Air enters the Compact 525DS Concentrator through the Cabinet Filter which prevent dust and other large particles in the air from entering the unit.

USAGE: Cabinet Filters should be cleaned at least once a week (or whenever dirty) to ensure the ease of air flow. Clean the Cabinet Filter with a mild liquid detergent (such as Dawn and water); rinse in water and allow to air dry completely before reuse. This filter should be replaced as necessary whenever it appears damaged or worn.