Preparing to start up my Jandy Chlorine generator

Frankw1

Member
Dec 28, 2020
13
Dallas tx
Bought our house with a pool last October. Pool and equipment was is excellent condition (with one exception). Previous owner had been floating tablets to the point that the CYA was sky high, like 200+ sky high. I've since worked it down to 80-90 range.

I suspect that the reason he had been using tabs was because the salt cell had not been working for quite some time - but have no proof of this, other than the high CYA. Broken? worn out? who knows. He probably didn't want to replace it knowing he was selling the house. But I don't know this for sure.

Anyway, I've kept my chemistry numbers in line over the winter (i'm a bit anal over it, wife says), but as the water temperature is beginning to rise I'm ready to begin the process of chlorine generation. One problem, though. I noticed that the cable from the sensor on the cell to the control unit had been chewed by mice/rabbit? so is causing flow error codes. I have ordered a replacement sensor and will install this weekend. Don't know if this was why he was not using it or it was because he knew the cell was bad. Dunno.

After I get the new sensor installed and the water temp is warm enough, my plan is to add salt and begin to start up the chlorine generation process. I've read a lot of information here on the forums and have a pretty good idea how to begin the process - have my salt test kits, test salinity BEFORE adding salt, completely dissolve the salt, etc (Thanks a million to you experts!), but at what point will I know if the cell is bad? What are some specific things I should be looking for? What would you do in my shoes? Will it be as simple as turning up the production rate and noticing that it does not affect the chlorine number?

Any thoughts and/or recommendations you can contribute will be greatly appreciated.
 

JamesW

TFP Expert
Mar 2, 2011
23,829
What are the first 5 characters of the cell serial number?

Did you get the bad relay replaced?
 

Frankw1

Member
Dec 28, 2020
13
Dallas tx
James, the serial number is A07GJ1004 (which I assume you're going to tell me means a 2007 model?) The pump relay is coming. It only acts up periodically. Whenever it doesn't activate, I bang the outside of the box and it activates. Hasn't become stuck in the last week or so.
 

JamesW

TFP Expert
Mar 2, 2011
23,829
I think that the cell is from 2007, which is really old.

Check the plug to see if the connections are good.

Check the salinity and start the SWG.

If it's not working, it will give you an error code.

You can check the amperage by accessing the wires where the cell cord connects.

You can look inside the cell for scale and to see if the plates are corroded.

Most likely, you will need a new cell kit with a 1400 cell, cord and trisensor.