{"product_id":"pentair-523735-plus40-salt-chlorine-generator-cell-40k-gallons","title":"Pentair 523735 PLUS40 Salt Chlorine Generator Cell 40K Gallons","description":"\u003cp data-end=\"599\" data-start=\"311\"\u003e\u003cstrong data-end=\"369\" data-start=\"311\"\u003eThe Pentair 523735 PLUS40 Salt Chlorine Generator Cell\u003c\/strong\u003e is a genuine OEM replacement designed for pools up to 40,000 gallons. It replaces the IntelliChlor IC40 (520555) cell and delivers reliable, high-output chlorine production to keep your pool water clean, clear, and comfortable.\u003c\/p\u003e \u003chr data-end=\"604\" data-start=\"601\"\u003e \u003ch3 data-end=\"628\" data-start=\"606\"\u003e\u003cstrong data-end=\"626\" data-start=\"610\"\u003eKey Features\u003c\/strong\u003e\u003c\/h3\u003e \u003cul data-end=\"1156\" data-start=\"630\"\u003e \u003cli data-end=\"686\" data-start=\"630\"\u003e \u003cp data-end=\"686\" data-start=\"632\"\u003eGenuine OEM replacement salt cell for PLUS40 systems\u003c\/p\u003e \u003c\/li\u003e \u003cli data-end=\"740\" data-start=\"687\"\u003e \u003cp data-end=\"740\" data-start=\"689\"\u003eDirect replacement for IntelliChlor IC40 (520555)\u003c\/p\u003e \u003c\/li\u003e \u003cli data-end=\"784\" data-start=\"741\"\u003e \u003cp data-end=\"784\" data-start=\"743\"\u003eSuitable for pools up to 40,000 gallons\u003c\/p\u003e \u003c\/li\u003e \u003cli data-end=\"847\" data-start=\"785\"\u003e \u003cp data-end=\"847\" data-start=\"787\"\u003eProduces a steady supply of pure chlorine via electrolysis\u003c\/p\u003e \u003c\/li\u003e \u003cli data-end=\"917\" data-start=\"848\"\u003e \u003cp data-end=\"917\" data-start=\"850\"\u003eEliminates the need for handling and storing traditional chlorine\u003c\/p\u003e \u003c\/li\u003e \u003cli data-end=\"980\" data-start=\"918\"\u003e \u003cp data-end=\"980\" data-start=\"920\"\u003eLong-life titanium blades with corrosion-resistant coating\u003c\/p\u003e \u003c\/li\u003e \u003cli data-end=\"1045\" data-start=\"981\"\u003e \u003cp data-end=\"1045\" data-start=\"983\"\u003eDesigned for consistent sanitization and reduced maintenance\u003c\/p\u003e \u003c\/li\u003e \u003cli data-end=\"1099\" data-start=\"1046\"\u003e \u003cp data-end=\"1099\" data-start=\"1048\"\u003eSimple installation with compatible control units\u003c\/p\u003e \u003c\/li\u003e \u003cli data-end=\"1156\" data-start=\"1100\"\u003e \u003cp data-end=\"1156\" data-start=\"1102\"\u003eCell only – control box\/power center sold separately\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003chr data-end=\"1161\" data-start=\"1158\"\u003e \u003ch3 data-end=\"1189\" data-start=\"1163\"\u003e\u003cstrong data-end=\"1187\" data-start=\"1167\"\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e \u003cp data-end=\"1542\" data-start=\"1190\"\u003eThe Pentair 523735 PLUS40 Salt Chlorine Generator Cell provides dependable, high-output sanitation for mid-to-large sized pools. Engineered as a direct replacement for the IntelliChlor IC40 (520555), it uses the proven electrolysis process to convert dissolved salt into pure chlorine, keeping pool water safe, sparkling, and gentle on skin and eyes.\u003c\/p\u003e \u003cp data-end=\"1919\" data-start=\"1544\"\u003eConstructed with heavy-duty titanium blades coated for durability, the PLUS40 cell is built to withstand harsh pool conditions and deliver years of consistent performance. Its compatibility with existing Pentair salt systems allows for quick, hassle-free installation, making it an ideal choice for replacing a worn or expired IC40 cell without upgrading the entire system.\u003c\/p\u003e \u003cp data-end=\"2022\" data-start=\"1921\"\u003eThis listing includes the \u003cstrong data-end=\"1965\" data-start=\"1947\"\u003esalt cell only\u003c\/strong\u003e, perfect for direct replacement in compatible systems.\u003c\/p\u003e \u003ch1\u003e \u003cem\u003e\u003c\/em\u003e\u003cbr\u003e \u003c\/h1\u003e \u003ch1\u003e\u003cem\u003eEnjoy Cleaner, Clearer, and Silkier Pool Water\u003c\/em\u003e\u003c\/h1\u003e \u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0808\/6319\/9544\/files\/Screenshot_2025-05-05_123344.png?v=1746473863\"\u003e\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0808\/6319\/9544\/files\/Screenshot_2025-05-05_123428.png?v=1746473863\"\u003e\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0808\/6319\/9544\/files\/Screenshot_2025-05-05_123453.png?v=1746473863\"\u003e\u003c\/p\u003e \u003cp data-start=\"341\" data-end=\"646\"\u003eThe Pentair 523735 PLUS40 Salt Chlorine Generator Cell is a direct replacement for the 520555 model, designed for pools up to 40,000 gallons. It offers enhanced serviceability, accuracy, and value, featuring a modular design, improved diagnostics, and seamless integration with Pentair automation systems.