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No Pressure side cleaner. No holes inside. I do notice the cap looks as though it was often accessed because you see markings from tools that were used to unscrew it (those whom would have accessed it would only be the ones that installed and always opened/closed the pool since installation). I also noticed that one year that cap was not very tight on the piping after it was opened one Spring.Do you know if the there was ever a pressure side cleaner? The booster pump could connect to that pipe and the pump was removed. Do you have an return in the pool that does not have flow or is plugged? That could be the other end of the cleaner plumbing.
Alternatively, does it have any holes in the side near the top or completely plugged?
No fittings laying around and I also think it is probably a drain. I do believe the pool company that always opened and closed the pool each year accessed it often since you could see indents from the tools used to pry open. Not sure if I should also tend to this upon winterizing?Given it's placement and the type of cap, it looks like a drain. It may be connected to your sewer or to a landscape drainage system. Is there a hose with 1.5" fittings laying around about the length of the distance between the filter and drain (about 3')?
But the filter does have a drain already. Cant be connected to the sewer, but conveniently the sewer drain runs along the fence line which I typically will run my hose when needing to lower the water level some after heavy rains.If you have a hose bib on the pad maybe it is a drain used for draining the filter, lowering the pool via hose bib and then put the hose into the drain if that is connected to downspout drains??
will try that, thank you. To be continued...Unscrew the plug and blow shop vac air down the pipe and see if you see or hear it coming out anyplace.
UPDATE. Tried to use shop vac to push water out in hopes to see bubbles. Nothing. Any other suggestions? To make sure I did it correctly, I closed the main drain off while doing, was that correct?will try that, thank you. To be continued...
Took Cap off, turned pump on, no air flow vacuum in that line. The other similar cap I assumed was to address the heater during winterizing?Also, do you know why there is a similar plug on a "tee" fitting that goes from the filter to the heater? It is curious that both are plugged. But they could be unrelated.
If there is no extra pipe going to the pool (which does not have flow when pump is on), then the pipe has to go somewhere else. The air down the pipe is a good place to start.
Also, if the air does not tell you anything, then start the pool pump with the cap off and see if there is any vacuum on the line.
No, they are all linked to the same pipe and they all are working. Also, I believe the pool company that installed it, accessed it every year either for opening it or closing it, you can see the indent marks from the tools used to remove the cap. Both caps seems to be accessed with same markingsJust want to verify - when the pool pump is on normal circulation - does every return pipe in the pool have flow coming out of it? Also, are there any return pipes that may be plugged on the pool wall?
I appreciate all the trouble shooting tips you have been able to share. I am learning thats for sure. I saw something that maybe it is a sewer drain pipe for purposes of disposing of the water? But I am not sure how to go about that without digging out the pipe some and see where it goes or even call a plumber to see where it goes, but I would prefer to not take that route if I can.- can be costly.Any chance it could be a de-watering pipe? Maybe it is routed underneath the pool and serves as a way to remove any water under the pool - high water table. Not exactly a true well point, but similar. Maybe hook the wet/dry shop vac back up and attempt to vacuum (suck) water out?
Or maybe if suction is applied, it helps hold the liner against the pool walls?
Grasping at straws here. I have a gunite pool and never need to close it.
Maybe it is best for you to call that pool company and ask what they did when they removed the plug cap to winterize the plumbing. Maybe that is where they connected a hose to clear the plumbing. Based on the testing you have done - it probably does lead to some underground drainage.Also, I believe the pool company that installed it, accessed it every year either for opening it or closing it, you can see the indent marks from the tools used to remove the cap. Both caps seems to be accessed with same markings