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The LINCOLN ELECTRIC KP3940-1 is a PAPR SAR (Powered Air-Purifying Respirator Supplied-Air Respirator) headgear assembly designed for use with the Viking 3350 XG series welding helmet. This accessory integrates with the helmet to deliver filtered or supplied air directly to the welder, providing respiratory protection during heavy industrial and welding operations. It is installed and serviced by welding professionals, safety officers, and industrial contractors working in environments where airborne contaminants, fumes, or particulates present a respiratory hazard. The unit weighs 1 pound, making it a lightweight addition to the overall helmet assembly.
This headgear is suited for a wide range of industries and applications where respiratory protection is required alongside arc welding or cutting. Applicable environments include automotive fabrication, construction and field erection, heavy equipment repair, railroad maintenance, military armor plate welding, brewery and distillery operations, galvanized steel work, gasification plants, elevated temperature piping, and general heavy fabrication. It is appropriate for both shop and field use wherever the Viking 3350 XG helmet is deployed.
Designed for use with the Viking 3350 XG series welding helmet by Lincoln Electric. Compatible applications include mining, railroad maintenance, armor plate (military), automotive, brewery, construction and field erection, dissimilar metals, distillery, elevated temperature piping, galvanized steel, gasification plants, general fabrication, heavy equipment, and heavy fabrication environments.
Installation and fitting should be performed by a qualified safety professional or experienced welding operator familiar with PAPR and SAR respiratory equipment. Before attaching or adjusting the headgear assembly, ensure the welding helmet is powered down and all air supply lines are depressurized and disconnected. Follow the helmet manufacturer assembly instructions and applicable OSHA respiratory protection standards (29 CFR 1910.134) when integrating this headgear into a full respiratory protection program. Do not modify the headgear or use it with helmet models other than those specified in the input.
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