POWERclean Ultra Off-Line Chlorinator w/ Clear Glass Lid - 25280-300-000



Part # 25280-300-000

By Custom Molded Products

  5 Average  



Part # 25280-300-000

Alternate Part #'s 25280-300-000, 25280300000

Product Description

POWERclean ULTRA Off-Line Chlorinator

  • Designed to treat pools from 5,000 - 50,000 gallons
  • Holds (12) 3” Tablets or 5lbs. of 1” Tablets
  • Installs easily onto existing equipment sets
  • Larger hose than comparable brands
  • Comes with two mounting brackets and tubing as well as 3/4” fittings for hard plumbing.

?     Asked on 1/28/2019 by Mark Ayash

I am looking at off-line chlorinator and was have had a couple Hayward fail and heard about these..Would this be a good fit for a in-ground pool around 20K.

A  Answered on 1/28/2019 by InyoPools Product Specialist Lennox H.

Hi, Mark. Yes, this unit will be sufficient for a 20K in-ground pool. 

?     Asked on 6/28/2016 by

Which is better in controlling the pool chlorine level? In-line or off-line? I have a two speed pump that runs all the time. Thanks.

A  Answered on 6/29/2016 by InyoPools Product Specialist Alan M.

There is not an advantage to controlling chlorine with either the in-line or off-line models. The chlorine levels are regulated by the control knobs that increase or decrease the amount of chlorine administered.

?     Asked on 5/29/2016 by Barbara

I have a Hayward chlorinator and have had lid issues with all of them... how is this unit different and will I have the same issues. The lid or cap will not close and water leaks out of it.

A  Answered on 5/30/2016 by InyoPools Product Specialist Alex V.

Barbara, Have you replaced the o-ring? The o-ring is usually the cause of leaks. You will have the same issue regardless of manufacturer since chlorine is very corrosive.

?     Asked on 4/8/2016 by Bob

Does this unit use the same size tubing and fittings as the Hayward CL220 which is what I have now but am not happy with?

A  Answered on 4/8/2016 by InyoPools Product Specialist Alan M.

Hi Bob, The POWERclean Ultra Off-Line Chlorinator uses larger hose than comparable brands like the HaywardCL220. The Chlorinator hoses are 1/4" larger.

?     Asked on 4/2/2016 by David

The control valve has indicators of 0, .5 and 1. What is the correlation to how much chlorine is sent to the pool?

A  Answered on 4/4/2016 by InyoPools Product Specialist Hector F.

The most standard way to use the usual 99 percent trichlor tablet is based off of the 1 tablet per 5 thousand gallon ratio. As long as you follow that standard then you can have the chlorinator at max output which in this case is 5.

?     Asked on 9/2/2015 by Carolyn Williams

How much larger are the hoses than th Rainbow 300C

A  Answered on 9/7/2015 by InyoPools Product Specialist Lennox H.

Hi Carolyn, The POWERclean Ultra Off-Line Chlorinator hoses are 1/4" larger than the Rainbow 300C Chlorinator.


Est. Repair Time

Less than 1 hr

Tools Needed

Screwdriver, Nut Drivers, Pliers, Drill


Written on 3/25/2019 by Guest

1) Place unit on pad near the pump for permanent location
2) Mark where 4 holes are to be drilled into concrete pad
3) Use concrete drill bit size appropriate for the concrete screws you use
4) After drilling holes, place base over holes making sure that it is facing in the proper direction to allow the chlorinator to flow properly
5) Locate where you are to attach the lines into your existing plumbing.
6) Using a 3/4" drill, drill the respective holes, making sure that you clear all the debris away from hole and any that fell inside the pipe.
7) Attach the heavy duty clamps provided. I used the additional clamp adapters so that it would fit over the smaller pipe.
8) Attach the lines as instructed, making sure that you don't overtighten anything.
9) As a final note, make sure that the cap on the chlorinator has enough clearance from your pipes, that you can unscrew it without having to take everything apart. I made the mistake, not accounting for the little "wings" that were on the cap. I ended up having to relocate the chlorinator so that I would have proper clearance.
10) It works great, with no leaks!

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