Lincoln EuropurePLUS PAPR 5500 Parts FAQs
Filters, batteries, blower and head-top spares for a powered air respirator used with a welding helmet, and how to keep them in working order.
Which parts of a powered respirator wear out or need regular replacing?
The main ones are the particle filter, any pre-filter or spark guard in front of it, the battery, and the head-top parts such as sweatbands and cover or inner lenses. The breathing tube, seals and straps can also wear or become damaged.
The HSE guide to respiratory protective equipment lists the key maintenance tasks as changing replaceable filters, cleaning, checking straps for damage, and checking battery charge and flow rate on powered devices. Which parts your unit has, and how they come apart, depends on the maker, so use the manual and the data plate.
How do I know when the filter needs changing?
Filters have a limited capacity and can clog, and a clogged filter reduces airflow. The usual signs are a low-airflow alarm or indicator, a unit that fails its airflow check even with a fully charged battery, or a filter that is physically damaged. Makers say the unit must not be used if it fails the airflow test.
There is no single time interval, because it depends on how much fume you work in and how often. If the alarm sounds while you are working, leave the fume area straight away and follow the maker's instructions before you go back.
What do a pre-filter and a spark guard do?
In welding units the parts are usually fitted in layers. A spark guard (arrestor) sits at the front to stop hot spatter reaching the filters. A pre-filter catches larger particles before they reach the main particle filter, so that the main filter clogs more slowly.
Hot spatter can damage filter material, so a damaged or missing spark guard matters: check it before each use and replace it if it is damaged. A clogged filter makes the blower work harder, which can also affect battery run-time. Always fit these parts in the order and way the manual shows.
How do I check the airflow before I start work?
Follow the maker's airflow check each time you use the unit. Typically this means a fully charged battery, filters fitted correctly, the breathing tube connected to the head-top, and an airflow indicator or low-flow alarm test as the manual describes. HSE guidance for users also says to make sure battery-powered equipment is fully charged and that hoses are connected properly.
If the unit fails the test, do not use it. Repeat the test with a fully charged battery and a new filter, and contact the maker or your supplier if it still fails.