pump priming above pool

[mizzouguy]

I have a pool that the pump and filter sit about 4 feet above the pool decking because of a retaining wall and it was the best fit for the pump location.

Anyway, it takes forever and is a pain in the rear to get it primed because the water drains back into the pool so easily. I literally have to fill the line going to the main drain and turn off the one to the skimmer to start it. Once that was starts going after a few mintues and then have to slowly start opening the line to the skimmer.

Anyone else have this problem? Any solutions to help? I was thinking about some sort of check valve or something???

thanks for any suggestions!

(33k inground liner SWG)

[Mike_in_NJ]

Yup, check valve between the pump and the pool. Like this one:

http://www.poolplaza.com/P-JDY-56-4084.html

(no endorsement of product, vendor, or pricing one way or the other implied)

[mizzouguy]

Kewl, thanks for the link.

My only question with using a check valve: I usually put the hose in the pipes that go to the drain and skimmer to get them as full of water as I can. Is there going to be a way to do this if I have a check valve in the path? If not, I don't think I'll ever get it primed.

[Poconos]

I pondered your statement in your original post on this thread about filling the pipes wondering how you could do that. Then it hit me...the obvious...you must have valves in the skimmer and MD lines just at the ground surface but still about 4' below the pump. Close them and fill the 4' height of pipe however long it is. Otherwise the water would just flow back into the pool. Is this true? If so the check valve mentioned would have to go at about the same level as your manual valves. I also assume you fill the pipes with a hose in the pump basket? One comment, you have some kind of air leak somewhere if the water eventually drains out of the pump and lines. Didn't say what kind of filter you have but one source of an air leak could be a multi-port valve on a sand filter. A tiny leak (for air) to the waste line under a slight vacuum. If applicable, try capping that line and see if the water still drains out. Simple fix if true, ball valve in the waste line out of the filter. Could even be a tiny leak in the pump strainer cover. When the pump is running the cover is pulled tightly by the suction, when off you lose a lot of that suction and may have a slight leak.
Hope this helps.
Al

[duraleigh]

I pondered your statement in your original post on this thread about filling the pipes wondering how you could do that. Then it hit me...the obvious...you must have valves in the skimmer and MD lines just at the ground surface but still about 4' below the pump. Close them and fill the 4' height of pipe however long it is. Otherwise the water would just flow back into the pool. Is this true? If so the check valve mentioned would have to go at about the same level as your manual valves. I also assume you fill the pipes with a hose in the pump basket? One comment, you have some kind of air leak somewhere if the water eventually drains out of the pump and lines. Didn't say what kind of filter you have but one source of an air leak could be a multi-port valve on a sand filter. A tiny leak (for air) to the waste line under a slight vacuum. If applicable, try capping that line and see if the water still drains out. Simple fix if true, ball valve in the waste line out of the filter. Could even be a tiny leak in the pump strainer cover. When the pump is running the cover is pulled tightly by the suction, when off you lose a lot of that suction and may have a slight leak.
Hope this helps.
Al

Hi, mizzou,

I have almost the exact setup. before I respond, read Al's post carefully. He's saying that without valves in the skimmer and MD lines AT THE WATER LEVEL the water you put into the strainer basket with the hose is simply running back into the pool....doing you no good.......... I agree.

Do you have those valves?

The second part of his post sort of assumes you can't hold prime with the pump off....that your prime eventually leaks back out...i.e. air in the strainer basket. I am assuming something else....that you only lose prime when you open the strainer basket to empty it. Tell us which is the case.

Help us clarify those two things.....I might have an answer for you that works reasonably well.

[mizzouguy]

Thanks for the replies.
Ok, I have two lines coming up out of the ground, each with it's own shutoff valve. The 2 then go up a few inches and combine into 1 which then goes horizontally into the pump. I do NOT have any other valves at the skimmer, etc.... So yes, when I put the hose into the pump basket...the water goes right back into the pool. I shut off the valve going to the skimmer (the one mentioned above) and run the hose for a while and then shut the door to the pump real fast and turn it on. Within 5 mintues I have water coming in and then I slowly open the valve to the skimmer up. Again, this takes several minutes. Finally both of them are flowing.

As far as keeping prime: I have automatic shutoff every night so I'm not losing prime as it is always pumping fine in the morning. I only have the problem if I open the pump basket....and I was told not to shut off the pump when turning it to backwash so I wouldn't have to prime it again. (ALTHOUGH, I'm not really sure that it would actually lose prime....I've never tested it). And yes, the direction on the filter say not to move the lever to backwash, etc unless the pump is off.....

Hopefully, that helps clear it up a little bit. I guess it's really not that big of a deal, I just didn't know if everyone else has the same problem or if there was an easy fix.

thanks again!