The City Administrator has the custody and management of all the public property, including the fire alarm telegraph, pertaining to Portland Fire & Rescue. The Mayor has power and authority, subject to the limitations and appropriations made and expenditures authorized by the Council, to enter into agreements for purchase and acquire all necessary apparatus, including fireboats, engines, hose, hose carriages, and all other personal property which the exigencies of an efficient Portland Fire & Rescue may require. The City Administrator may sell and dispose at public sale under the provisions of the Charter relating to sales of public property of any portion of said personal property whenever the same is not required, or when it may be considered by the City Administrator unfit for service in the Bureau. The proceeds of any such sale must be paid by the purchaser to the Treasurer of the City, who will issue a proper receipt therefor, and all such monies will be credited to the General Fund of the City.