Cloos QINEO - Page 17

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Operational safety
3.3.4. Gases and vapours
• All metal vapours are harmful to health!
• Be careful with alloys which contain lead, cadmium, cop-
per, zinc, nickel, chrome and beryllium.
• Chloric cleaning and degreasing agents can lead to the
formation of the toxic gas phosgene due to the decompo-
sition in the arc (risk of suffocation!).
• Risk of poisoning in narrow places!
• If shielding gas hoses are not tight or the shielding gas
valve gets caught unintentionally, shielding gas may es-
cape to such an extent that the oxygen content of the in-
haled air decreases, symptoms of poisoning appear which
may lead to unconsciousness and suffocation. (Argon and
CO
2
are heavier than air).
• Sufficient fresh air must be provided! Please check the gas
supplying parts in regular intervals.
• Use fume extraction systems. Pay attention to the national
and regional safety regulations.
3.3.5. Fire prevention (explosion)
• Remove all flammable materials around the welding place
or cover these with a non-flammable or at least hardly
combustible material.
• Hot slag or spatter might cause fires if in contact with
flammable materials.
• Only use shielding gas mixtures suitable for welding con-
sisting of e. g. Argon, Helium, CO
2
and O
2
.
Never use flammable gases such as acetylene, propane or
pure hydrogen.
Never weld on drums, tanks, pipes or similar containers unless
they have been thoroughly cleaned and prepared according
to the relevant national and international standards.
Make sure that no toxic, flammable or explosive vapours can
develop.
Ensure that suitable fire-fighting equipment such as water,
sand or fire extinguishers are within easy reach.
CAUTION!
WARNING!
WARNING!
WARNING!
WARNING!
DANGER!
CAUTION!