Zodiac - LM2-40 electrode cell - R0759500

Zodiac – LM2-40 electrode cell – R0759500

The Zodiac LM2-40 electrode cell (R0759500) is the original replacement electrolytic cell for the Zodiac Clearwater LM2 salt water chlorinator system. This complete electrode assembly includes the full cell body, making it a straightforward like-for-like swap for worn or depleted cells in existing LM2 installations. The electrolytic cell is the core working component of a salt chlorinator: it uses low-voltage direct current to split dissolved salt (sodium chloride) in the pool water into free chlorine, which sanitises the pool without the need for manually adding traditional chlorine products. Over time, the electrode plates inside the cell wear due to the electrolytic process, reducing chlorine output. Replacing the cell with a genuine Zodiac OEM part restores the system to its original performance specification.

Technical characteristics and compatibility

The LM2-40 cell is designed specifically for the Zodiac Clearwater LM2 salt chlorinator platform. The complete cell body is included in the replacement package, which simplifies the installation process — no specialist tools or additional housing parts are required beyond standard plumbing connections. The cell integrates directly with the LM2 power PCB (R0759500 series) and the LM2 control board, ensuring full electronic compatibility with the existing system’s automatic self-cleaning, flow detection, and chlorine output adjustment features. The electrode plates are manufactured to Zodiac’s original specification, delivering consistent and reliable chlorine production when the system is operated within its designed salt concentration range. The LM2-40 designation indicates a cell rated for pools in the medium-to-large residential category, consistent with the capacity range associated with the LM2 product line.

Suitability and buying guidance

This electrode cell is intended exclusively for pool owners who have an existing Zodiac Clearwater LM2 salt chlorinator installed. It is the correct genuine OEM replacement when the cell has reached the end of its service life, is producing insufficient chlorine despite correct salt levels and clean cell plates, or has been physically damaged. Using a genuine Zodiac replacement cell rather than a generic alternative ensures full compatibility with the LM2 control electronics and maintains the manufacturer’s expected chlorination performance. This part is suitable for in-ground and above-ground pools serviced by the LM2 system. If you are unsure whether your unit requires a cell replacement or a control board replacement, check for fault indicators on your LM2 display panel before ordering, as both components have separate replacement references in the Zodiac LM2 spare parts range.