Fronius LaserHybrid Ultracompact Twin, Operating Instructions Manual

Page: 12 / 120

12
Danger from es-
caping shielding
gas
Danger from fly-
ing sparks
Hazards from
welding current
Otherwise, a protective mask with an air supply must be worn.
Close the shielding gas cylinder valve or main gas supply if no welding is tak-
ing place.
If there is any doubt about whether the extraction capacity is sufficient, the
measured toxic emission values should be compared with the permissible limit
values.
The following components are responsible, amongst other things, for the de-
gree of toxicity of welding fumes:
-
Metals used for the workpiece
- Electrodes
- Coatings
- Cleaners, degreasers, etc.
The relevant material safety data sheets and manufacturer's specifications for
the listed components should therefore be studied carefully.
Flammable vapours (e.g. solvent fumes) should be kept away from the radia-
tion area of the laser and the arc.
Risk of suffocation from the uncontrolled escape of shielding gas
Shielding gas is colourless and odourless and, in the event of a leak, can dis-
place the oxygen in the ambient air.
-
Ensure an adequate supply of fresh air with a ventilation rate of at least
20 m³/hour.
- Observe safety and maintenance instructions on the shielding gas cylin-
der or the main gas supply.
- Close the shielding gas cylinder valve or main gas supply if no welding is
taking place.
- Check the shielding gas cylinder or main gas supply for uncontrolled gas
leakage before every start-up.
Flying sparks may cause fires or explosions.
Never weld close to flammable materials.
Flammable materials must be at least 11 m (35 ft.) away from the LaserHybrid
welding process, or alternatively covered with an approved cover.
A suitable, tested fire extinguisher must be available and ready for use.
Sparks and pieces of hot metal may also get into adjacent areas through small
gaps or openings. Take appropriate precautions to prevent any danger of in-
jury or fire.
Welding must not be performed in areas that are subject to fire or explosion or
near sealed tanks, vessels or pipes unless these have been prepared in ac-
cordance with the relevant national and international standards.
Do not carry out welding on containers that are being or have been used to
store gases, propellants, mineral oils or similar products. Residues pose an
explosive hazard.
An electric shock can be fatal. Every electric shock is hazardous to life.
All welding cables must be firmly attached, undamaged and properly insulat-
ed. Replace any loose connections and scorched cables immediately.