Restore Chlorine Output and Extend Salt Cell Life

Salt chlorine generators rely on clean cell plates to produce chlorine efficiently. Over time, calcium scale and mineral buildup accumulate on the cell blades, reducing chlorine output and increasing system strain. The Swimables IntelliChlor® Style Acid Washing Kit (SW-75-260) is a purpose-built service kit designed to safely and effectively clean Pentair IntelliChlor-style salt cells.

This kit replaces Pentair OEM part number 520670 and provides the proper fittings needed to perform an acid wash on compatible IntelliChlor cells. By allowing controlled, targeted cleaning of the cell plates, this kit helps restore chlorine production, stabilize system performance, and extend the usable life of the salt cell.

This is a salt system service accessory, not a pool chemical or general plumbing item.

What an IntelliChlor Acid Washing Kit Does

An acid washing kit allows technicians or experienced pool owners to safely flush scale buildup from inside a salt cell. The kit creates a sealed chamber so diluted acid can contact only the cell plates—without damaging surrounding equipment.

A properly used acid washing kit helps:

• Remove calcium and mineral scale

• Restore chlorine output

• Improve salt system efficiency

• Reduce error codes related to low output

• Extend salt cell lifespan

Without periodic cleaning, scale buildup can permanently damage cell blades, leading to costly replacements.

For related system components, this kit is commonly used alongside items in the Salt Chlorine Generator Parts Collection.

Direct Replacement for Pentair 520670

The Swimables SW-75-260 is engineered as a Pentair IntelliChlor-style replacement for OEM part 520670, ensuring proper fit and safe operation during cell cleaning.

Compatibility highlights:

• Replaces Pentair 520670

• Designed for Pentair IntelliChlor-style salt cells

• Proper thread depth and sealing surface

• Allows vertical acid soak for even cleaning

Using the correct acid washing kit is critical. Improvised fittings or incorrect caps can cause leaks, spills, or uneven cleaning.

Why Salt Cells Require Periodic Acid Washing

Salt cells operate by passing electrical current through metal plates submerged in water. This process naturally attracts calcium and mineral deposits, especially in areas with hard water.

Over time, scale buildup can cause:

• Reduced chlorine production

• “Low Output” or “Check Cell” warnings

• Increased power draw

• Inconsistent sanitizer levels

• Premature cell failure

Regular inspection and controlled acid washing help prevent these issues and maintain reliable sanitation.

For complete salt system care, this kit complements products found in the Saltwater Pool Systems Collection.

Designed for Safe, Controlled Cleaning

The Swimables IntelliChlor-style acid washing kit is designed to contain the cleaning solution within the cell housing, minimizing exposure and reducing risk during service.

Design features include:

• Secure sealing to prevent leaks

• Stable vertical orientation during cleaning

• Compatibility with standard service procedures

• Durable materials resistant to diluted acid exposure

This controlled approach is far safer and more effective than attempting to soak or rinse a cell without proper fittings.

Common Signs a Salt Cell Needs Cleaning

An acid wash is typically recommended when you observe:

• Reduced chlorine output despite proper salt levels

• Visible scale on cell plates

• System error codes related to cell performance

• Cloudy water with adequate chemistry

• Rising calcium hardness over time

Salt cells should always be visually inspected before acid washing—light scale may be removed with water rinsing alone.

Recommended Service Intervals

Acid washing frequency depends on water hardness, usage, and system runtime. In most environments:

• Inspect salt cells every 3–4 months

• Acid wash only when scale is visible

• Avoid excessive acid washing to prevent plate damage

Using a proper kit like the SW-75-260 ensures cleaning is effective without being overly aggressive.

For balanced water chemistry, salt system maintenance should be paired with routine testing using tools from the Pool Water Testing Collection.

Installation and Use Overview

The Swimables SW-75-260 kit is typically used during routine salt system maintenance.

General Use Steps:

1. Power down the salt system

2. Remove the salt cell from plumbing

3. Attach the acid washing kit to the cell

4. Prepare a diluted acid solution per manufacturer guidelines

5. Fill the cell chamber and allow scale to dissolve

6. Rinse thoroughly and reinstall the cell

Professional handling and proper safety precautions are strongly recommended when working with acid.

Ideal for Service Professionals and Experienced Pool Owners

This acid washing kit is best suited for:

• Pool service technicians

• Experienced pool owners familiar with salt systems

• Routine salt cell maintenance

• Preventative care on IntelliChlor systems

Improper use or excessive acid exposure can damage salt cells, so users should always follow recommended procedures.

Why Choose Swimables Replacement Service Kits

Swimables service accessories are designed to match OEM specifications while providing a cost-effective alternative to factory parts.

Benefits include:

• Accurate OEM cross-referencing

• Pool-industry-specific design

• Reliable fit and performance

• Compatibility with standard service practices

The SW-75-260 kit is a trusted solution for maintaining IntelliChlor-style salt systems.

Buy with Confidence from Benchmark Pool Supply

At Benchmark Pool Supply, we stock pool-specific service parts designed to maintain equipment performance—not generic substitutes. The Swimables IntelliChlor® Style Acid Washing Kit (SW-75-260) is selected for proper fit, safe operation, and long-term value.

When you purchase from Benchmark Pool Supply, you receive:

• Pool-industry-specific service accessories

• Clear OEM cross-reference information

• Fast shipping or convenient local pickup

• Support from knowledgeable pool professionals

We help you maintain salt systems properly and avoid unnecessary cell replacement costs.