(A)   Whenever necessary to make an inspection to enforce any of the provisions of this Article, the Director of Planning and Zoning or his authorized representative may enter such premises at any reasonable time to inspect the premises or to perform any duty imposed upon him; provided, however, that if such premises is occupied, he shall first present proper credentials and demand entry. If such premise is unoccupied, he shall first make a reasonable effort to locate the owner or other persons having charge or control of the premises and demand entry.
   (B)   If entry is refused or if the owner or other responsible person is not found, the Director or his authorized representative shall proceed according to § 9.2.24(E).