Optrel Crystal 2.0 with e3000 System Parts FAQs
Spares for one maker's powered-air welding helmet and earlier-generation blower system: headbands, fixings, repair sets, filters and protective extras.
How do I tell which spares suit my helmet and blower generation?

Use the labels on the helmet and the blower unit and the manual that came with them. Makers often change blower, battery and filter designs between generations, so parts that look alike may not be interchangeable. A part number on the old part, or in the manual's parts list, is the surest match.
HSE guidance says to follow the manufacturer's instructions for maintenance and, ideally, to source replacement parts from the original manufacturer so the equipment keeps performing as intended. A part the maker does not list for your system may not give the protection intended. If you are unsure, our team can help you check before you order.
What are the small fixings and repair sets for?

Helmets are held together by small parts such as bolts, quarter-turn fixings, pivots and clips, which can wear, crack or go missing with daily handling. A repair set usually groups the common wear items for one helmet type so a single fault does not take it out of use.
Check the manual or parts list to see exactly what a set contains for your system. Replace threaded or turn fixings that are stripped or loose rather than forcing them, and use the correct ones, as the wrong size can damage the shell. Never use a helmet with a broken or missing fixing.
Why use head and neck protection with a welding helmet?

HSE says welders' skin can be exposed to ultraviolet radiation, with sunburn-like reddening the commonest result, so covering the neck and the gaps around the helmet helps. A leather or flame-resistant head and neck cover also helps against spatter and sparks.
It must suit your helmet. Some covers are not suitable for every helmet or powered-air configuration, so read the part description and manual and confirm it does not block airflow, the seal or the hose connection. Check it regularly and replace it if it is scorched, hardened or split.
How do I choose the strength of a magnifying lens?

A magnifying lens, sometimes called a cheater lens, fits inside the helmet for close or fine work. Its strength is in dioptres, and a higher number gives more magnification. Pick enough to see the weld clearly without straining your eyes, since too strong a lens can make your work harder to judge.
If you wear glasses, discuss it with an optician as the lens works alongside your correction. Check the lens size and mounting suit your helmet and filter, keep it clean and replace it when scratched. Starting with a lower strength is usually the safer way to find what suits you.