Rainbow 320 chorinator - check valve question

[beachgal]

Just installed a new Rainbow 320 in-line chlorinator. It replaces an old one. It keeps filling with water, though slowly, from the bottom of the chlorinator, ie where the check valve is.
The check valve should be good, i checked it and I hear it rattle, AND it’s brand new!

It drains the water out just fine when I turn pump off and remove the lid.

So, is it possible since I have a Hayward variable speed pump, that’s it’s not pushing water through fast enough to create enough force to make sure the valve is closed to prevent the water from coming in from the bottom where the check valve is? (I’m assuming that’s how the check valve is supposed to work, is that a correct assumption?)
Sorry, I’m not sure if I’m wording that correctly, but I hope that makes sense.
I run the pump at 2100 rpm 24/7.

We did not replace the T pipe, we used the existing one, it looked fine.

Please, no comments on switching to a SWG
I do use liquid chlorine, but I use the chlorinator when on vacation.

Thoughts and thanks!!

 

[1poolman1]

Just installed a new Rainbow 320 in-line chlorinator. It replaces an old one. It keeps filling with water, though slowly, from the bottom of the chlorinator, ie where the check valve is.
The check valve should be good, i checked it and I hear it rattle, AND it’s brand new!

It drains the water out just fine when I turn pump off and remove the lid.

So, is it possible since I have a Hayward variable speed pump, that’s it’s not pushing water through fast enough to create enough force to make sure the valve is closed to prevent the water from coming in from the bottom where the check valve is? (I’m assuming that’s how the check valve is supposed to work, is that a correct assumption?)
Sorry, I’m not sure if I’m wording that correctly, but I hope that makes sense.
I run the pump at 2100 rpm 24/7.

We did not replace the T pipe, we used the existing one, it looked fine.

Please, no comments on switching to a SWG
I do use liquid chlorine, but I use the chlorinator when on vacation.

Thoughts and thanks!!

The Rainbow 320 was never designed for use with a VSP. They are a very old item that was designed for use on commercial pools, not residential ones. If you insist on using that equipment destroyer, get one like the CMP Powerclean Ultra VS that was. You are better off using a floating tablet feeder filled with tablets when on vacation.
Example:

PowerClean Ultra Chlorinators

PoolZoom Pool Parts and Pool Supplies Online. Huge In-Stock Inventory, Quick Shipping

www.poolzoom.com

 

[beachgal]

lol, thanks for answering the question No worries, I did talk to Pentair, they'll be sending a new check valve, and they confirmed that water should NOT be coming up through the bottom of the chlorinator (ie through the check valve)....all I wanted to know