Stager Controllers for well-water filtration systems

The Contractor shall provide five (5) custom Stager Controllers for the well-water filtration systems that are installed at the following Locks and Dams; LD2 (Hastings, MN), LD5 (Minnesota City, MN), LD5A (Fountain City, WI), LD7 (La Crescent, MN), LD9 (Eastman, WI).  These systems were originally designed, built and installed by Robert Hill Company in St Louis Park, MN.Stager ControllerComplete Stager ModuleUL (or nationally accredited test lab) listed components.12-month parts and labor warrantyPrograms start, stop and cycle time of backflush cycle for well water filtration system.Capable of controlling pump and up to four greensand tanks.Measures and displays flow which can be used to determine that system is working effectively.Water flow ranges between 0-100 GPM (gallons per minute).  Typical service flow rate is 75 GPM (@ 3.5 fps).Backwash Cycle:First Stage: 8 GPM/Sq FtMain Wash: 15 GPM/Sq FtMaximum Backwash Rate: 18 GPM/Sq FtBackwash Flow Rate: 75 GPMFirst Stage Flow Rate: 40 GPMFirst Stage Duration: 2 minutesTotal Backwash Duration: 10 minutesQuantity of Five (5) units at locations listed. Installation and TrainingIncludes turnkey installation, integration, programming and trainingIncludes Operator and Maintenance (O&M) Manual complete with schematics, recommended spare parts, part