How to Remove and Clean Your Pool Chlorinator Salt Cell

A salt chlorinator is one of the hardest-working components of your pool system. Over time, calcium and mineral deposits can build up on the salt cell plates, reducing efficiency and making it harder for your chlorinator to produce the chlorine your pool needs.

Regular inspection and cleaning of your salt cell can help extend its lifespan, improve performance, and keep your pool sparkling clean all year round.

Why Does a Salt Cell Need Cleaning?

As water passes through the salt cell, minerals such as calcium can accumulate on the metal plates. This scale build-up restricts water flow and reduces chlorine production, often triggering warning lights or error messages on your chlorinator.

Signs your salt cell may need cleaning include:

• Low chlorine levels

• Chlorinator warning lights

• Visible white calcium deposits on the cell plates

• Reduced chlorinator efficiency

What You'll Need

Before starting, gather the following:

• Safety gloves

• Safety glasses

• Garden hose

• Plastic bucket or cleaning container

• Salt cell cleaning solution or diluted hydrochloric acid (follow manufacturer recommendations)

• Owner's manual

Step 1: Turn Off the Pool Equipment

Safety first. Turn off the pool pump and chlorinator at the power source before attempting to remove the salt cell.

Allow the system to stop completely before proceeding.

Step 2: Remove the Salt Cell

Locate the salt cell within your pool's plumbing line, usually installed after the filter and heater.

Carefully:

1. Unscrew the union fittings on either side of the cell.

2. Gently slide the cell out of the plumbing.

3. Inspect the O-rings and seals for wear or damage.

Avoid using excessive force, as this can damage the cell housing or fittings.

What If the Cell Is Stuck?

Over time, calcium deposits can cause the cell to become stuck in the housing. If you find you cannot lift the cell out after removing the unions, try this simple trick:

1. Place the cell back into position and secure in place and secure the end union nut.

2. Loosen the union nut by approximately a quarter turn in an anti-clockwise direction.

3. Turn the pool pump on briefly.

4. You should hear a small "pop" as the water pressure helps release the cell from the housing.

5. Turn the pump off immediately.

6. Finish removing the union nut and carefully lift the cell out.

This method can often save you from forcing the cell and potentially damaging the housing or fittings.

Step 3: Inspect the Cell Plates

Hold the cell up to the light and look between the plates.

If you notice white, chalky deposits or scaling, it's time for a clean.

If the plates appear relatively clean, simply rinse the cell and reinstall it.

Step 4: Rinse with a Garden Hose

Before using any cleaning solution, thoroughly rinse the cell with a garden hose.

Many light calcium deposits can be removed with water pressure alone. Never use metal tools, screwdrivers, wire brushes, or other abrasive objects to scrape the plates, as this can permanently damage the cell coating and reduce its lifespan.

Step 5: Clean the Salt Cell

If scale remains after rinsing, prepare the Saf-T-Cell solution as per manufacturer's instructions.

Place the cell in a suitable cleaning container and fill it with the Saf-T-Cell solution until the plates are submerged.

Allow it to soak for the recommended time, usually around 10  minutes.

You may notice bubbling as the solution dissolves the calcium deposits.

Once clean:

• Empty the solution safely according to local regulations.

• Thoroughly rinse the cell with fresh water.

• Inspect the plates again to ensure all scale has been removed.

Avoid over-cleaning or leaving the cell in acid for longer than recommended, as excessive exposure can shorten the life of the cell.

Step 6: Reinstall the Salt Cell

Once the cell is clean:

1. Check that the O-rings are clean and correctly positioned.

2. Reinstall the cell in the correct flow direction.

3. Tighten the unions by hand.

4. Restore power to the pump and chlorinator.

Check for leaks and ensure the system is operating normally.

How Often Should You Clean Your Salt Cell?

Most pool owners should inspect their salt cell every 2 to 3 months during the swimming season.

The frequency of cleaning depends on:

• Water hardness

• Pool usage

• Local water conditions

• Chlorinator settings

Regular water testing and balanced pool chemistry can significantly reduce calcium build-up and prolong the life of your salt cell.

Remember, inspect first and clean only when necessary. Unnecessary acid cleaning can wear the cell coating and reduce its lifespan.

A clean salt cell is essential for efficient chlorine production and healthy pool water. By taking a few minutes every couple of months to inspect and clean your chlorinator cell, you'll help maximise its performance, reduce maintenance issues, and extend the life of your equipment.

If you're unsure about cleaning your salt cell, need replacement parts, or would like advice on maintaining your chlorinator, contact our pool care experts. We're always happy to help keep your pool in perfect condition so you can spend more time enjoying your pool and less time maintaining it.