Pentair 520722 IntelliChlor System Transformer — 115/230V to 22/39V, EasyTouch & IntelliTouch, OEM
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The Pentair 520722 IntelliChlor System Transformer is the genuine OEM transformer that supplies low-voltage power to Pentair automation panels running an IntelliChlor salt chlorine generator. It converts 115V or 230V input to the 22V/39V output the control and salt system require. When a panel goes dark, the cell loses power, or operation turns intermittent, a failed transformer is a common cause.
Key Features
- Direct OEM replacement: Built to Pentair specification for correct voltage and fit.
- Dual input voltage: Accepts 115V or 230V supply.
- 22V/39V output: Supplies the control system and IntelliChlor salt generator.
- Fixes common faults: Addresses no display, no cell power and erratic operation.
- Targeted repair: Replaces just the transformer instead of a whole power centre.
- Cross-references: Supersedes PAC-451-0722, 626570 and 9237-150 — order by 520722.
Specifications
- Part Number: 520722
- Type: System transformer
- Input: 115V / 230V
- Output: 22V / 39V
- Application: IntelliChlor salt system in EasyTouch and IntelliTouch panels (before change date)
- Supplied As: Transformer only — no enclosure or panel
- Brand: Pentair (Genuine OEM)
Frequently Asked Questions
How do I know the transformer is my problem?
Typical symptoms are a dead control panel, an IntelliChlor cell with no power, or intermittent operation. Confirm by matching the part number on your existing transformer.
Is this the whole power centre?
No. This is the transformer only — not the automation panel or power centre.
What does "before change date" mean?
Pentair revised the load centre design partway through production. This transformer fits the earlier version; later systems use 521233. Match your existing part number before ordering.
Will it work with any IntelliChlor cell?
It powers IntelliChlor setups in compatible automation panels that specify part 520722.
What other numbers does it replace?
Common cross-references are PAC-451-0722, 626570 and 9237-150.
Can I install this myself?
No. This is a live high-voltage component and should be installed by a licensed electrician or qualified pool technician.
Frequently asked questions
How many gallons is this salt system rated for?
The gallon rating is part of the model designation and is listed in the specification section above. Sizing up is normal practice: a cell rated above your pool volume runs fewer hours to hold the same chlorine level and generally lasts longer than one running at its limit.
What is the part number for this salt cell?
Pentair lists this salt cell under part number 520722. Quote 520722 when you cross-reference against your equipment manual, an existing part, or a parts diagram, so you are comparing the same revision.
How long does a salt chlorinator cell last?
Cell life is measured in operating hours rather than calendar years, and most residential cells give several seasons of service. Life is shortened by high cyanuric acid, low water temperature operation, scale buildup on the plates, and running the cell at a high output percentage for long periods.
How do I confirm this fits my equipment?
Match the part number stamped on the component you are replacing, or look it up in the parts list for your Pentair equipment. If your model or serial number is not named on this page, send it to us before you order and we will confirm the fit.
Do I need a matching power supply or control unit?
A cell and its power centre are matched as a pair; a cell will not generate chlorine on a power supply it was not designed for. Check whether this listing is the cell only, the power supply only, or a complete system before ordering.
Is there a warranty on this salt cell?
It carries the standard Pentair manufacturer warranty. The terms are set by Pentair, and on some equipment the coverage only applies when a licensed professional performs the installation. Keep the receipt and packaging until you have confirmed correct operation.