Delta+ 90 XFA with FA Flow Control Parts FAQs
Plain answers on the filters, battery, lenses and comfort parts that wear on a powered air-purifying welding helmet system, and how to choose and look after them.
Which parts of a powered welding helmet system wear out and need replacing?
On a powered air-purifying system the main wear items are the particle filters and any pre-filters, the battery, the breathing hose and seals, the helmet's visor and lenses, and the comfort items such as headband padding and neckband covers. The blower is a serviceable part and should be examined if airflow problems persist.
Key maintenance tasks for powered respirators include changing replaceable filters, cleaning the device, checking straps for damage, and checking the battery charge and airflow. Your manual lists the parts that belong to your system, so order from that list rather than by appearance.
How do I know when to change the filters?
Filters only have a limited capacity and can become clogged. Change them in line with the manufacturer's recommendations and also if they have passed their shelf-life date, are damaged or visibly contaminated, or if breathing becomes harder or the airflow warning operates.
Filters cannot be cleaned and reused, and how often they need changing depends on how much welding you do, the fume produced and the workshop conditions. Check the filter and its seal at each use, and keep a record of changes.
What is the difference between a pre-filter and the main filter, and how do I choose them?
A pre-filter is a coarse layer that catches larger dust and spatter before it reaches the main particle filter, and so extends the main filter's life. It usually clogs sooner and is changed more often, but the right interval depends on the maker and how heavy the work is.
For welding fume you need particle filters. Check that the filter type and class are the ones named for your helmet and blower in the manual, and do not mix filters from other systems, because the approval of the combination depends on the correct parts.
Should I use original replacement parts or similar ones?
Ideally, any parts that need replacing come from the original manufacturer of the equipment. This helps the equipment keep working as originally intended and give the protection the maker states.
A filter, hose or seal that looks the same may differ in fit, airflow resistance or approval. Use the parts list in the manual, and quote the information on the blower's label or the old part's markings when you ask a supplier to confirm what suits your system.