Q: How often should dust-free air showers be certified?
A: Every 6 months is ideal, using calibrated particle counters to verify particulate concentration limits are maintained.
Q: What material choices work best?
A: Stainless steel for durability. Avoid powder coated metals or plastics that shed particles.
Q: What air velocities are optimal?
A: 60 - 90 meters per minute airflow provides good small particle removal with smooth laminar flow.
Q: Do they require special electrical classifications?
A: Dust-free air showers typically require NEC/CEC Class 1 Division 1 certification for use in potentially explosive environments.
Q: How long is the lifespan before needing replacement?
A: Approximately 15 years with proper maintenance and filter replacement. Stainless steel enclosures last the longest.