Maintenance includes analyzing concentrators for oxygen percentage and liter flow, changing internal filters as recommended by the manufacturer, and cleaning the entire machine.  Audits are provided to the facility for your records when it’s state inspection time.  Scheduled preventive maintenance is also performed on other equipment such as CPAP and BIPAP, high volume compressors for tracheostomy patients, and specialty mattresses for wound care. Arrangements can also be made to do the required maintenance on facility-owned equipment.