Question about Hayward Sand Filter System & Tank 21" 1 1/2 Hp

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I have air bubbles in pump and junk is returning back into the pool. the pump and the filter are both brand new as is the skimmer. there are no leaks that i can see but there is a funnel formed in the skimmer when the pump is running which causes air to be sucked into the pump. any ideas?

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It sound like there is damage to the collectors in the bottom of the filter caused during installation. The collectors at the bottom of the filter are quite delicate and could easily be damaged when adding new sand or other filter media.The collector housing should also be bonded as sand can return through the gaps to the pool. Turn the valve to recirculate and you should see that after a minute or so debris will stop coming out. If this happens then its definitely the filter collectors.

Posted on May 24, 2012

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Raise the water level in the pool

Posted on Jun 15, 2010


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your filter is on the pressure side of your pool system. there is no need to bleed air out of a filter as the water will remove it automatically. if you are seeing air bubbles coming from the return jets, you most likely have a leak on in the plumbing on the suction side of your pool system. this runs from the skimmer to the front of the pump.

Jun 22, 2014 | Hayward SAND FILTER, PRO SERIES

1 Answer

It looks that my filter has some air in it, how can I take it out?

In a properly plumbed pump/filter system, while the pump is running air can be introduced only through the suction side of the hydraulic system. (Water can cavitate within the pump, but this is not air, rather water vapor in bubbles. Once the pressure is reduced downstream of the pump turbine, cavitation will cease and the bubbles will return to liquid water. Nevertheless, pump cavitation is a serious problem that also needs to be avoided.) In other words, air gets in upstream of the pump. Downstream the water pressure would be to great to allow ambient air to enter the system -- rather water would leak out.

On the upstream side of the pump there are several places to look for air suction:

1. Most common, water level too low in pool, and air enters through skimmers. Most pool owners discover this on their own and correct the problem.
2. Less common, suction-side fitting or seal is not properly sealed. This could be at the pump basket housing seal, the pump drain seals, an upsteam valve, etc. If you have antifreeze ports, look closely at these fittings. Be sure to replace seals often. Teflon tape should be replaced every season. In many cases the only way to find a bad suction seal is by seeing air in the pump basket. In a properly sealed system you should not see any air in the pump basket after just a few minutes of starting the pump. If you see a pocket of air continue in the basket after a few minutes, you likely have an air source upstream of the pump. The effects of a leaking seal will be amplified if the skimmer line is blocked with debris either at the skimmer or in the lines. The pump continues to work hard to suck water into the system. If it can't get water, a leaking seal will be the source of vacuum release via the entrance of air through the bad seal.
3. Less common yet, a broken skimmer line from the skimmers to the pump, potentially underground. Obviously, this is in the most costly to repair.

Here's an example of what one might find. A pool owner has forgotten to replace the Teflon tape on his antifreeze ports for many years. Since these ports are opened and closed both at the beginning and end of each season, the tape has worn out and is no longer sealing the ports. He sees a large bubble of air collecting in the pump basket, and a stream of air bubbles in the return water stream going back into the pool. His fix? Remove the antifreeze port plugs, remove the old Teflon tape, replace with new Teflon tape, then replace the plugs.

Jun 17, 2014 | Hayward SAND FILTER, PRO SERIES

1 Answer

Air in whisperflo window, bubbles from pool jets

This is a air leak on your suction side between the skimmer and the pump. You will not see water in the yard on the suction side usually, only the return. It is usually just the fittings around your pump or the seal around the pump lid, check those first and make sure you do not have a loose clamp or a damaged or dry seal. If that is not it then call in your local service guy to determine where the leak is. They will most likely pressurize your suction line to find the leak. Hope that helps.
Time to Open the Swimming Pool

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Baracuda keeps disconnecting from skimmer when timer on pool shuts off

Sounds like you need a cuff to go into the skimmer to hold the hose in place. Or you may have air in your system. This builds inside your filter then when the pump goes off the bubble expands up in size and blows back through system. Check all your hoses for air leaks if this is the problem. If they are OK start checking pump lid "O" rings and plumbing. get rid of the air and your problem should stop.

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When I backwash or rinse my pump reservoir fills to the top when I filter I have air bubbles at pool discharge and reservoir about 3/4 full and air is evident. Do I need to start digging up my skimmer line...

When backwashing or rinsing the same water is used as in filtering.(skimmer and main drain) so I don't think skimmer damage is the issue. Check if the pool water is low at the skimmer after the backwash cycle, Also check to see if the skimmer weir gate (flapper) is stuck in the upright position. I would suggest 2 main checks. Fill the pool higher than usual, back wash, ensure the pool water level is 1/2 way up the skimmer level and try again. Also, if your lines are valved right, shut off the skimmer during the filter cycle and see what happens. Lastly, the gasket on your multi-port valve may be bad.

Jul 16, 2010 | Hayward 3/4hp Super Pump Inground Pool...

1 Answer

I see air bubbles in the motor window

Make sure you water level is adequate so as not to draw air through the skimmers. Also, the o-ring on the pump strainer might be bad or debris on it. While the pump is running, shut it off and see if water squirts out of the pump lid or fittings right when it shuts off.

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1 Answer

No suction from hayward variflow pro series sand filter

Try these tips. I am guessing that one of these is the reason that your pool filter is not working properly. If you try these suggestions and they don't work, let me know and I will trouble shoot with you again.
1. Check skimmer and pump strainer baskets for debris.
2. Check for restrictions in intake and discharge lines.
3. Check for air leak in intake line (indicated by bubbles returning to pool.
4. Backwash your filter.
5. Be sure Vari-Flo valve is set on “Filter” position.

May 22, 2010 | Hayward SAND FILTER, PRO SERIES

1 Answer

Bubbles coming out of the holes in the side of pool, when filter is on

The 'holes' are the water returns?

Air bubbles are are going back to the pool because there is a leak somewhere on the suction side of your circulating system, I.E. somewhere between the skimmer and the pressure side of your pump.

First off, you must bleed the air from your filter regularly. There should be a bleeder at the very top of the filter.

Next: Please check the strainer cover and all plumbing connections. After you have checked every thing, you may want to use silicone grease at each opening or joint in the suction side including the plumbing fittings.

I hope this information has been of some assistance to you.

As a Certified Pool Operator (CPO), I maintain several public pools. I had a devil of a time finding my leak. Turned out it was the fitting where the suction line entered the pump housing (at the strainer). I found it using the method I suggested to you. No amount of teflon tape would stop the leak, but the silicone grease (available at pool supply place as "O" ring lube) took care of it.

I hope you have success plugging your leak. Thanks for posting your question at Please remember to vote - it is important to we volunteer workers.



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1 Answer

Brand new 2009 model 8111 can't get filer to run

There is an air lock, so it seems. Leave filter off, on top of filter is a valve to let air escape. Keep this open until you get a stady stream of water from oulet, then close. Start pump. Not being a smart ****, besure that the water flow is correct. Skimmer to inlet side, return to pool.

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check for air leaks, cover o-ring is common culprit. anything in front of pump can cause this.

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