{"product_id":"pentair-cs400™-commercial-backwash-semi-auto-controller-for-01-tank-system","title":"Pentair CS400™ Commercial Backwash Semi-Auto Controller for '01 Tank System","description":"\u003cp\u003eThe Pentair Stark™ CS400™ Commercial Semi-Automatic Backwash Controller for a 1-Tank System (Model CS400-01) is a specialized, intelligent automation hub designed to manage and optimize the backwash cycle of a single, large-scale commercial sand filtration vessel. Engineered for high-demand municipal swimming pools, water park features, and semi-commercial aquatic centers using Stark™ or THS Series® horizontal sand filters, this sophisticated control unit eliminates the labor and human error associated with manual plumbing operations. Powered by integrated Acu-Trol® intelligence, the CS400 allows facility operators to safely initiate a comprehensive, multi-stage backwash cycle with the single touch of a button, via an external signal from a master room controller (like the Acu-Trol AK600), or through an optional differential pressure switch. Once triggered, the internal, motorized multiport pressure distribution valve automatically routes regulated city water pressure or compressed air (ideally 35 to 40 PSI) to mechanically actuate the filter's large, diaphragm-style face-piping valves. This automated execution guarantees a highly consistent fluidization of the sand media bed to thoroughly flush away trapped organic debris and fine particulate matter while incorporating vital equipment protections—such as a built-in \"Fireman's Delay\" heater cool-down relay and main circulation pump interlocks to prevent mechanical cavitation or thermal shock. The hardware is housed entirely within a heavy-duty, weather-resistant, and NEMA-rated non-corrosive enclosure built to survive the humid, chemical-laden environments of commercial pump rooms, and it features an intuitive, backlit LCD display alongside dedicated LED status indicators for real-time monitoring. The dry product weight of the Pentair CS400-01 Semi-Automatic Backwash Controller is approximately \u003cb data-path-to-node=\"1\" data-index-in-node=\"1877\"\u003e25 pounds\u003c\/b\u003e (with a boxed shipping weight of roughly 26 pounds including the integrated internal pressure regulators, plumbing check valves, and mounting hardware), offering commercial aquatic facility managers an exceptionally reliable, water-conserving, and high-tech fluid-management solution.\u003c\/p\u003e","brand":"Commercial Pool and Spa Supplies","offers":[{"title":"Default Title","offer_id":53159809482863,"sku":"CS400-01","price":11485.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0678\/3785\/3807\/files\/KDI-05-1013_medium_5a50063e-7e1e-40a8-a786-d87c1367e5a1.jpg?v=1779822986","url":"https:\/\/commercialpoolandspasupplies.com\/products\/pentair-cs400%e2%84%a2-commercial-backwash-semi-auto-controller-for-01-tank-system","provider":"Commercial Pool and Spa Supplies ","version":"1.0","type":"link"}