Question about Hayward In Line Chlorinator 9 Lb. Capacity for 2" Plumbing

1 Answer

My Hayward In Line Chlorinator has been great for 20years . I have replaced the cap about five years ago. It is leaking through the top & there is an awful lot of mineral build up inside the canister. If I use vinegar will that help dissolve the build up? Any advise on stopping the leak? Does the quality of puck affect the flow or could it cause blockage. A friend gave me her old pucks & I have used them this last month. There was water at the very top when I opened the canister top. Is that normal or is that a sign of blockage? Is it time for a new unit or can I make this unit last? What is the price of a new one today? Ed

Posted by on


1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.


    An expert whose answer got voted for 500 times.

  • Hayward Master
  • 1,378 Answers

Nothing will remove the buildup because that is mostly the housing of the unit distorting over time with the chlorine inside. Puck quality has a bigger effect on water chemistry than the chlorinator itself though cheap imported pucks are likely to stain the inside of the chlorinator just like they often do to the pool. A new inline chlorinator is about $90 so I would assume it is better to buy a new one than to try and repair a worn out 20 year old one...just my opinion.


Posted on Sep 12, 2010

Testimonial: "Thanks John. I did not know the chlorinator was self destructing. Ed"


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Why does Pump lose its prime and won't prime again after shutting down

you have a leak in one of the intake unions make sure to use pool lube if those ok check pump top seal or chlorinator top keep checking youll find it if not need more info

Aug 17, 2014 | Hayward SAND FILTER, PRO SERIES

1 Answer

Pipe drain plug in chlorinator will not twist off

drill a pilot hole into plug and remove old plug. worst comes to worst, replace the bloody chlorinator!!!!!

Apr 11, 2014 | Hayward Pool Products Hayward CL200...

1 Answer

Hayward 220T pool filter is leaking water; could it be the multi-port valve needs to be replaced?

if coming out of top where handle is yes if out backwash line yes make sure unions are tight also

Dec 30, 2013 | Hayward SAND FILTER, PRO SERIES

1 Answer

Hayward chlorinater not dispensing properly

make sure not air locked turn on with top off when it starts filling with water put on top

Mar 19, 2013 | Hayward In Line Chlorinator 9 Lb. Capacity...

1 Answer

What does the code PO455 mean?

PO455 Evap System Gross Leak

The old days left in 1981 some 32 years ago

You really have to smoke test the Evap System to
find hose leaks & use a scan tool to actuate the solenoids
to check for bad ones

Without a system diagram your pretty much lost

Nov 27, 2012 | 1999 Mazda MX-5 Miata

1 Answer

Hayward cl220 chlorinator with new lid gasket wont seal

need new oring unscrew plastic ***** on top separate top from threads replace oring lube then put back together

Jun 15, 2012 | Hayward In Line Chlorinator 9 Lb. Capacity...

1 Answer

Hooking up five hoses to my hayward pump/filter

Your system has a suction side and a discharge side. Skimmer and bottom drain hook to the suction side. Returns (discharge) return via chlorinator or other sanitary system and heater if appropriate, to ports in the side of the pool.

May 31, 2010 | Hayward SAND FILTER, PRO SERIES

1 Answer

My Hayward CL200 chlorinator is eating up 3 inch tabs

This can be very trickey. I've been it the busniess for thirty years and changeing the valve out confused me and had me pulling my balding hairs out. then when I was done I thought what was all the hub bub about. If you go out and get areplacement valve it will come with some very confuseing directions. What all this boiles down to is there is a snap ring of sorts behind the dial that will get pulled out like a string on a laundry bag only it is made of plastic that has always lived with chloriene an will be brittle, so be careful. It will come out a very small slot at the bottom of and behind the dial.. If you break it it will be a real pain to get out and that is all the help I can give you on that. But once you do it once you will say what was all the hub bub about. You will want your neighbors to get one so you can show off. The gut on your valve is the Acilies Heal on this chlorinator and may be needed to be changed every year or two but other than that it is in my humble oponion the best erosion feeder for house hold use. Well good luck and get the new one before you start so you can see what I have been talking about and see the pictures I can't draw here.

Sep 16, 2009 | Hayward In Line Chlorinator 9 Lb. Capacity...

1 Answer

I opened my pool a couple of weeks ago and filled my Hayward CL200 chlorinator with 3'' tablets. I usually set the dial on 2 with good results. After over a week, the chlorine level was nill in the pool....

A CL200 Involves direct injection of chlorine into the pool. Water passes through the chlorinator and goes to the pool with chlorinated. WIth the 200 (Not the 220) I've only seen a handful with problems over the years with chlorine not dissolving. If the chlorinator is not leaking, and the control valve is moving freely here's what I'd recommend.

1. Are you using a new type of tablet?
If so remove the tablets and place into a floating chlorinator.*** WARNING Wear Rubber Gloves, while handling wet tabs****
Dial it all the way open. If the tablets don't break down at this point with in a day or two, They were over compressed at the factory, potentially have to much filler (most slow tablets should be 95-99% cholroine) or the water is too cold ( below 70 deg. This should not be an issue in July) If this is the case switch brands.

If the chlorine is dissolving in the floater but not the chlorinator it could be one of the following.
1. Make sure the direction on the chlorinator is correct inlet (from Filter) to outlet (to pool)
2.. In some of the newer 200 chlorinators there is a built in check valve you can see it in the bottom of the chlorinator You will notice a threaded piece in the bottom that contains a white plastic ball the size of a pea. If this ball does not move freely to the touch, odds are the filler in your chlorine has clogged it from moving, thus preventing the flow of water from dissolving the chlorine.
You can check this by removing the chlorinator from the pool, removing the lid and pouring water directly into the top. If you do not see water passing through to the "Outlet" side of the chlorinator a clog is most likey your problem.
I've seen clogs cleared with wire coat hangers and hot water. Be forewarned that hot water being poured into a chlorinator will cause the any residual chlorine to gas off, make sure you do not have you face over the chlorinator when you add the hot water and you do so in a very well ventilated area. A straightened wire coat hanger can be used to dislodge any obstruction in the check valve and "get the ball rolling again"

Hope it helps.

Jun 10, 2009 | Hayward In Line Chlorinator 9 Lb. Capacity...

1 Answer

Leaks after a couple of weeks use

You may need to put a hartford loop in your plumbing between your chlorinator and the heater. The chloriene will back up in the line bad when the pump is off and corrode the exchanger. A hartford loop is simpley a loop than runs low then high above the top of the heater so it can trap gasses in the line and won't let them get back in the line. If all else fails you can use a floater. Be sure to check your PH also. Good luck.

May 30, 2009 | Hayward H Series Electronic Ignition...

Not finding what you are looking for?
Hayward In Line Chlorinator 9 Lb. Capacity for 2" Plumbing Logo

Related Topics:

456 people viewed this question

Ask a Question

Usually answered in minutes!

Top Hayward Pool & Spa Experts

Jay Finke
Jay Finke

Level 3 Expert

1383 Answers

Craig Butler
Craig Butler

Level 3 Expert

1723 Answers

Charles T Nevin
Charles T Nevin

Level 3 Expert

4070 Answers

Are you a Hayward Pool and Spa Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides