Specifications include, but are not limited to: Purchase of one (1) portable drum screen machine. The equipment will be used by the City of Columbus Division of Sewers and Drains for processing sewage sludge into a compost material. The City intends to purchase new, unused and the most current model. The specifications describe a minimum acceptable requirement which a bidder has to meet. However, the bidder is allowed to exceed a minimum requirement where the excess enhances the function of the unit and which the City can accept. It is not acceptable for a bidder to exceed a maximum desired limit. Engine and Engine Controls: 3.3.1.1 Machine shall be powered by a water cooled, diesel engine producing at least 110 hp. 3.3.1.2 The engine shall swing out on a carriage or otherwise be made available for access to both sides, to pumps, hoses, and other engine components. 3.3.1.3 Engine shall be accessible from ground level for safety and ease of service. 3.3.1.4 There shall be at least two (2) emergency shut downs provided and visibly identified with red or yellow labeling. 3.3.1.5 Controls for automatic shutdown of the engine shall be provided for low oil pressure, high temperature, and low coolant level. 3.3.1.6 Engine shall have throttle control range for engine protection from too low or too high rpm. 3.3.1.7 Engine shall include oil filter, air filter, and fuel filter and reverse cooling fan to clear debris from radiator. 3.3.1.8 Engine compartment shall have lighting to illuminate compartment. 3.3.1.9 Engine shall be fitted with a block heater or other method to promote starting during cold weather operation. 3.3.2 Fuel Tank: 3.3.2.1 Fuel tank shall be appropriately sized to provide for at least 16 hours of continuous operation under full load with 900 lb/cu. yd material. 3.3.2.2 Fuel tank shall be mounted with fill tube no higher than seven (7) feet above ground level. 3.3.3 Cooling System: 3.3.3.1 Shall be equipped with a reversing cooling fan for radiator and hydraulic cooling system for self-cleaning. 3.3.3.2 Engine and hydraulic radiators may be integrated into a single radiator or kept separate. 3.3.3.3 Radiators shall not be stacked front to back with dead air space between the two radiators which would cause fins to plug. 3.3.3.4 Cooling system shall have method for checking coolant level with the use of a visual sight glass or recovery tank.