N.Y. Comp. Codes R. & Regs. tit. 12, § 8-2.4 – Test.

(a) The person or firm making such installation shall notify the commissioner in writing, at least three days before completion of the installation, and shall in the presence of a representative of the commissioner subject the elevator to the test prescribed in subdivisions (b) and (c) of this section.
(b) The cars of all elevators shall be loaded to their maximum carrying capacity and operated up and down the hoistway several times to test the machine. The car shall be stopped at various levels in the hoistway to test the operation of the machine brake.
(c) The car safeties of all elevators shall be tested by slacking the hoisting cables.
(d) Certificate of approval.
If the elevator passes such test satisfactorily, the Industrial Commissioner shall issue a certificate to that effect, which shall bear the date of issue and the same shall be posted in a conspicuous place in the car.
(e) If a representative of the Department of Labor cannot be present at the tests on the date inspection is requested, the commissioner shall immediately so notify the sender of such notice, who shall then make such tests. Upon receipt of a report certified to by the contractor or owner making such installation, that the tests have been made in accordance with the requirements of this section, the commissioner may issue a certificate to that effect if the elevator passed such tests satisfactorily.