Question about Waterway Clear Water 22" Sand Filter System with 15hp Pump 2 Speed

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After vacuuming and backwashing, the dirt recycles back into the pool PSI is only 8 - what is wrong?

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Assure that the o ring is positioned onto the multi-port throat correctly. That could cause dirt to recycle into the pool water.It could also be issues with the multiport valve in the pool filters.

Posted on Mar 28, 2011

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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

2 Answers

My haward sand filter is running at about 20 psi is that normal


That 20 PSI does not mean anything to anyone that is going to help you. Every system will have its own "Starting Pressure". It all depends on how it is plumbed, what equipment is included (size and GPM), how big the pool is will address the issue of how much plumbing is involved, total feet & amount of fittings, valves, etc (mainly elbows create more restriction, raising the overall PSI, and if a Solar System is involved?

So, is 20 PSI normal, if you have a Solar System in an average inground pool in the backyard, then that could be about normal? If you have an Above ground pool with only a pump & filter, then that could be pretty high over normal.

The best thing is to backwash your filter very good, if possible use a sand filter media cleaner, available in most Pool/Spa Retail Stores. Follow the instructions on the label and proceed with the cleansing of the sand (media). Then when you turn everything back on to normal filter mode after the cleansing, make a note of the pressure! This will be "Your Systems" starting pressure. Take a "Sharpie" and write that number right on the filter tank. When the pressure climbs to 8-10 lbs over that starting pressure, backwash.

Jun 27, 2014 | Hayward SAND FILTER, PRO SERIES

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

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

Pressure is low on pump. Water is circulating very slowly. No noise or other problems. Noticed it after we vacumed and back washed. Pump is about 8 years old.


When you vacuum the pool you pick up alot of dirt, etc and this is caught by the filter. The more dirt that goes into the filter the more plugged it becomes until flow slows down. For this reason you need to clean the filter. If the filter is a DE filter it needs to be backwashed and new DE needs to be added to the skimmer basket. If the filter is a cartridge then the cartridge should be removed and washed with a spray jet on a hose. If the filter is a sand filter it should be backwashed. I hope this helps.

Aug 13, 2011 | Hayward 1.5 Hp Northstar High Performance...

1 Answer

My pool is a 24x52 intex and the pump wont work


Try backwashing the filter until the pressure is between 10 and 20 psi. (backwash for a couple min then run it on filter for a min and so on until the filter pressure is normal). If this doesn't work, the hose may be cracked/punctured, if so you will need a new hose.

Jul 16, 2010 | Aqua Vac Tiger Shark

1 Answer

Not filtering, back wash and waste won't work


Try consulting the owners manual for these pool filters. They have a whole section about the different settings on your multi-port valves. It also has a troubleshooting section.


http://www.backyardcitypools.com/images/hayward/pro-series-manual.pdf

Jun 01, 2010 | Hayward SAND FILTER, PRO SERIES

1 Answer

When i backwash my pool dirt comes back into poll as i vacuum


You either have a bad spider gasket or its time to replace the sand. When replacing use zeobrite.

Sep 17, 2009 | 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

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