Stop skimmer from emptying when pump stops?

Maurino17

Well-known member
Nov 24, 2016
85
Bergen county nj
Hi all,
How do you prevent the debris in skimmer basket from emptying back into pool when pump shuts off?
I do have the weir door in place.
I was emptying the basket first with the pump running but it is under a lot of suction and the handle broke.
Any suggestions would keep me sane from this annoying issue!
 

Newdude

Well-known member
Jun 16, 2019
3,353
NY
Can you scoop out the bulk of it by hand first while the water is still running ? Or skimmer socks that would just pull out ? When mine are full they are pretty hard to pull out at 1400 rpms. I could only imagine at full speed like yours.
 

revitup

Bronze Supporter
Nov 30, 2019
221
Pawleys Island, SC
Don't pull it out by the handle, grab the rim of the basket. Use a glove if you have to. Don't let it get so full. Redirect most suction to the main drain if you have that capability.
 

Richard320

TFP Expert
LifeTime Supporter
Jan 6, 2010
23,680
San Dimas, CA (LA County)
Some leaves floating is normal. It sounds to me like stuff gets expelled. And that could be a suction side air leak. You'll develop an air bubble in the tank that gets compressed by the pump pressure. When the pump goes off, the bubble expands and forces water out the skimmer rather vigorously. So crack the bleeder on top of the filter while its running and see if any air escapes and if that helps with the problem.
 

Maurino17

Well-known member
Nov 24, 2016
85
Bergen county nj
Thanks everyone, good advice. I think Richard hit the nail on the head, it is more of an expelling than just water floating back Past the weir door. I’m going to bleed filter valve and check for air making it in to the suction side.
 

Maurino17

Well-known member
Nov 24, 2016
85
Bergen county nj
Some leaves floating is normal. It sounds to me like stuff gets expelled. And that could be a suction side air leak. You'll develop an air bubble in the tank that gets compressed by the pump pressure. When the pump goes off, the bubble expands and forces water out the skimmer rather vigorously. So crack the bleeder on top of the filter while its running and see if any air escapes and if that helps with the problem.
Thanks Richard!
 

Maurino17

Well-known member
Nov 24, 2016
85
Bergen county nj
Thanks Richard!
Hi Richard, I’ve checked and don’t have seem to have and suction side air leaks. I’ve been bleeding the filter regularly and that seems to have helped.
I was watching some videos and thing I could use a check Valve before my pump because it’s far from the pool and slightly higher so pump doesn’t prime too easily.
will that helpkeep water from forcing back to skimmer and expelling debris?
 

Richard320

TFP Expert
LifeTime Supporter
Jan 6, 2010
23,680
San Dimas, CA (LA County)
Hi Richard, I’ve checked and don’t have seem to have and suction side air leaks. I’ve been bleeding the filter regularly and that seems to have helped.
I was watching some videos and thing I could use a check Valve before my pump because it’s far from the pool and slightly higher so pump doesn’t prime too easily.
will that helpkeep water from forcing back to skimmer and expelling debris?
If you keep finding air in the tank when you open the bleeder, you have a suction side leak somewhere. Air doesn't just mysteriously appear.

Check valve placement is beyond my pay grade. Let's see what @JamesW or @jimmythegreek have to say
 

JamesW

TFP Expert
Mar 2, 2011
19,465
It's generally helpful to have a check valve between the pump and filter to prevent blow-back from the filter.

A suction side air leak will cause air to accumulate in the filter and the compressed air can cause a big blow-back. The check valve will prevent the blowback, but the air leak should be addressed.

Keeping the filter clean helps quite a bit.

I would add the check valve, clean the filter and address the suction side air leak if there is one.
 

Maurino17

Well-known member
Nov 24, 2016
85
Bergen county nj
It's generally helpful to have a check valve between the pump and filter to prevent blow-back from the filter.

A suction side air leak will cause air to accumulate in the filter and the compressed air can cause a big blow-back. The check valve will prevent the blowback, but the air leak should be addressed.

Keeping the filter clean helps quite a bit.

I would add the check valve, clean the filter and address the suction side air leak if there is one.
Thanks! I will continue to check for air leaks but hopeful the check valve will prevent the blowback.

Can I put Check valve before pump or Does it have to be between pump and filter?
 

jimmythegreek

TFP Expert
Bronze Supporter
In The Industry
Aug 10, 2017
2,501
Morris Cnty NJ
A pool plumbing system is like a straw with both ends plugged. When pump is off water shouldnt move amd pump should stay primed. If it doesnt air is getting in somewhere.
 

Maurino17

Well-known member
Nov 24, 2016
85
Bergen county nj
@JamesW @jimmythegreek @Richard320
Hi guys, I read your responses again carefully and went back to the pump, used the water hose trick I learned on youtube and did identify the drain plug was letting in air as you all suspected. I removed and added teflon tape and pool lube to oring and tightened back up. I had not realized how clear the water should be in the pump basket!

This resolved the issue of my filter blowing back when the pump stops. However, I think I still have an issue as the pump takes a while to prime back up and when it does I then have bubbles again! My pump is 35 ft from pool and higher than water line.

I made these short videos and if you have a chance to watch them I would love your help. Thanks in advance!

pump-vid-1
Pump running great no bubbles, I shut it off and water stays in pump basket.

pump-vid-2
I restart pump and quickly all the water in pump basket disappears.

pump-vid-3
Pump cycles for about 30 seconds still not flowing properly.

pump-vid-4
Around 45 seconds appears like going to work then water empties again.

pump-vid-5
Around 1 minute into cycling after being restarted pump is running with a lot of air bubbles

pump-vid-6
I cracked bleeder on filter which lets out new air and pump basket is now clear of air bubbles.

Is this cycling normal and why do I have new air bubbles? Is this related now to my pump elevation and distance?
 
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Maurino17

Well-known member
Nov 24, 2016
85
Bergen county nj
Have someone watch in the skimmer to see what the water does in the skimmer.
@JamesW

I took another video, here is the skimmer working fine and then what happens when pump shuts off. The pump basket was completely free of bubbles before it shut off. It also started right back up without bubbles but I didn't give it much time off so maybe it drains overnight.

Pump vid 7