Equipment maintenance and supervision:
All oxygen delivery equipment should be checked at least once daily by the patient or caregiver. Facets to be assessed include proper function of the equipment, prescribed flowrates, remaining liquid or compressed gas content, and backup supply. Oxygen equipment (concentra- tors, liquid systems, and cylinders) should be serviced and maintained in accordance with the manufacturer specifications and consistent with all federal, state, and local laws and regulations. In the event there are no manufacturer specifications or guidance, oxygen equipment should be checked for proper function and performance by an appropriately trained and/or credentialed person no less than once per year.