GB/
MT
41
앬 Ensure adequate ventilation for welding,
particularly in small rooms since the process
causes smoke and harmful gases.
앬 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.
앬 Special regulations apply in areas where
there is a potential risk of fire and/or
explosion.
앬 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.
앬 Notes:
It must be noted that the protective
conductor in electrical systems or
equipment may be destroyed by the welding
current in the event of negligence, for
example if the earth terminal is placed on
the welding set casing to which the
protective conductor of the electrical system
is connected. The welding work is
completed on a machine with a protective
conductor connection. It is therefore
possible to weld on the machine without
having connected the earth terminal to it. In
this case the welding current will flow from
the earth terminal through the protective
conductor to the machine. The high welding
current may cause the protective conductor
to melt.
앬 The fuses on the supply cables to the mains
sockets 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 (for earthing contact
sockets max. 16 A fuses or 16 A circuit
breakers). The use of too high a fuse may
result in the cable burning and fire damage
to the building.
Constricted and wet areas
Caution!
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 floor, walls, conductive parts of
the equipment 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 (effective value). Therefore, the
equipment may not be used for these purposes
because its output voltage is higher than this.
Safety clothing
Caution!
앬 While working, the welder must protect his
entire body from radiation and burns by
wearing suitable clothing and a face guard.
앬 Slip-on gloves made of a suitable material
(leather) must be worn on both hands. They
must be in perfect condition.
앬 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.
앬 The safety clothing used as well as all
accessories must comply with the directive
on “personal safety equipment”.
Protection from radiation and burns
Caution!
앬 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
flames”. 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.
