It shall be unlawful for any person to enter the Fire Department station or any place where the equipment and apparatus of the Fire Department is stored at any time, except on business pertaining to the Fire Department or other City business, or to remain thereon after such business is complete. It shall also be unlawful for any person to enter or remain in the above premises after being ordered not to do so by any member of the Fire Department or by any volunteer firemen. (1988 Code §5.409)