Pentair Pass-Through Cell for IntelliChlor — Winter/Start-Up Bypass Model 520588, Non-Electrolytic Protection

Pentair's Pass-Through Cell for IntelliChlor is a factory-style dummy bypass cell used during winterizing or start-up to protect and maintain your pool automation system.

This replacement pass-through cell (Pentair model 520588) is designed to work with IntelliChlor salt chlorination and automation systems, giving technicians and pool owners a safe, simple way to route water when the primary electrolytic cell is offline. It attaches in place of the active cell to preserve plumbing alignment and electrical isolation while the system is winterized or being serviced.

How does this pass-through cell help during winterizing?

When you winterize a salt system, removing the active cell avoids freeze damage and extends its service life. The Pentair pass-through cell fills the physical and hydraulic spot of the active unit without energizing the electrolytic components, ensuring plumbing stays intact and leak-free.

• Direct fit for IntelliChlor systems to maintain plumbing continuity.
• Non-electrolytic design prevents electrical exposure during storage.
• Durable materials resist seasonal temperature changes.

Can I use the pass-through cell for system start-up or repairs?

Yes. Install the pass-through cell while performing diagnostics or repairs to bypass the electrolyte cell safely. It lets you run water through the system for pressure testing or filtration work without operating the chlorinator.

• Enables pressure testing and filter backwash without energizing the chlorinator.
• Simplifies component swaps and service procedures.
• Helps technicians isolate problems without removing plumbing fittings.

What compatibility and installation details should I know?

The part is specified for IntelliChlor-family equipment and matches factory plumbing dimensions for a straightforward swap. Installation is generally mechanical — remove the electrolytic cell and fit this bypass cell in its place, following Pentair torque and sealing recommendations.

• Model number: Pentair 520588, for IntelliChlor systems.
• Direct replacement form factor to preserve alignment and seals.
• Basic hand tools required; follow manufacturer installation steps.

Will this affect my automation or control settings?

No electrical controls are active when the pass-through cell is installed; it is a mechanical bypass only. The automation head and control modules remain installed but will not engage chlorination until the active electrolytic cell is reinstalled and the system is powered and configured.

• Does not activate chlorination functions while in place.
• Allows continuing use of filters and pumps as needed during maintenance.
• Prevents unnecessary alarms tied to a missing electrolytic cell.

Who this is for: Pool service professionals and conscientious pool owners who use Pentair IntelliChlor systems and need a purpose-built bypass for winter storage, maintenance, or diagnostic work. If you plan to remove the electrolytic cell for any season or service reason, this Pentair pass-through cell provides a secure, compatible solution to maintain plumbing integrity and simplify reassembly.