Home & Outdoors

How to Clean a Jandy Salt Cell

Your Jandy electrolytic salt cell is the heart of your salt-water pool, converting salt into natural chlorine. Over time, calcium mineral scaling builds up on the internal titanium plates, reducing chlorine production and forcing your pool pump to work harder. Regular inspection and cleaning ensure optimal chlorinator lifespan and crystal-clear pool water. This guide covers how to inspect your cell and safely perform a mild acid wash to dissolve stubborn calcium deposits.

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Primary reference: Jandy AquaPure product page and model manuals. Always check the manual for your exact model.

What you will need

  • The installation and operation manual for the exact Jandy cell
  • Fresh water and a garden hose
  • Muriatic acid only if scale remains and the manual calls for it
  • An acid-compatible plastic bucket and the correct cell plugs or stand
  • Chemical splash goggles and acid-resistant gloves
  • Protective clothing and a well-ventilated outdoor work area

Step-by-step instructions

Step 1: Identify the exact cell

Find the model number and its installation and operation manual before mixing anything. Jandy AquaPure families do not all specify the same acid dilution: for example, published instructions for an AquaPure Ei cell use one part acid to ten parts water, while some classic AquaPure manuals specify one pint of acid in two quarts of water. The exact manual takes priority over a generic ratio.

Step 2: Shut down and release pressure

Turn off the chlorinator, pump, and power at the breaker. Close any valves required by the plumbing layout and release filter pressure according to the equipment instructions. Never loosen a union on a running or pressurized system. If the electrical or plumbing isolation is unclear, use a qualified pool professional.

Step 3: Remove and inspect the cell

Disconnect the leads as the manual directs, protect the terminals, and remove the cell without losing or damaging the O-rings. Look between the plates. If they are open and free of chalky scale, do not acid-wash the cell. Repeated acid exposure consumes the plate coating and shortens cell life.

Step 4: Try fresh water first

Use a strong stream from a garden hose to dislodge loose debris. Do not use a screwdriver, wire brush, metal scraper, or pressure-washer nozzle against the plates. If water removes the deposit, rinse and reinstall the cell without acid.

Step 5: Prepare only the manual-specified acid dilution

Work outdoors with splash goggles, acid-resistant gloves, protective clothing, and an acid-compatible bucket. Measure the water first, then slowly add acid to the water—never add water to acid. Do not mix muriatic acid with chlorine, bleach, or any other pool chemical. Stop if the correct concentration, plugs, or disposal method is uncertain.

Step 6: Dissolve visible scale and rinse

Plug or position the cell exactly as its manual shows and expose only the intended plate area and time. Foaming indicates calcium scale is dissolving. Stop when foaming ends or at the manual's maximum time, whichever comes first. Drain the solution into the compatible container and rinse the cell thoroughly with fresh water.

Step 7: Reinstall and check operation

Inspect and correctly seat the O-rings, align the flow direction, hand-tighten unions, and reconnect the leads. Restore valves and power in the manufacturer's order, check carefully for leaks, and confirm the system reading. Follow the acid label and local household hazardous-waste rules for the used solution; do not pour it onto soil or into a storm drain.

Specific cleaning questions

Open a question for a concise answer about stains, odors, safety, frequency, and troubleshooting.

What acid ratio should I use for a Jandy salt cell?
Use the ratio in the manual for the exact model. Jandy families differ: AquaPure Ei instructions may specify 1 part acid to 10 parts water, while some classic AquaPure manuals specify 1 pint in 2 quarts of water. Never assume a generic ratio.
How often should I clean a Jandy salt cell?
Inspect it at the interval in the model manual and clean only when visible scale or debris remains. Acid-washing a clean cell does not improve it and gradually damages the catalytic plate coating. Frequent scaling is a reason to check pool balance, not to schedule stronger washes.
Can I scrape calcium from the plates?
Do not use metal tools, wire brushes, or anything that can scratch or bend the plates. Start with a garden-hose stream. If scale remains, use only the model's specified acid procedure and exposure time.
Why is the acid solution not foaming?
Little or no foaming usually means there is little calcium carbonate to dissolve. Stop the acid exposure, rinse the cell, and investigate wiring, sensors, salinity, water temperature, or a worn cell if an error continues.
Can I use vinegar instead of muriatic acid?
Do not substitute a cleaner unless the exact Jandy manual approves it. A weak household acid may be ineffective on heavy scale, while an unapproved concentration or additive can damage the cell. Follow the manual and chemical label.
How long can a Jandy cell stay in acid?
Only for the time specified in the exact manual and no longer than its stated maximum. Stop sooner when foaming ends. Longer or repeated exposure can strip the plate coating and reduce chlorine production.
How should used salt-cell acid be disposed of?
Keep it in an acid-compatible container and follow the product label and local household hazardous-waste rules. Never pour it into a storm drain, onto soil, or near chlorine products. Local requirements differ, so a universal drain-disposal instruction is unsafe.
Why does scale return quickly after cleaning?
Rapid recurrence usually points to water balance—commonly elevated pH, calcium saturation, or alkalinity—or an equipment issue. Test the pool with a reliable method and have a pool professional review repeated scaling rather than increasing acid strength.