Requirement For The Shielding Gas; Danger From Shielding Gas Cylinders; Danger Posed By Shielding Gas Leak - Fronius WF 25i Dual Operating Instructions Manual

Requirement for Especially with ring lines, contaminated shielding gas can cause damage to
the shielding gas equipment and reduce welding quality.
Meet the following requirements regarding shielding gas quality:
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Use filters if necessary.
Danger from Shielding gas cylinders contain compressed gas and may explode if damaged.
Shielding Gas
Shielding gas cylinders are an integral part of the welding equipment, so they
Cylinders must be handled very carefully.
Protect shielding gas cylinders with compressed gas from excessive heat, mech-
anical impact, slag, open flames, sparks, and arcs.
Mount the shielding gas cylinders vertically and secure them in accordance with
instructions so they cannot fall over.
Keep shielding gas cylinders away from welding or other electrical circuits.
Never hang a welding torch on a shielding gas cylinder.
Never touch a shielding gas cylinder with an electrode.
Risk of explosion: Never weld on a compressed shielding gas cylinder.
Always use suitable shielding gas cylinders for the application in question and the
correct matching accessories (controller, hoses, and fittings, etc.) Only use
shielding gas cylinders and accessories that are in good condition.
If a valve on a shielding gas cylinder is open, turn your face away from the outlet.
When no welding is taking place, close the valve of the shielding gas cylinder.
Leave the cap on the valve of the shielding gas cylinder when the cylinder is not
connected.
Follow the manufacturer's instructions and applicable national and international
provisions for shielding gas cylinders and accessories.
Danger Posed by
Risk of asphyxiation due to uncontrolled shielding gas leak
Shielding Gas
Shielding gas is colorless and odorless and may suppress the oxygen in the ambi-
Leak
ent air in the event of leakage.
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Solid particle size < 40 µm
Pressure condensation point < -20 °C
Max. oil content < 25 mg/m³
Ensure there is a sufficient supply of fresh air with a ventilation flow rate of
at least 20 m³ per hour.
Please observe the safety and maintenance information for the shielding gas
cylinder or the main gas supply.
When no welding is taking place, close the valve of the shielding gas cylinder
or the main gas supply.
Always check the shielding gas cylinder or main gas supply for uncontrolled
gas leakage before each start-up.
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