Little to no suction in skimmer

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Old 06-08-19, 12:44 PM
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Little to no suction in skimmer

I have 3 skimmers n my pool. Currently only one of the skimmers has really good suction where debris from pool is actually getting pulled in. The other two skimmers have little to no suction. Last year all lines were blown out when pool was closed. Is there a way to tell if these lines are clogged? If so how can I unclog the lines either from the skimmer side or the pump side ?
 
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Old 06-08-19, 12:57 PM
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Cap or block off the one that is working correctly. See what the other two are doing. Then block one of them off to see if the remaining one is the same as the first one.

The pump will draw the most from the path of least resistance and usually the closest location. Doubtful the line got plugged over the winter. If you had a winterization failure you would be leaking water or drawing in air.

Interesting with three skimmers. Most pools, like mine, only have two. The shallow bottom drain connects to the shallow end skimmer and the deep drain connects to the deep end skimmer. I have two ball valves..... one for each end. With my skimmer..... if you cap it off...... it draws only from the bottom. If you want just the skimmer to draw you drop in a 1' piece of pipe which closes off the bottom drain.

Is this a new problem this year ?
Are you new to the pool ?
In the event of a clog...... you would ultimately blow air back thru in the opposite direction.
 
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Old 06-08-19, 01:59 PM
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I don't have bottom drains. I'm not sure why the pool company bully it this way. I have two deep end bottom returns. So Going into the pump are the 3 skimmer pipes with ball valves for each one so I can isolate each skimmer. Then coming out of the filter I have return pipes with ball valves for the steps, pool, bench, deep end bottom, and slide.

Interesting is that the skimmer with the most suction is the furthest away.

This is a new problem. This is my 3rd year with the pool. I'll try your suggestions and report back.
 
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Old 06-08-19, 02:37 PM
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Since you have a valve for each skimmer you can use that as the shutoff. Just run one at a time.
 
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Old 06-08-19, 02:50 PM
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Yes that's what I just did:

All 3 open:
- shallow end skimmer high suction pulling debris in from pool
- middle end skimmer very low suction. Not pulling in anything from pool
- deep end skimmer low suction. Not pulling anything in
- filer pressure solid at 19psi

Shallow end skimmer only
- high suction pulling in debris from pool
- filter pressure 19 psi

Deep end skimmer only
- decent suction pulling some debris from pool
- filter pressure 19 psi

Middle end skimmer only
- low suction not pulling in debris from pool
- filter pressure below 10 psi and pump makes a whiny sound off and on

Ok so any idea what can I try next ?
 

Last edited by jaspers95; 06-08-19 at 04:14 PM. Reason: Correction
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