Maintenance, Repair and Removal. Every sign and sign structure permitted by this section shall be kept in good condition and repair. The repainting, relettering or repair of an existing sign shall not constitute a new sign or change in a sign as long as the area of the sign is not increased. When any sign or sign structure becomes insecure, in danger of falling or is otherwise deemed unsafe by the Code Official, or if any sign shall be unlawfully installed, erected or maintained in violation of any of the provisions of this section, the owner thereof or the person or firm using same shall, upon written notice by the Code Official forthwith in the case of immediate danger, and in any case within not more than 14 days, make such sign conform to the provisions of this section, or shall remove it. If within 14 days the order is not complied with, the Code Official shall be permitted to remove or cause such sign to be removed at the expense of the owner and/or the user of the sign.