Section R. 325.2442a - Respiratory protective equipment; maintenanceRule 42a.
(1) Respiratory protective equipment shall be maintained in clean and effective condition.(2) Routinely used equipment shall be cleaned, inspected, and sanitized as frequently as necessary to ensure that proper protection is provided for the wearer.(3) Emergency equipment that is not routinely used shall be inspected, cleaned, and sanitized after each use and inspected at least monthly to ensure that it is in effective working condition. A record shall be kept of inspection dates and findings.(4) Equipment inspection shall include a check of the tightness of connections and the proper functioning of all parts.(5) Replacement or repairs shall be made by trained persons with parts designated for the specific equipment. Reducing valves or regulators shall be returned to the manufacturer or to a trained technician for adjustment or repair.(6) Equipment shall be stored to protect against dust, sunlight, heat, extreme cold, excessive moisture, or damaging chemicals.Mich. Admin. Code R. 325.2442a