Elevators, dumbwaiters and escalators shall be maintained to
sustain safely all imposed loads, to operate properly and to be free
from physical and fire hazards. The most current certificate of inspection
shall be on display at all times within the elevator or attached to
the escalator or dumbwaiter; or the certificate shall be available
for public inspection in the office of the building operator. 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, at least one
(1) elevator shall be maintained in operation at all times when the
building is occupied. Exception: Buildings equipped with only one
(1) elevator shall be permitted to have the elevator temporarily out
of service for testing or servicing.