ESAB Sentinel A60 Air w/ EPR-X1 PAPR Parts FAQs
Spares for a powered air-purifying welding helmet system: filters, pre-filters, batteries, lenses, hose covers and comfort items, and how to pick the right ones.
How do I make sure a spare part fits my powered respirator and helmet?
Start with the data plate or label on the blower unit and the helmet, then the manual, which lists the parts that belong to that system. Compare the part number or marking on the old part with the new one, and check that the blower, filter, hose and helmet are meant to be used together. Makers generally state that only original or specified parts should be used with their respirators, because other parts may mean the protection level no longer meets the stated standard and may void the warranty.
If the markings are worn away or you are unsure, check with the supplier before buying rather than guessing from a photo.
What does a P3 particle filter protect against, and what does it not?
A P3 filter is a high-efficiency particle filter, which is the type normally used to deal with welding fume. It removes solid and liquid particles from the air passing through the blower.
It does not remove gases or vapours, such as those from solvents, degreasers or certain coatings. A particle filter must not be relied on for gas hazards, and if both particles and gas are present you need a suitable combined filter and a risk assessment. Check what contaminants are in your work area and the filter markings in the manual before choosing.
What is a pre-filter for, and when should I change it?
A pre-filter fits over or ahead of the main filter and collects the larger particles, so the main filter clogs more slowly. Makers state that it prolongs the life of the main filter, and a clogged filter also shortens battery run time because the blower has to work harder.
Change it when it looks dirty, discoloured or loaded with dust, or if it is damaged. There is normally no fixed number of hours, so use the manual and your own experience of how much dust and fume your work creates. Always refit any spark guard the system requires, because sparks can damage the filter.
How should I look after the battery and charger?
Use only the charger and battery intended for your system and follow the charging instructions in the manual. Charge in a dry, ventilated place away from anything that could burn, and do not cover the charger. Fire services advise not leaving lithium-ion batteries charging unattended, so disconnect the battery once it is charged unless the maker states that the charger is designed to stay connected.
Do not charge or keep using a battery that is damaged, swollen, leaking, very hot or smelling odd. Batteries slowly lose charge in storage, so charge before use after a long break. A battery that no longer holds a charge, or gives short run time even with a clean filter, should be replaced.