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Home Pool Salt Cell Replacements Pentair Replacement Cells Pentair IntelliChlor Flow Switch Replacement Kit | 520736
NOTICE: The pool & spa industry continues to face industry-wide shortages on many products that most vendors expect to last late into 2022. We're allowing items to be purchased so that customers who choose to wait will have their order shipped when product is available. Most vendors are not providing any ETA on when items will be available. WE WILL EMAIL YOU RIGHT AWAY IF YOUR ITEM IS BACKORDERED. 

Pentair IntelliChlor Flow Switch Replacement Kit | 520736

Pentair IntelliChlor Flow Switch Replacement Kit | 520736 Pentair IntelliChlor Flow Switch Replacement Kit | 520736 Pentair IntelliChlor Flow Switch Replacement Kit | 520736 Pentair IntelliChlor Flow Switch Replacement Kit | 520736 Pentair IntelliChlor Flow Switch Replacement Kit | 520736

Shipping Flat Rate Shipping $10.95
Platinum Preferred Manufacturer
  • Replacement Kit includes flow switch assembly and two wire caps
  • Replace flow switch without having to replace entire cell
Q & A


Pentair IntelliChlor Salt Generator Replacement Cell | 40,000 Gallons IC40 | EC-520555
Pentair IntelliChlor IC40 Salt Cell Only - 40,000 Gallons - EC-520555
Replacement Parts

Pentair Intellichlor Salt Chlorine Generator | 20,000 Gallon Complete System | IC20KIT
Intellichlor Salt Chlorine Generator | 20K Gallon Complete System IC20KIT
Replacement Parts

Pentair IntelliChlor Power Center Only for use with IC20, IC40, & IC60P Salt Cells | EC-520556
Pentair IntelliChlor Power Center Only for use with IC20, IC40, & IC60P Salt Cells | EC-520556
Replacement Parts

  • Pool Style 1# Salt Cell Cleaner for Cleaning Salt Water Generator Cells | 774263
    1# Salt Cell Cleaner for Salt Water Generator Cells

  • Pentair Intellichlor Acid Cleaning Kit | 520670
    Pentair Intellichlor Acid Cleaning Kit | 520670

Intellichlor Flow Switch Replacement Kit Instructions:
  1. Switch OFF power to the pool pump and the Intellichlor cell before starting
  2. Remove the flow switch from the IntelliChlor cell
    1. Using a small Phillips Screwdriver, remove the flow switch cover screw, then remove the cover from the cell
    2. Loosen the flow switch cable that is wrapped around the switch nut.  Note the direction of the arrows on top of the switch nut.
    3. Cut the cable close to the switch to allow enough wire for the new switch cable to be connected to.
    4. Using a flat 1/2" (30mm) wrench carefully unscrew the flow switch assembly until the switch can e removed from the cell.  Be careful not to damage the cell plastic coupling with the edge of the wrench.
  3. Install the replacement flow switch
    1. Insert the flow switch into threaded hole in the cell and hand tighten the switch as much as possible
    2. Using a flat 1/2" (30mm) wrench carefully tighten the flow switch assembly until the switch thread nearly bottoms out.
    3. Tighten the switch nut until the arrows on the top of the switch nut are pointing in the flow direction and the center arrow is aligned in the center position.
    4. Strip back the two wires on the replacement flow switch cable and the switch wire that was cut.
    5. Match each of the wire colors and twist the wire together.  Place a wire cap on each of the wires.  Wrap the excess wire around the flow switch nut.
    6. Replace the switch cover and secure it with the small Phillips screw.

    The IntelliChlor is now ready for operation!  Switch power on to pool pump and IntelliChlor cell.

Brand: Pentair
Q & A
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Browse 8 questions Browse 8 questions and 5 answers
All lights are green indicating full flow, salt and cell function are good, but there is no chlorine output. The pentair IC40 cell may be three years old.
Don't understand why it is not working ?

