What is the date code on a Pentair serial number?
Pentair IntelliChlor PLUS40 40K Salt Cell & Power Supply Bundle, 523735-EC 520556, Plus 40
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Open Apr 01, 2026 - 12:46 PM
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Apr 01, 2026 - 12:46 PM
The date code on a Pentair serial number typically consists of the first four digits. The first two digits indicate the year, and the next two digits indicate the week of manufacture. For example, a serial number starting with "2345" means the product was made in the 45th week of 2023.
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