Salt Cell Maintenance Guide

Why Salt Cell Maintenance Matters

Inside the salt cell, a low-voltage electrical current passes through the titanium plates and converts dissolved salt into chlorine. During this process, calcium scale can form on the plates, especially when pH, alkalinity, calcium hardness, or salt levels are outside the recommended range.

If scale is allowed to build up, it can:

• Reduce chlorine output
• Make the cell work harder than necessary
• Increase electrical load and heat
• Trigger low salt or flow warnings
• Shorten the working life of the cell

The aim is simple: keep the water balanced, inspect the cell regularly, and clean only when scale is visible. This helps your chlorinator keep doing its job with less effort.

Recommended Water Balance for AquaSolis Chlorinators

Water balance is the most important part of salt cell maintenance. When your pool water is kept within the correct range, the cell can produce chlorine efficiently without excessive scale, heat, or strain.

For AquaSolis salt and mineral chlorinators, use the following guide:

Adding Salt Correctly

Correct salt handling helps protect your pool surface, pump, filter, and chlorinator cell.

• Add salt to the shallow end of the pool
• Brush the pool floor to help dissolve the salt
• Run the pump to circulate the water
• Do not allow salt to sit undissolved on the pool surface
• Never add salt directly into the skimmer box

For AquaSolis standard salt models, the general starting guide is approximately 3.5 kg of pool salt per 1000 litres of pool water. For AquaSolis Low Salt models, the general guide is approximately 1.5 kg per 1000 litres.

If using mineral or magnesium chloride blends, you may need around 20–30% more product to achieve the correct operating level.

Practical Salt Cell Maintenance Schedule

A simple routine is enough for most pools. The key is to inspect regularly and clean only when needed.

How to Inspect Your Salt Cell

Inspecting the cell helps you decide whether cleaning is actually required. Clear plates do not need cleaning.

1. Switch the chlorinator timer to OFF
2. Turn off power to the pump and chlorinator
3. Unscrew the cell locking ring or unions
4. Remove the electrode carefully
5. Look through the plates using daylight or a torch

What to look for:

• White, chalky or flaky deposits: calcium scale is present
• Clear plates: no cleaning is required
• Debris lodged between plates: rinse carefully with fresh water
• Worn or damaged coating: the cell may be approaching replacement

This example shows the difference between a heavily scaled salt cell and clean plates. If your cell looks like the clean example, refit it and resume normal operation. If white calcium scale is visible, cleaning may be required.

Checking the Cell Connections

Any time the cell is removed, also check the plug, terminals, lead, and cable condition. A clean, secure connection helps prevent heat build-up and unreliable operation.

• Terminals should be clean and free from corrosion
• The cell plug should fit firmly into the cell cap
• There should be no damaged, loose, or exposed wiring

How to Clean Your Salt Cell Safely

AquaSolis self-cleaning chlorinators use reverse-polarity technology to help reduce calcium build-up. In hard-water areas or pools with unbalanced water, occasional cleaning may still be required.

Step 1: Turn the System Off

Switch the timer from AUTO to OFF so the pump and chlorinator do not start while the cell is removed.

Step 2: Remove and Inspect the Cell

Unscrew the cell locking ring by hand and remove the electrode carefully. Do not use tools to overtighten or force plastic fittings.

Step 3: Rinse First

If the build-up is light, rinse the cell with clean water. Do not scratch, scrape, bend, or force anything between the titanium plates.

Step 4: Use Cell Cleaner if Scale Remains

If calcium build-up is visible, use a dedicated salt chlorinator cell cleaner and follow the product directions.

Step 5: Acid Cleaning if Required

If using hydrochloric acid, mix 1 part acid to 10 parts water. For heavy calcium build-up, follow the cell cleaner instructions or seek advice from a pool professional. Always follow chemical safety instructions.

• Always add acid to water, never water to acid
• Wear eye protection, gloves, mask, and enclosed footwear
• Allow the solution to dissolve calcium deposits for around 10 minutes
• Rinse the electrode thoroughly with clean water
• Dispose of used cleaning solution responsibly and never into stormwater drains

Step 6: Refit the Cell

• Check that the O-ring is clean and correctly seated
• Use silicone grease on the O-ring if required
• Do not use petroleum-based jelly
• Refit the electrode into the cell housing
• Hand-tighten the cell locking ring
• Reconnect the cell lead firmly to prevent water entry

How to Extend Salt Cell Life

Salt cell life is influenced by water balance, salt level, run time, output level, calcium build-up, and electrical connection quality. These practical habits help reduce unnecessary wear:

1. Keep pH within range so chlorine works efficiently and scale forms more slowly
2. Maintain the correct salt level for your AquaSolis model
3. Control calcium hardness, especially in hard-water areas
4. Use stabiliser correctly to protect chlorine from sunlight
5. Match output and run time to the season instead of running the cell harder than needed
6. Inspect the cell regularly and clean only when scale is visible
7. Keep cell connections clean and secure to prevent heat and unreliable operation
8. Keep the power pack ventilated and away from chemical fumes, fertilisers, and enclosed corrosive spaces

These steps help the cell produce chlorine steadily while reducing scale, heat, and premature coating wear.

When to Use BOOST Mode

BOOST mode is helpful when the pool needs extra chlorine production for a short period. It is useful after heavy swimming, hot weather, rain, or when the pool has had a higher-than-usual bather load.

BOOST should be used as short-term support, not as a replacement for regular water balance. If your pool frequently needs boosting, test the water, check stabiliser, review run time, and inspect the cell.

When to Replace Your Salt Cell

Salt cells are consumable components. Even with good care, the coating on the plates gradually wears over time. Replacement becomes the practical option when normal maintenance no longer restores chlorine production.

You may need a replacement salt cell if:

• Chlorine output remains low even with balanced water and a clean cell
• Low salt warnings continue after the salt level has been professionally confirmed
• The plate coating appears worn, patchy, or damaged
• The cell works in one direction but not the other
• The cell is in the later stage of its expected service life

When choosing a replacement cell, match the correct brand, model, output, plate count, and self-cleaning or non-self-cleaning type.