A shopper on Jul 8, 2016
what problems would cause the need to replace the fiow switch?
harold w on May 15, 2017
BEST ANSWER: I had to replace my flow switch because the metal activation tab had corroded off. I noticed the flow indicator light was red and inspected the switch (required removing the Chlorinator) but was un-aware of the missing tab until I viewed a picture of the flow switch part. I assume I used to strong an acid wash on my periodic cleaning or a piece of debris damaged the switch. Either way the replacement only took about 15 mins. Read the directions thoroughly before starting.
I have an IC40 and the cold water led is on, but the water is well above required range. It worked perfectly when we removed it for winter. What could be the problem?
Art R on Apr 17, 2017
how to connect switch to cell?
frank c on Sep 4, 2016
BEST ANSWER: You should read the directions thoroughly before starting. In addition to the physical installation and proper alignment you will also (probably) need to cut the electrical lead from the cell to the old switch, being careful to leave sufficient wire to allow easy connection to the replacement leads. The water proof electrical connects make the electrical hookup easy as long as you can match color to color. Remember you can always shorten your wires. There is usually room for an extra 8 to 10 inches under the cover.
how do you know if he flow switch is bad?
A shopper on Mar 25, 2019
BEST ANSWER: Remove flow switch.Tie Elastic band from flapper to post . Replace switch if flow lite is red switch is faulty. If lite is green switch is OK.
is this the replacement flow switch for an ic40? I have the model number saying FS-22-T.
lisa m on Jul 10, 2016
BEST ANSWER: Yes, this is the flow switch I purchased for my IC40, and it resolved my problem.
Is this for the I chlor 15?
Eva D on May 27, 2021
Do you send to Mexico by DHL or FedEx? Just lost 1 flow switch in the mail last month
A shopper on Oct 3, 2019
2.5 / 5.0
2 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Rated 4 out of 5
My flow switch went out on my IC40 cell. This was a direct replacement. Works perfect.
January 9, 2015
Rated 1 out of 5
Wrong part
I received the wrong part, I received 520734 instead of 520736. I notified the company on Friday but have yet to get an answer
May 31, 2020
over 2 years ago
Adobe Acrobat PDF Installation Instructions

Register your Pentair product online at www.pentair.com.

You've always been able to count on the quality and long service life of Pentair products. Pentair uses state of the art workmanship, materials and manufacturing processes to create the most innovative pool and spa equipment anywhere. And now Pentair products can deliver even more value and peace of mind, because Pentair offers extended warranty coverage on select products that are installed by a qualified installer*.
While the majority of Pentair products are covered by a sixty- (60) day warranty, a select number of products qualify for extended warranty coverage.
Select Bundled Products: applies to purchases and qualified installation of a minimum of a pump and filter, and one or more of the following: heaters, heat pumps, control systems, automatic cleaners, lighting, salt chlorine generators or UV sterilizer**
*Note: Qualified Installer - Defined as a licensed professional who charges a fee for his services, and possesses a business license, contractor's license and/or resale permit. Common examples of a "qualified installer" include: Swimming Pool, Home Repair or Landscape Professional; Plumber or Electrician; General Contractor; Heating and Air Conditioning Specialist.
**Note: Bundled products - must be purchased on the same invoice and installed at the same time. If any product within a bundle is ineligible for the bundled warranty coverage then all products within the same bundle will be disqualified from receiving the three (3) year extended warranty coverage for bundled products.
TradeGrade products must be purchased from a retail store (brick & mortar), pool builder or pool service company to receive a one-year, two-year or three-year warranty. If purchased online will only receive a sixty-day limited warranty. View the list of TradeGrade Products.
Ecommerce (EC) products: Products purchased from an Authorized Pentair Online Reseller (products beginning with EC-) receive a one (1) year (parts only) warranty from the date of purchase. The exceptions are: IntelliChlor cells and IntelliFlo SVRS pumps which receive a two (2) year warranty. EC products are not eligible for the bundled three (3) year extended warranty.
Visit www.pentair.com to submit your product warranty registration.
This information was updated on 11/19/2021. For the most current information and full warranty policy please visit www.pentair.com/warranty.

 Adobe Acrobat PDF Warranty Information
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