Question about Hayward SAND FILTER, PRO SERIES

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Sand shoots out of my return flow when I turn on the filter. Why?

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It could be any of the following.
1. If you recently added sand into the filter Sand might have been poured in to the standpipe when being added to the tank.
2. A broken or worn out lateral . (One of the slotted tubes) on the bottom of the tank that water passes through on it way back to the pool. A lateral acts as a strainer keeping the sand in, lets the water out.
3.. A cracked standpipe the tube that sits in the tank, connects into the filter head
4. Filter head O-ring maybe dislodged. It's located where stand pipe connects, to the filter head inside the head.
5.. The hoses on the filter maybe hooked up backwards. The hose going from filter to pump may be connected from filter to pool.

Posted on Jul 05, 2009

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Low flow code 90 brand new intex sand filter


when mine does this, I open the skimmer cover until I can hear air escaping. Let some air out and then turn the cover back on. Also I will turn the valve open on the intake hose and then put back on. Just keep doing things like that to get the water flow started. It eventually starts.

Jun 22, 2014 | INTEX Sand Filter Pump

1 Answer

Sand shooting back in pool


If you took "Pump" apart, you wouldn't have found broken laterals. You will need to open up the "Filter" to find laterals. If sand is ending up in the pool, you either have a broken component within the filter or you have an overfilled filter tank and during backwash sand is lifted up into the valve, and upon returning valve position back to "Filter" the residual is blown back to pool via the return inlet. If this is the case that is why always follow label / owners manual directions as to Quantity of media to add. More is not necessarily always better!

Jun 19, 2014 | INTEX Sand Filter Pump

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

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

Pool filter problem


You have a problem ...

Can you see the little tube that bleeds air out of the return pipe? If not ... see if you can find it and get it to the top of the filter.

Still have sand? You may have a cracked lateral ... remove the sand and check all the laterals. Replace any that are broken.

When you refill the sand ... be sure to put water in first to soften the beating the laterals take from the falling sand.

Jun 14, 2010 | Hayward SAND FILTER, PRO SERIES

1 Answer

How do i change the sand in the filter? I am getting sand in my pool.


You will simply remove the old sand from your pool filter and follow the instructions from your users manual like you are adding sand for the first time. In case you don't have it, I am going to paraphrase it for you below.

1. Be sure correct amount of filter sand media is in tank and
that all connections have been made and are secure.
IMPORTANT: To prevent unnecessary strain on piping system and valving, always shut off pump before switching Filter Control Valve positions.
The correct amout of sand can be determined with this link: http://www.backyardcitypools.com/pool-filters/Filter-Sand-Requirements.htm

2. Set your controls to the backwash position.

3. Prime and start pump according to pump instructions. (be sure all suction and return lines are open), allowing the filter tank to fill with water.

4. Once water flow is steady out the waste line, run the pump
for at least 2 minutes. This initial backwashing of the filter is recommended to remove any impurities or fine sand particles in the sand media.

5. Turn pump off and set valve to RINSE position. Start pump and operate until water in sight glass is clear—about 1/2 to 1 minute. Turn pump off, set valve to FILTER position and restart pump. Your filter is now operating in the normal filter mode, filtering particles from the pool water.

6. Adjust pool suction and return valves to achieve desired
flow. Check system and filter for water leaks and tighten connections, bolts, nuts, as required.

7. Set your filter to the "filter" position.

May 22, 2010 | Hayward SAND FILTER, PRO SERIES

1 Answer

Sand filter is a week old,has been back wash twice but still having trouble,with kpa over 100


This can be a few different problems I will list them out for you:
  1. Make sure you are following the instructions in your Hayward owner’s manual. The sand bed may be clogged with mineral deposits or other material that will not backwash away. Some calcium based chlorines and other alternative sanitizers could cause a build-up in your sand bed. You may need to change the sand.
  2. Before you change the sand in you filter, try removing approximately 1” of the top layer of sand, and replace with the exact amount of sand removed. This sometimes rids the sand bed of the deposits clogging the filter.
  3. You may have to clean you filter system with a special filter cleaner, check with your Authorized Hayward dealer for proper procedures.
  4. Check to see if there is a closed or partially closed valve on the return piping.
  5. Your pump may be too small to provide sufficient flow for proper backwashing. Your filter will filter properly, but if your pump does not supply at least 60% of the filter’s designed flow rate, you filter will never backwash completely. Refer to the label on you filter for flow rate requirements. It may be necessary to upgrade the pump or downgrade the filter.
Your pump may also be exceeding the maximum allowed flow rate of you filter causing excessive backpressure. Check you Hayward filter owners guide or the operations label on you filter for the maximum allowed flow rate. You may have to downsize the impeller or pump to a lower horsepower or change the filter for one that will accommodate the pump’s flow rate. If allowed to continue, a pump that exceeds the recommended flow rate of a sand filter could cause the sand bed to channel (small channels in the sand that allow debris to pass unfiltered). This would cause debris to by-pass the filter.

Hope this helps you

Jan 02, 2010 | Hayward SAND FILTER, PRO SERIES

1 Answer

Back - siphoning when the pump turns off.


Make sure you dont put too much sand it will come back out.Put the correct amount and bump the pump correctly.

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