how to clean chlorinator cell

Daniel Parker

3 min read

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12-01-2025

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Saltwater chlorinators are a convenient way to keep your pool clean and sanitized. However, their efficiency depends heavily on the cleanliness of the chlorinator cell. Over time, scale and other mineral deposits build up on the cell's plates, reducing its effectiveness and potentially damaging the unit. Regular cleaning is essential to ensure your chlorinator runs smoothly and extends its lifespan. This guide will walk you through how to clean your chlorinator cell effectively and safely.

Understanding Your Chlorinator Cell

Before you begin cleaning, familiarize yourself with your specific chlorinator model. Consult your owner's manual for detailed instructions and safety precautions. Most chlorinators require the power to be turned off and disconnected before cleaning. This is crucial for your safety. Ignoring this step could lead to electric shock.

Identifying the Signs of a Dirty Chlorinator Cell:

• Reduced chlorine production: Noticeably lower chlorine levels in your pool despite the chlorinator running.
• Error messages: Your chlorinator may display an error code indicating low cell output or a cleaning requirement.
• Visible scaling: A white, chalky buildup on the cell's plates is a clear sign of mineral deposits.
• Chlorine smell reduction: A noticeable decrease or absence of chlorine smell, indicating reduced sanitation.

How to Clean Your Chlorinator Cell: A Step-by-Step Process

The cleaning process varies slightly depending on the severity of the buildup. For minor scaling, a simple soak may suffice. For heavier buildup, you may need more aggressive cleaning methods.

Tools you'll need:

• Garden hose with a spray nozzle
• Soft bristle brush (avoid metal brushes, which can scratch the plates)
• Mild acid solution (following manufacturer recommendations – typically muriatic acid diluted with water, always add acid to water, never water to acid)
• Protective gear: rubber gloves, eye protection, and old clothes.
• Plastic container large enough to submerge the cell.

Step 1: Power Down and Disconnect

This is the most crucial step. Turn off the power to your chlorinator at the breaker box. Then, disconnect the cell from the chlorinator unit. Double-check that the power is off before proceeding.

Step 2: Rinse the Cell

Use a garden hose to thoroughly rinse away loose debris and scale from the cell's surface. Focus on removing as much loose material as possible before proceeding to a chemical cleaning.

Step 3: Prepare the Cleaning Solution (For moderate to heavy scaling)

Carefully follow the manufacturer's instructions for preparing the cleaning solution. This usually involves diluting muriatic acid with water in a specific ratio. Always add acid to water slowly and carefully, as this reaction generates heat. Work in a well-ventilated area.

Step 4: Soak the Cell

Submerge the chlorinator cell in the prepared cleaning solution, ensuring it's completely covered. Let it soak for the recommended time, typically 30-60 minutes. Check your manufacturer's instructions for specifics.

Step 5: Scrub the Cell

After soaking, carefully remove the cell from the solution. Use a soft-bristled brush to gently scrub away any remaining scale or deposits. Avoid excessive scrubbing, as it could damage the plates.

Step 6: Rinse Thoroughly

Rinse the cell thoroughly with clean water to remove all traces of the cleaning solution. Ensure all acid is removed before reinstallation.

Step 7: Inspect the Cell

Carefully inspect the cell's plates for any damage. If there are any cracks or significant damage, the cell may need to be replaced.

Step 8: Reinstall and Power Up

Once the cell is completely dry, reinstall it into the chlorinator unit and restore the power at the breaker box.

Maintaining Your Chlorinator Cell

Regular cleaning is key to maintaining your chlorinator cell's efficiency. Aim to clean it every 3-6 months, or more frequently depending on your pool's usage and water conditions.

Tips for Preventing Buildup:

• Regular pool maintenance: Proper water chemistry, including balanced pH and alkalinity levels, minimizes scaling.
• Backwash your filter frequently: This helps remove debris that can contribute to scaling.
• Use a high-quality salt: Choosing the right salt can minimize mineral deposits.

By following these steps and practicing regular maintenance, you can keep your chlorinator cell clean and ensure it provides years of reliable service. Remember always to prioritize safety and consult your chlorinator's manual for specific instructions. If you're unsure about any part of the process, it's always best to consult a pool professional.