\u003c\/p\u003e \u003chr data-start=\"648\" data-end=\"651\"\u003e \u003ch3 data-start=\"653\" data-end=\"679\"\u003e\u003cstrong data-start=\"657\" data-end=\"679\"\u003eKey Bullet Points:\u003c\/strong\u003e\u003c\/h3\u003e \u003cul data-start=\"681\" data-end=\"1905\"\u003e \u003cli data-start=\"681\" data-end=\"792\"\u003e \u003cp data-start=\"683\" data-end=\"792\"\u003e\u003cstrong data-start=\"683\" data-end=\"716\"\u003eDirect Replacement for 520555\u003c\/strong\u003e: \u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eSeamlessly replaces the Pentair IntelliChlor IC40 cell, ensuring compatibility with existing systems.\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"794\" data-end=\"915\"\u003e \u003cp data-start=\"796\" data-end=\"915\"\u003e\u003cstrong data-start=\"796\" data-end=\"839\"\u003eDesigned for Pools Up to 40,000 Gallons\u003c\/strong\u003e: \u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eIdeal for large residential in-ground pools, providing efficient chlorine generation.\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"917\" data-end=\"1083\"\u003e \u003cp data-start=\"919\" data-end=\"1083\"\u003e\u003cstrong data-start=\"919\" data-end=\"965\"\u003eModular Design for Enhanced Serviceability\u003c\/strong\u003e: \u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eFeatures a modular construction that simplifies maintenance and sensor replacements, reducing service time by over 50%.\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"1085\" data-end=\"1241\"\u003e \u003cp data-start=\"1087\" data-end=\"1241\"\u003e\u003cstrong data-start=\"1087\" data-end=\"1121\"\u003eRedesigned Conductivity Sensor\u003c\/strong\u003e: \u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eProvides more accurate salt level readings, achieving 98% accuracy compared to laboratory-grade salinity meters.\u003c\/span\u003e \u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"1243\" data-end=\"1399\"\u003e \u003cp data-start=\"1245\" data-end=\"1399\"\u003e\u003cstrong data-start=\"1245\" data-end=\"1279\"\u003eEasy-to-Read LCD\/LED Interface\u003c\/strong\u003e: \u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eOffers over 20 built-in diagnostics and warnings for optimal performance monitoring.\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"1401\" data-end=\"1553\"\u003e \u003cp data-start=\"1403\" data-end=\"1553\"\u003e\u003cstrong data-start=\"1403\" data-end=\"1433\"\u003eAcid Cleaning Kit Included\u003c\/strong\u003e: \u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eFacilitates routine maintenance and prolongs cell life.\u003c\/span\u003e \u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"1555\" data-end=\"1733\"\u003e \u003cp data-start=\"1557\" data-end=\"1733\"\u003e\u003cstrong data-start=\"1557\" data-end=\"1613\"\u003eSeamless Integration with Pentair Automation Systems\u003c\/strong\u003e: \u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eCompatible with IntelliChlor Power Center and Pentair automation systems for enhanced control.\u003c\/span\u003e \u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"1735\" data-end=\"1905\"\u003e \u003cp data-start=\"1737\" data-end=\"1905\"\u003e\u003cstrong data-start=\"1737\" data-end=\"1785\"\u003eAlternative to Traditional Chlorine Handling\u003c\/strong\u003e: \u003cspan class=\"relative -mx-px my-[-0.2rem] rounded px-px py-[0.2rem] transition-colors duration-100 ease-in-out\"\u003eEliminates the need for buying, handling, storing, and carrying chlorine, reducing chemical exposure and associated risks.\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003chr data-start=\"1907\" data-end=\"1910\"\u003e \u003cp data-start=\"1912\" data-end=\"2029\"\u003eIf you need this content tailored for a specific e-commerce platform or additional details, feel free to let me know!\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eGenuine Pentair part, supplied under manufacturer part number 523735.\u003c\/li\u003e\n\u003cli\u003ePool capacity: 40K gallons.\u003c\/li\u003e\n\u003cli\u003eOutput rated to a maximum pool volume — undersizing shortens cell life.\u003c\/li\u003e\n\u003cli\u003eShips from our US warehouse with tracking on dispatch.