Elevator and power-operated dumbwaiter cars shall
be provided with durable signs in conspicuous locations on which the
rated capacity shall be indicated.
Machine rooms shall be maintained free of oil and
grease and shall not be used for storage of articles or materials
unnecessary for the maintenance of the elevator or dumbwaiter. Flammable
liquids shall not be kept in such rooms.
No person shall at any time make any required safety
device or electrical protective device inoperative, except where necessary
during tests, inspections or maintenance.