Question about Hayward S166T Pool Filter System w1 HP PumpS166T92S ()

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Hayward sand s166t. We opened pool 2 wks ago crystal clear. Hooked up filter after 1-2 days water went cloudy and is now thick milky texture. Also had 7 days of heavy rain. But the pressure seems lower on filter this year (13 now used to be 17) and when we try to backwash, when the handle is engaged, the flow is low. If we push down on handle (unengaging it a bit) the backwash pressure is normal but I don't think that is right. Chemical levels are all perfect. Emptied sand and cleaned out filter and restarted with no results.

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  • Hayward Master
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Make sure hooked up correctly top out front in

Posted on Sep 13, 2017

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Posted on Jan 02, 2017

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SOURCE: multi-valves on hayward sand filter mixed up

Key Cover Assy needs new spider gasket. If it is a newer model the gasket is made into the key cover and it will have to be replaced

Posted on May 02, 2009

john224
  • 1378 Answers

SOURCE: Control Valve handle wont stay in position

The valve should be about $100. We sell it for 90 something. You can rebuild them with gaskets and the spring. There should be a model number on yours, care to post it? Something like SP711, SP714, etc.

www.arrowmotor.net

Posted on Jun 14, 2009

  • 8 Answers

SOURCE: My new Hayward Pool Sand Filter won't backwash.

Have you ever had the top valve apart? If so, the postion of the inside diverter was not replaced correctly. Make sure the solid portion of the diverter lines up with the 'Closed" port on the valve. Once this is lined up, everything else will line back up into the correct position.

Posted on Jun 20, 2009

john224
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SOURCE: Where can I get a seal for the flow valve on a

www.arrowmotor.net and use the contact button. You would likely want the rebuild kit that includes all the gaskets and o-rings.

Be sure to include the model number off the valve, which should have SP at the beginning.

Posted on Jun 21, 2009

  • 128 Answers

SOURCE: hayward sand filter not filtering small particles

You probably have too big of pump. It is pushing the finer stuff right back into pool. Try adding a clarifier. Don't backwash either until the pressure goes up.

Posted on Aug 23, 2009

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I have a Hayward s166t sand filter and no matter what setting I have it on tons of water is coming out of my waste line! This is my 1st pool and 1st sand filter!!


I used to work in a municipal swimming pool. 325,000 gallons!

It sounds like you have the sand filter on to clean if water is coming out of the waste line. That is called 'back flow'.

Basically, the water from the pool comes into the top of the filter and the muck settles on the top. You need to add Gypsum (Aluminium Sulphate) to the water which is a floculant. This makes organic material form into a layer on top of the sand. The flocculated layer further adds as a filter. You need to regulate the flow of water into the filter as too fast and you force sand into the pool.

When you clean the sand filter, you do a back flow. So by altering valves, you put the water from the pump into the bottom of the filter and the water lifts the muck and dirt off the top of the sand and discharges it to waste. It is important to also regulate the flow as too much will discharge the sand. That happened in our municipal pool and discharged 6 tons of sand in the space of 2 years.

your owners guide is here. Take a look at the pipes, valves and pump and work out where the flow is going to.

http://www.hayward-pool.ca/pdf/manuals/ProSeries-S166T-S166T1575XS-S166T1575XSN2.pdf

http://www.hayward-pool.ca/pdf/manuals/ProSeries-S166T-S166T1575XS-S166T1575XSN2.pdf

Jul 03, 2016 | Hayward Pool & Spa

1 Answer

Hayward pro series 220 not working. On filter mode continuously and pressure never goes up. Return pressure stays strong. water stays cloudy. I have changed sand, down pipe and now the multiport. Basi


This is not an uncommon situation for sand filters(persistent or slow to clear cloudiness). Mostly, these days , pumps are oversized for filter flow rates resulting in water being ramrodded through sand bed. The first thing to do is balance the water. If chlorine not present, double the suggested dosage. We are also assuming that the m.port valve has not been disassembled. the best sand to use is a #20 or #2 white quartzite. If problems persist , then consider filter aiding media to help the sand bed trap finer particles.

Oct 01, 2014 | Pool & Spa

1 Answer

I have a hayward s166t filter, guage reads 0 and sight glass water does not swirl when backwashed


Does it show pressure when in "Filter" mode?

If not, then your pump is either not primed, Impeller is plugged, or there is not enough water in the pool, you are sucking air.

Jul 18, 2013 | Hayward S166T Pool Filter System w1 HP...

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

Hayward s166t sand filter has sand in sight glass during backwash


did you get sand in vertical tube if so it will take time to get out of line

Jun 12, 2012 | Hayward S166T Pool Filter System w1 HP...

1 Answer

We have a hayward sand filter model sp 711 13 for our vinyl lined pool. We are having alot of trouble getting the pool to clear up. When we opened it for the season, it cleared up great and was running...


How long is it since the sand in the filter was changed? How long has it been installed? If the water is clean but cloudy, get some kind of flocculant from your pool supplier. Follow the instructions carefully as your pool will need to be bavkwashed on a frequent basis.

Regards alshipman@gmail.com

Jun 27, 2011 | Hayward Pro Series Sand Filter -36" Tank

1 Answer

I have a hayward s166t that came with a pool i purchased last fall. how do i set it up for operation?


For INSTALLATION:--- Only simple tools (screwdriver and wrenches), plus pipe sealant for plastic adapters, are required to install and/or service filter.---------And to continue operation procedure, click this link below and follow the procedure:--- http://technoanswers.blogspot.com/2011/06/hayward-s166t-high-rate-sand-filter.html --------------- This should help.Thanks.Helpmech.

Jun 19, 2011 | Hayward SAND FILTER, PRO SERIES

1 Answer

Water comeing out cloudy and makeing suds in pool


There could be a few things causing these problems. How old is the sand in the filter? Filter sand looses its filtering ability after 3-5 years and needs to be replaced. If the sand needs to be replaced, make sure you get actual pool filter sand. A lot of big box and home improvement stores sell play sand as filter sand. That will cause your pool to stay cloudy and never clear up. If the sand is less that 3-5 years old, you may need to clean it with a liquid filter cleaner that is poured through the skimmer. This works quite well!

Another issue causing the cloudiness and bubbles could be the type of chemicals you are using. I know that shock from big box and home improvement stores cause the water to be cloudy. Algaecides from these stores also cause foaming.

Jun 15, 2011 | 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

Pool filter not doing its job


try using a clarifier that you add into the skimmer such as Clearex 500.
The flocculent only makes particles drop to the pool floor, a liquid clarifier actually coates the sand and will filter smaller particles. Also, check the o-rings on the backwash valve. If the o-ring(s) are damaged it may be letting some water bypass the filter.

Sep 06, 2009 | Astral Products Difusser 1/2 Hp - 1 1/2 Hp

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