(a) All fire protection systems, fire alarm systems, fire detection systems, fire and smoke ventilation systems, fixed fire communications systems, emergency lighting systems, devices or units which were installed in compliance with any permit or order, or because of any law or order, or because of any regulation or ordinance, shall be maintained in an operative condition at all times, and it shall be unlawful for any owner or occupant to reduce the effectiveness of the protection so required; except, that this shall not prohibit the owner or occupant from temporarily reducing or discontinuing the protection where necessary to make tests, repairs, alterations or additions. Except for household fire warning systems, the central fire communications center shall be notified before any disconnection or interruption of protection, tests, repairs, alterations or additions are started, and shall be advised of the extent of and the reason for such work. The restoration of the protection shall be diligently prosecuted, and the central fire communications center shall be notified immediately when service is restored.
(b) When any required fire alarm, fire communication, fire extinguishing, fire detecting, first aid fire fighting system, device or unit, or part thereof becomes inoperative, the Director may order said building or structure or portion thereof vacated until such inoperative system, device or unit is repaired and returned to full service. The Director may permit the building or structure or portion thereof to be occupied when he finds that suitable alternative protective measures are provided. (1975 L.M.C., ch. 23, § 1.)