Question about Hayward SAND FILTER, PRO SERIES

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Our sand filter is not filtering the water clean. We have changed the sand, but I have to backwash it every other day or the dirt comes back out through the jets. What is the problem and how can I fix it. Thank you, Sylvia

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Make sure you used #20 silica sand a smaller sand will do this. Also if you have alge be sure all the alge is dead or it will get through the filter. You can probally kill alge with liquid chloriene. Start with about 10 gal. chlor. per 10,000 gal in pool.

Posted on Sep 04, 2010

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1 Answer

How to get the right pressure to backwash and rinse


you dont need a lot of pressure to backwash just make sure water is clean coming out then rinse for 30 sec then put back on filter do not turn valve while filter is running you will ruin multiport gasket

Jul 18, 2014 | Hayward SAND FILTER, PRO SERIES

3 Answers

At what pressure should you backwash a sand filter


The back pressure at which it's time to backwash a sand filter is about 6-8 psi above the baseline pressure of a clean filter. Just after following the procedure to backwash and rinse your filter, check the sand filter's back pressure at the time you return the pump and filter system back into filter mode. This is the baseline pressure of your clean filter. As the filter gathers particulates from the pool water, the back pressure will rise over time, as indicated on your pressure gauge. Once the pressure reaches 6-8 psi above the baseline, it's time to backwash.

Some advice: Don't assume the baseline pressure will remain the same for your sand filter. The baseline pressure will change over time and when the sand media is replaced. Typicallly baseline pressure will go up slightly over a season due to captured particles that are difficult to backwash out. Use of a filter cleaner will help remove these captured particles.

More advice: Even with the use of filter cleaners and proper backwashing, sand media will not last forever. The constant water flow and movement of particles in the sand over time shears the surface of each little sand grain. Like a river flowing over rocks, over time each sand grain surface is smoothed, and thus its effectiveness for capturing small particles is reduced with ongoing use. A typical rule of thumb is to replace the sand media +/- 5 years. Some pool owners do it more often, some less. It depends on how long your pool season is each year and how much debris the filter much extract from the pool water.

Jul 16, 2014 | Hayward SAND FILTER, PRO SERIES

3 Answers

Pump is blowing cloudy water back into pool


Cloudy water is the bane of sand filters!. I suggest letting filter run day and night. Do not backwash until the pressure rises 8 - 10 pounds above clean starting pressure. Do not try to vacuum or stir up the sediment. when water clears, vacuum to waste. Keep the hose running while vacuuming. A dirty filter is a better filter (up to a point). At a higher pressure the filter will trap more of the fine particles that are clouding your water.

May 28, 2013 | Pentair Meteor Above-ground 22" Sand...

1 Answer

How to use backwash to waste


When the filter get clogged the pressure in the filter increases and there is less water flow returning to the pool.
If your filter is a sand filter, when you turn the valve to backwash and turn on the pump it reverses the water flow in the sand filter to flush the dirt out of the filter to waste. Look at the window openning in the waste pipe and keep the backwashing goinging until you see clear water.
Then turn off the pump and move the control valve to Rinse, turn on the pump for a few minutes, this returns the water flow back to normal but the water goes to waste to make sure the sand filter is clean.
Turn off the pump and move the control valve to filter and turn on the pump. This mode is the normal operating mode and the pressure gauge in the sand filter will show a drop in pressure.
Some pressure gauge shows a red section to indicate when backwashing should be carried out.

May 02, 2012 | Hayward Pool & Spa

1 Answer

If I turn to back wash, will I lose sand. Should I use waste out to clean the filter


Backwash is meant to clean the sand and remove dirt from the filter.
Waste simply pumps the pool water to the drain line and doesn't clean the sand.
If the filter has its distributors, the sand should be held in the canister.
Gary

Jun 27, 2011 | Hayward SAND FILTER, PRO SERIES

1 Answer

My Hayward Swimpro Sand filter is not backwashing


Be sure it is not plumbed backwards and be sure you got a sand valve as a DE plumbs the other way.

Jun 25, 2010 | Hayward SAND FILTER, PRO SERIES

1 Answer

I changed my sand in the filter last month, when I opened up the pool it was full of green algae, the filter is working but I haven't had to backflush since 2 days ago. The water is still extremely cloudy...


If the water is beginning to clear up, it doesn't sound like you have done anything wrong. You might just need to let your pool filter keep working. I would
a) make sure that your pH, chlorine, and alkalinity levels are correct. An inproper balance of chemicals might be causing the cloudyness.
b) Be sure Vari-Flo valve is set on “Filter” position.
c) Operate filter for longer periods.
d) Make sure that the flow rate through filter is sufficient.
e) Continue to backwash frequently.
Try this for a few days and let us know if you still don't notice a change.

May 24, 2010 | Hayward SAND FILTER, PRO SERIES

1 Answer

No green comes out in backwash


Alge will quit often go through filter so first you need to kill the alge by super chlornateing the pool. You can take a water sampel to your pool store and give them the size of your pool, they can test your water, for nothing in most cases and recomend what you will need for this. Then you can start cleaning the mess up as the dead alge will turn to dirt. This dirt will be very fine and may go through your filter also so a cup full of D.E. in your skimmer after backwashing will usually coat the top of your sand and catch much finer dust and dirt. Do this as you clean the pool and backwash 1-2 times daily till clean. Follow all directions given to you at store to kill the alge first, this is very importiant.

Aug 09, 2009 | Hayward Sand Filter System & Tank 21" 1...

1 Answer

I have a hayward s200 sand filter. When I vacuum, i backwash but dirty water doesnt seem to backwash out, just clean water. When I turn filter on small amounts of dirt you cant see come out of jets and re...


Are you using the rinse setting for a few seconds following the backwash? If not, once you finish washing, stop the pump, change the valce to rinse, then run it about 3 to 5 seconds. Shut down then switch to filter and the particles should stop coming back to the pool.

Jul 05, 2009 | Hayward SAND FILTER, PRO SERIES

1 Answer

No water coming out when I backwash. I cleaned


water level must be about the discharge (eyeball) in the pool to back wash. Check the hose connections to make sure that hoses off the the filer head are going to the right place Look for the words "Pump" , "pool" and "waste" molded into the valve. I've seen it a number of times where "Pump" and "pool" were connected the wrong way.

Jul 04, 2009 | Hayward SAND FILTER, PRO SERIES

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