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ESAB Swarm A20 Parts

ESAB Swarm A20 Parts FAQs

Answers to common questions about replacement cover lenses and headgear for powered air respirator welding helmets, and how to choose and look after them.

When should I replace a cover lens?icon-minus-redicon-plus-red

Replace a cover lens as soon as it is cracked, scratched, pitted or too dirty to clean, or when it spoils your view. Replace the front cover lens if it is damaged, and check it for scratches or damage as part of the checks before use. A cloudy or pitted lens also makes the weld pool harder to see.

How quickly lenses wear depends on the work. Heavy spatter or grinding marks them much faster than light TIG work, so there is no single interval that suits everyone. Follow the manual for your helmet and keep spares to hand so that you never carry on with a damaged lens.

What does a cover lens do on a welding helmet or powered respirator helmet?icon-minus-redicon-plus-red

A cover lens is a clear, replaceable plate that sits in front of the welding filter, and on many helmets there is a second one on the wearer's side. The front one takes the spatter, sparks and scratches so that the filter behind it does not have to. Because it is simple to swap, it protects the more delicate filter and keeps your view clear.

A cover lens is a wear item. It does not replace the filter and it does not make the filter safe to use if the filter itself is cracked or damaged. Always fit the type the helmet maker specifies for your model and check the manual.

What is the difference between a front cover lens and an inner cover lens?icon-minus-redicon-plus-red

A front (outer) cover lens faces the weld and takes the spatter, sparks and dust. An inner cover lens sits on the wearer's side of the filter and protects that surface from sparks, spatter and scratches. Both are regular replacement items, and the front one is normally replaced more often because it takes the punishment.

They are usually different shapes and sizes, so they are not interchangeable. Fit only the type the helmet maker lists for your model, and check the manual for how each is fitted and when to replace it. Keep spares of both types.

How do I make sure I order the right lens or headgear?icon-minus-redicon-plus-red

Cover lenses and headgear are normally made for a particular helmet series, so they are not universal. Start with the helmet's manual, which lists the replacement parts and their part numbers, and compare any number marked on the old part. Check the shape and size of the old lens against the new one, and for headgear check how it attaches and how many fixing points it has.

For a powered respirator helmet, replacement parts should ideally come from the original maker so the equipment keeps working as intended. Be careful with parts said to fit several models and confirm against your manual. Our team can help you match a part if you have the helmet details.

Can I use non-original or universal parts on a powered respirator helmet?icon-minus-redicon-plus-red

Take care. Replacement parts for respiratory protective equipment should ideally be sourced from the original maker so the equipment continues to perform as originally intended and gives the protection stated. Use genuine parts only, because unauthorised parts may be dangerous.

A helmet, hose, filter and blower are tested and approved as a system. For lenses and headgear on a powered system, use the parts the maker lists for your helmet. If you are unsure, ask the maker before fitting it, never modify the helmet, and do not use a damaged part because a replacement is not to hand.

How should I clean cover lenses without damaging them?icon-minus-redicon-plus-red

Follow the cleaning advice in your helmet's manual. Wipe a lens gently with a soft, lint-free cloth, and a little water with a mild detergent may be acceptable. Check the manual before using any cleaning product, avoid solvents and abrasive cleaners unless the maker says they are acceptable, and do not immerse electronic parts in water. Rinse or brush off loose grit before wiping, because dragging grit across a lens can scratch it.

Do not rub a dry lens or use paper towels or rough cloths. If a lens is deeply scratched, pitted or too dirty to clean, it should be replaced.