use of too high a fuse may result
in the cable burning and fi re damage to the building.
This appliance is not designed for commercial use.
Constricted and wet areas
When working in constricted, wet or hot areas, use
insulating supports and intermediate layers as well as
slip-on gloves made of leather or other non-conductive
materials to insulate your body against the fl oor, walls,
conductive parts of the machine and the like.
If you use small welding transformers for welding in places
with an increase electrical risk, for example in constricted
areas with conductive walls, (tanks, pipes, etc.), in wet
areas (which make work clothes wet) and in hot areas
(perspiration on work clothes), the output voltage of the
welding set when idling must not exceed 42 V (eff ective
value). Therefore, the appliance may not be used for these
purposes because its output voltage is higher than this.
Safety clothing
1. While working, the welder must protect his entire body
from radiation and burns by wearing suitable clothing and
a face guard.
2. Slip-on gloves made of a suitable material (leather)
must be worn on both hands. They must be in perfect
condition.
3. Suitable aprons must be worn to protect clothing from
sparks and burns. A safety suit and, if necessary, head
protection must be worn if required by the type of work in
question, e.g. overhead welding.
Protection from radiation and burns
1. Provide information about the risk to eyes at the
working site in the form of a poster with the wording
«Caution - do not look at the fl ames». Workplaces are to
be screened off wherever possible so that personnel in
the vicinity are protected. Unauthorized persons are to be
kept away from the welding work.
2. The walls in the immediate vicinity of stationary
workplaces should not have a light color or a sheen.
Windows up to head height are to be protected against
radiation passing through them or refl ecting off them, for
example by coating them with a suitable paint.
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