A salt chlorinator uses the salt in the pool water to produce disinfection as the water passes through an electrolytic cell. The system reduces the need for manual chlorine dosing, but the pool still requires the correct pH, circulation, testing, and regular maintenance.
Short answer: The pump forces water through the cell, electrical current converts chloride ions into active chlorine, and the substance then returns to chloride in a cycle. Salt mainly needs to be topped up when water leaves the pool.
Parts of the system
- Control unit that regulates production
- Electrolytic cell where the conversion takes place
- Flow switch that prevents operation without water flow
- Sensors or manual tests for control
From salt to disinfection
When the circulation pump is running, salt water is routed through the cell. There, active disinfection is produced that helps break down microorganisms and organic contaminants. Production is adjusted according to water temperature, bathing load, and how long circulation has been running.
Salt chlorination does not mean a chlorine-free pool. The difference is how the disinfection is produced and dosed.
pH and salt level must be monitored
Check the salt level against your equipment's operating range. Too low a level can result in weak production or alarms, while too high a level may require a controlled water replacement. pH affects how effective the disinfection is and should be measured independently of what the control unit shows.
Maintenance of the electrolytic cell
Inspect the cell according to the manufacturer's interval. Scale buildup impairs function, but unnecessarily strong or frequent acid cleaning can shorten its lifespan. Also check flow, cables, and any alarms before increasing production.
Frequently asked questions
Does the salt disappear when water evaporates?
No. The salt remains when clean water evaporates. The level drops when salt water is backwashed, splashed out, or drained.
Can the system take care of the pool completely automatically?
No. Filtration, pH, cleaning, and manual control tests are still needed even with automatic production.
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