Question about Hayward SAND FILTER, PRO SERIES

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I have a S166T90 pro series sand filter with power-flow Matrix pump. Filter seems to be working OK but when I attempt to vacuum the water level in the pump housing drops drown and there is no suction in the vacuum. Looks as though water is trickling from the pump strainer cover. The pool is only 2 years old. Could the pump strainer cover 'O' Ring be causing the leak which is resulting in poor vacuum suction?

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Sounds like air in the line. Make sure vacume hose is full of water before you hook it up

Posted on Jun 15, 2010

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1 Answer

While vacuming loses suction, sand filter pressure goes high


That increase is due to the filter loading up with debris. Is the pool unusually dirty? If there is a lot of dirt and silt in the pool use the "waste" setting on your backwash valve while vacuuming.
This allows the water to bypass the filter and go directly out the waste line. Keep an eye on your water level because you will be removing water from the pool and may have to add more.

Jun 30, 2013 | Hayward SAND FILTER, PRO SERIES

1 Answer

Sticker wore off on the filter. which button backwashes? the pool is about to overflow.


b> VALVE SETTING FUNCTIONS OF VALVE POSITIONS FLOW DIRECTION THROUGH VALVE FILTER PUMP - TOP - THROUGH FILTER - BOTTOM - RETURN For normal filtration and vacuuming pool through filter. BACKWASH b> PUMP - BOTTOM - THROUGH FILTER - TOP - WASTE For reversing flow for cleaning filter. RINSE b> PUMP - TOP - THROUGH FILTER - BOTTOM - WASTE For initial start-up cleaning, plus resetting filter bed after backwashing. WASTE b> PUMP - WASTE For vacuuming directly to waste, lowering pool level/draining pool. CLOSED b> NO CIRCULATION PAST PUMP PORT For shutting off all flow to filter and pool. RECIRCULATE b> PUMP - RETURN For bypassing filter, but circulating pool water. May be plumbed for "off-system" pool water access. Ideal for Jet-Air® fittings. WINTER b> VALVE NOT IN USE
Ifthis answer does not fix your problem, please comment with additional detailsprior to rating the answer. Positive feedback is appreciated once your problemis solved! Thank you.

Aug 28, 2011 | Hayward SAND FILTER, PRO SERIES

2 Answers

We have a hayward 244t sand filter. I was trying to learn how it works. I was trying to vacuum the pool but all the trash is coming back into the pool. What do I do?


For regular vacuuming, these pool filters should be set to the "filter" setting filter control valve. However, if you have a heavy load or the debris seems to be coming back into the water, you can try vacuuming with the filter set to the "waste" position. This will bypass the filter and vacuum directly out to waste.

Mar 13, 2011 | Hayward SAND FILTER, PRO SERIES

1 Answer

We had a lot of rain and mud got in the pool. i vacuumed the pool twice and the third time i vacuumed it, i put the filter on "waste" instead of keeping it on "filter". it cleaned up very well that way...


You may have to change the sand from to much mud. this requires removing the valve from the top and syphoning the sand with a "sand changer" then removing the latterals from the bottom.( they unscrew from the hub inside the filter and cleaning them. Return the correct the amount of sand covering the tube shaft that connects the valve to the hub sot he sand doesnot clog the flow again. Return valve to the top and it should flow freely again.

The Pool Tech

Aug 07, 2010 | Hayward SAND FILTER, PRO SERIES

1 Answer

Dial a flow question


Ok the first on the PSV valve. the 1/2 position should really be 1+2. You have two linlets to your pump. One from the skimmer and one from the main drain in the floor of the pool. When you select port 1 it will be one or the other perhaps 1 would be skimmer and 2 would main drain. You can select one and see if the flow stops in the skimmer. That will tell you which is which, depends on how it was plumbed. Position 1+2 combines the two flows. I normally select both, If my pool gets a lot of grass and leaves, I select skimmer only or when I vacuum. I select main drain only when there is more debris at the bottom. OK recirc is only recirculating within the piping system bypassing the filter. You can dowload a complete manual of your filter and components from www.haywardnet.com. Green water: Ok your chemicals are right? Free Chlorine, total chlorine? hardness, calcium, pH, alkalinity? Well most pool companies want you to buy some algaecide and that can't hurt, but I'd shock your pool if it's dark green I'd put it 4-6 gallons of liquid chlorine, if its light green 2-4 gallons. This is when I'd use recirculate. Allow this to mix without filtering for a couple of hours. Turn the pump off and allow to set overnight. In the morning you should have much clearer water, with green slime sitting on the bottom. Vacuum this to waste very gently so as not to remix algee.IF this doesn't work you'll need som floculant and repeat the opeation folling the directions on the floculant Restart filter, keep chlorine level high above 5-10ppm for a day or two and keep filtering. If it is still cloudy now,add some filter aid. In hot weather, don't let that free level go below 4ppm. Don't allow anyone to swim while chlorene level is high. Be sure to us test strips that indicate free and total chlorine.

Jul 21, 2010 | Hayward SAND FILTER, PRO SERIES

1 Answer

Vacuum does not seem to be sucking out debris


If your filter is clean and you still don't have enough flow, check the pump impeller. If your pump basket is damaged, sometimes debris can get to the impeller and restrict flow. You will have a low filter pressure and vacuuming will not be strong at all.

Aug 05, 2009 | Hayward SAND FILTER, PRO SERIES

1 Answer

My pool sand filter pump isnt filtering the water


could possbly be a bad gasket on the vari-flow valve. When is the last time you backwashed?

Apr 25, 2009 | Hayward SAND FILTER, PRO SERIES

2 Answers

Sand filter not catching little debris


Filter is being bypassed at backwash valve, due to poor spider gasket in valve, or there is a broken lateral in bottom of sand filter, causing debris to return to pool..

Feb 18, 2009 | Hayward Pro Series 18" Above Ground Pool...

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