Elevators, dumbwaiters and escalators shall be maintained in
compliance with ASME A17.1. The most current certificate of inspection
shall be on display at all times within the elevator or attached to
the escalator or dumbwaiter, be available for public inspection in
the office of the building operator or be posted
in a publicly conspicuous location approved by the code official. The inspection and tests shall be performed
at not less than the periodic intervals listed in ASME A17.1, Appendix
N, except where otherwise specified by the authority having jurisdiction.
In buildings equipped with passenger elevators, not less than
one elevator shall be maintained in operation at all times when the
building is occupied.
Exception: Buildings equipped with only one elevator
shall be permitted to have the elevator temporarily out of service
for testing or servicing.