Weldline Silver Zeyphyr Flip Air LS PAPR Parts FAQs
Filters, batteries, hoses, straps and helmet parts for a powered air respirator welding helmet, and how to choose and look after them.
Which parts of a powered air welding helmet system wear out and need replacing?
The HSE lists the key maintenance tasks for powered respirators as changing replaceable filters, cleaning the device, checking the straps for damage and checking the battery charge and flow rate. In a welding helmet system that usually means the main particle filter, any pre-filter, the battery, the breathing hose and its cover, the belt or shoulder strap, and the helmet's own seals, lenses and headgear.
How quickly each wears depends on the work, the fume level and the maker's instructions, so use the manual as your guide.
How do I pick the right replacement particle filter?
Match it to the type the maker specifies for your blower unit, using the manual or the marking on the old filter. Particle filters are marked P1 (low efficiency), P2 (medium) and P3 (high), according to HSE guidance. Welding fume is a particulate hazard. For arc welding, HSE welding guidance recommends powered or supplied-air equipment with an assigned protection factor of at least 20, and it names P3 as the filter level for half masks.
A particle filter does not protect against gases or vapours. If your work produces them, ask the maker or your risk assessor about a combined filter before choosing.
How often should the main filter be changed?
There is no single interval. The HSE says replaceable filters have a limited capacity and can clog, so they should be changed as the manufacturer instructs and whenever they are damaged, visibly contaminated or when airflow drops.
How quickly a filter loads depends on the amount of welding, the fume produced, the material and the working conditions. Low airflow or a warning from the unit is a sign to stop and check the filter and battery. Fit identical filters together if the unit takes more than one, and change them all at the same time. Never run the unit without the filter fitted.
How do I check the airflow, and what do I do if it drops?
Always check that the fan is providing enough airflow before you use the device, following the maker's airflow check in the manual. The HSE guidance is clear that you should never keep working if the fan stops or the flow rate falls: leave the work area immediately. If your unit has a low-flow warning, treat it the same way.
Then check for a blocked or loaded filter, a flat battery, a kinked or damaged hose or a loose connection. Do not return to work until the fault is corrected and the airflow check passes. If you cannot find the fault, have the unit examined by a competent person.