plant pump station which is failing to move sufficient flow. The project will either refurbish or replace the existing pumps to restore functionality of the pump station. 2.02 GENERAL SCOPE OF SERVICES: A. Work Included 1. Furnish all labor, materials, equipment, and incidentals required for the pump assessment and refurbishment or replacement of the existing duplex pump station at the Quechee Wastewater Treatment Facility. 2. Proposals should be submitted assuming a “wet-end replacement” as the means of refurbishment. If the Contractor determines that the wet-end replacement is unable to return the pump to service, then the entire pump assembly shall be replaced. B. Existing Pumps 1. Manufactured by the Gorman-Rupp Company. The Self-Priming Centrifugal pumps are Model T4A3S-B / WW with a standard Impeller Diameter. C. Performance Requirements 1. Design Criteria: Number of Units 2. Capacity, Each Pump 150 gpm. Total Head 35 feet. Suction Connection 4 inch Class 150 flanged. Discharge Connection 4 inch Class 150 flanged. Maximum Solid Size 3 inches. % Efficiency @ Design 42%. Motor Horsepower 7.5 HP. Maximum Speed 1650 RPM. Service Factor 1.15. Motor Enclosure TEFC. Phase 3. Cycle 60. Voltage 480...
