Problems for a new pool user

ncbk83

Member
May 27, 2019
14
Kentucky
So I'm a complete novice with pools. However, I have the support of a wife and a great friend who have been supporting me.

The trouble started earlier this year when we realized our usual pool service we pay monthly hadn't showed up in a while to clean leaves off the pool cover or around the pool (the only maintenance they do during the winter when the pool is closed). Come to find out the company had literally closed its doors and told none of its customers, but continued to automatically bill everyone. That's another issue entirely.

As a usual DIYer around the house, I declared that was enough, time to manage the pool on our own. We took off the cover, started cleaning out debris, which according to the wife and friend was way more than should have been left in the pool when it was winterized and covered.

Fast forward to starting to vacuum the disgusting debris out, the wife and friend
had everything in the filter system reattached and primed while I stood around gawking, trying to learn everything I could.

We started up our robot, typically reliable but now seems less than able to clean with how much excess debris has collected.

The trouble came when they switched the multiport valve to FILTER. Sand starting blowing out the return jets. So I looked that up, emptied the sand filter. found out the standpipe was cracked and so were three of the laterals. So I emptied filter and replaced them, replaced sand, reconnected - all's going well.

Decided to clean my SWG, that's when another major problem happened. Took it apart, cleaned with acid, SWG not really very dirty at all, in fact was fairly prisitine. So I figured no harm no foul, at least I know how to do that.

I reattached the PVC unions and the upstream union had a leak, a big leak when I reattached it. As we had the big filter leak, there was some lot sand in pipes prior to reattaching the SWG, I figured some of it must have abraded surfaces and I probably over tightened, maybe tried tightening it three times trying to get leak to stop without luck and with adding silicone tape, so I figured I damaged the old union. So I cut it out and replaced it with new one.

Today. Still a huge leak with new union and new PVC connections.

My only guess now is:
1) cleaning SWG with acid damaged it and now water not flowing properly?

Or

2) there is some blockage creating too much pressure build up downstream of SWG, like sand in pipes or leaf debris

I don't know

Any thoughts or suggestions are appreciated.
 
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Hello and Welcome to TFP!! Sorry to hear of all your troubles.
It is unlikely that a blockage is causing the leaks. A blockage will just stop water from flowing.

Can you provide a picture showing where the leak is coming from?
You shouldn't use tape on the threads of a union. The sealing comes from an o-ring between the union faces. When you installed the unions, did the rubber o-ring stay in place? Lubricating the o-ring also helps.
 
Welcome to the forum!
What brand SWCG do you have? I believe all of them have proprietary unions such that you cannot use a big box store union to attach them into your piping.

I suggest you read ABC's of Pool Water Chemistry and consider reviewing the entire Pool School eBook.
 
Hi ncbk,
did you make sure the O Rings in the Unions were seated properly in their little groove?
did you lubricate the O Rings prior to attempting to tighten them? Using a lubricant on them is a MUST DO.
did you use a wrench of some sort to tighten them? its very easy to over tighten them if you use a wrench. Tighten them by hand as tight as you can, and then if it leaks, tighten with a wrench just enough until the leak stops. It usually just takes a tweak.
 
Hello and Welcome to TFP!! Sorry to hear of all your troubles.
It is unlikely that a blockage is causing the leaks. A blockage will just stop water from flowing.

Can you provide a picture showing where the leak is coming from?
You shouldn't use tape on the threads of a union. The sealing comes from an o-ring between the union faces. When you installed the unions, did the rubber o-ring stay in place? Lubricating the o-ring also helps.


Thanks for the advice, see attached picture, leak is coming from the purple primer side of the new PVC union.

I admit that the first few times I over tightened the old union when trying to stop leak. I added teflon tape when I didn't understand the reason for the leak.

The new PVC union I just installed, I have just hand tightened (after reading about all of these things I shouldn't have done), there is a new O ring on new union, I'll add some magic lube and see if that helps.
 

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Hi ncbk,
did you make sure the O Rings in the Unions were seated properly in their little groove?
did you lubricate the O Rings prior to attempting to tighten them? Using a lubricant on them is a MUST DO.
did you use a wrench of some sort to tighten them? its very easy to over tighten them if you use a wrench. Tighten them by hand as tight as you can, and then if it leaks, tighten with a wrench just enough until the leak stops. It usually just takes a tweak.

I'll lubricate the o rings now and see if it helps. I have only hand tightened the unions. Made the mistake of over tightening with wrench on old union
 
Welcome to the forum!
What brand SWCG do you have? I believe all of them have proprietary unions such that you cannot use a big box store union to attach them into your piping.

I suggest you read ABC's of Pool Water Chemistry and consider reviewing the entire Pool School eBook.

I did have to special order the new PVC union, much to my dismay.

See attached photo for SWG, its intellichlor IC40
 

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Welcome to the forum!
What brand SWCG do you have? I believe all of them have proprietary unions such that you cannot use a big box store union to attach them into your piping.

I suggest you read ABC's of Pool Water Chemistry and consider reviewing the entire Pool School eBook.

See attached photo, these are the two new SWG unions I bought on Amazon. They seem to be the proprietary ones you mentioned.
 

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The 520595 union looks like the correct one.
Before you use the threaded ring to attach the union to the SWG housing, does the union line up squarely with the SWG housing? It's hard to tell from the pic, but it looks like it's not in line with the SWG. That is a lot of water for a new union/o-ring.

Looks very square in real life, picture's not perfectly straight above so I can see what you mean, makes it look offset.

Also sad is that after replacing new PVC union, leak is essentially identical to before, it is leaking out almost 360 degrees around the SWG PVC union. Doesnt make sense to me why that would be.

Unfortunately, it is also easy to undo and redo, there is definitely a hard stop when the PVC union is hand tight with O ring so I see no need to use a wrench, not with that much water coming out. There is plenty of play with the PVC, so easy to manipulate and make sure it is fitting correctly.
 
I think you need to re-do the pvc side of the union. its very strange that there is that large of a leak there. After you have re--done it, let it dry a couple of hours before turning the pump back on.

Thanks , that is the plan. I think I must have done the PVC incorrectly.

Looking at this very closely, I think my mistake is not allowing a big enough gap when I plumbed in the new union, making the gap for the new connection to the swg too close. The union female threaded collar cannot get the PVC pipe seated close enough to create a seal. If this is incorrect, I'll post and show you the next mess I have made.

Here's to hoping I have it figured out.

Thanks for all the advice so far
 
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So it was definitely the poor plumbing. In addition. My SWG female threads are fairly rough and chewed up, I guess from previous tightening by me or the pool company, either way, it was near impossible to hand tighten, had to use a wrench to get the O ring even close after I replaced the PVC and enlarged the gap the SWG sits in between the unions. I think I was hoping the hand tightening mantra was all it needed, but when I replaced initially, I made the gap between PVC unions too narrow and the female threads on SWG side made it very difficult to tighten because they have had too much abuse in past. So with new PVC connections and a few extra turns using a wrench, I got the O ring easily seated and no leaks.
 

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