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Pentair\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer part number:\u003c\/strong\u003e 523735\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Salt Chlorine Generators\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e New\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePool capacity:\u003c\/strong\u003e 40K gallons\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC \/ GTIN:\u003c\/strong\u003e 788379918507\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShipping weight:\u003c\/strong\u003e 3 lb\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eIs the 523735 a genuine Pentair part?\u003c\/h3\u003e\u003cp\u003eYes. The 523735 is a Pentair part supplied under that manufacturer part number. It is not a generic substitute.\u003c\/p\u003e\u003ch3\u003eHow long does a salt cell last?\u003c\/h3\u003e\u003cp\u003eSalt cells typically last three to seven years. Life depends on run hours, water temperature and keeping salt within the manufacturer's range. Low chlorine output at a correct salt reading usually means the plates are worn.\u003c\/p\u003e\u003ch3\u003eWhat salt level does the system need?\u003c\/h3\u003e\u003cp\u003eMost residential systems run between 3,000 and 3,500 ppm. Too little salt reduces output and stresses the cell; too much can trigger a fault and accelerate corrosion of nearby metal.\u003c\/p\u003e\u003ch3\u003eCan I use a salt system with any pool surface?\u003c\/h3\u003e\u003cp\u003eSalt systems work with most surfaces, but soft stone coping, untreated natural stone and some heater components are sensitive to salt. Confirm your heater has a cupro-nickel or compatible heat exchanger.\u003c\/p\u003e\u003ch3\u003eWhy has chlorine output dropped?\u003c\/h3\u003e\u003cp\u003eThe usual causes are a worn cell, scale on the plates, low salt, or cold water. Most systems reduce output below roughly 60F by design. Inspect the plates for white scale before replacing the cell.\u003c\/p\u003e\u003ch3\u003eHow do I confirm this part fits my equipment?\u003c\/h3\u003e\u003cp\u003eCheck the part number stamped on the component you are replacing, or find it on the parts schematic in your owner's manual. If the number differs or is unreadable, send us your equipment model and serial number and we will verify fitment before you order.\u003c\/p\u003e\u003ch3\u003eHow quickly does this ship?\u003c\/h3\u003e\u003cp\u003eIn-stock items ship from our US warehouse on business days. You will receive tracking by email once the order leaves the warehouse.\u003c\/p\u003e\u003ch3\u003eCan I return it if I ordered the wrong part?\u003c\/h3\u003e\u003cp\u003eUnopened, uninstalled items can be returned within 30 days. Equipment that has been installed or plumbed cannot be returned, so confirm fitment before installation.\u003c\/p\u003e\u003ch3\u003eIs this covered by a warranty?\u003c\/h3\u003e\u003cp\u003eManufacturer warranty terms vary by brand and product. Warranty claims generally require proof of purchase and, on installed equipment, evidence of professional installation.\u003c\/p\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Is the 523735 a genuine Pentair part?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. The 523735 is a Pentair part supplied under that manufacturer part number. It is not a generic substitute.\"}},{\"@type\":\"Question\",\"name\":\"How long does a salt cell last?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Salt cells typically last three to seven years. Life depends on run hours, water temperature and keeping salt within the manufacturer's range. Low chlorine output at a correct salt reading usually means the plates are worn.\"}},{\"@type\":\"Question\",\"name\":\"What salt level does the system need?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most residential systems run between 3,000 and 3,500 ppm. Too little salt reduces output and stresses the cell; too much can trigger a fault and accelerate corrosion of nearby metal.\"}},{\"@type\":\"Question\",\"name\":\"Can I use a salt system with any pool surface?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Salt systems work with most surfaces, but soft stone coping, untreated natural stone and some heater components are sensitive to salt. 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You will receive tracking by email once the order leaves the warehouse.\"}},{\"@type\":\"Question\",\"name\":\"Can I return it if I ordered the wrong part?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Unopened, uninstalled items can be returned within 30 days. Equipment that has been installed or plumbed cannot be returned, so confirm fitment before installation.\"}},{\"@type\":\"Question\",\"name\":\"Is this covered by a warranty?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Manufacturer warranty terms vary by brand and product. 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