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No such thing as 'sand pump'...
There's a circulation pump and sand filter.
filters don't pump water.
if no water is flowing, then pump is either not primed, or valves are closed.
Or water level is not at point of water entry into suction port.
submersible pumps need clearance between the impellers to function . They can become jammed from sand/gravel getting into the pump or the impellers wearing out from pumping sand in the water. Pull the pump and have it checked out by an accredited pump specialist.
Check that there is water in the hole for the pump to run in
Pressure tanks lose their Pre Charge pressure and have to be serviced. The well Pump needs to OFF. The Pressure tank needs to be emptied of water. There should be an air valve on the tank. Check the pressure .If this is a Bladder tank and Water comes out of the air valve- then the bladder is broken and the tank needs to be replaced. The Pre Charge pressure is set to 2 psi Below the cut-in pressure set by the pressure switch. If your system operates at 20-40 psi, The Pre Charge pressure will be 18 psi. Hope this helps.....
The sand point at the bottom of your well pipe has a screen designed to keep sand out of your water system. This screen has probably failed and that is where the sand is coming from.Unfortunatly this is not an easy fix. The well needs to be pulled and the sand point replaced.
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.
It sounds like the pocket developed for your wellpoint has collapsed. In order to redevelop it, you must pump water down into the well pipe for some time. I'm not sure how long. This opens up a pocket for your point so that it has no contact with sand. Of course, everything else must be flushed to remove the sand from your entire system. Goos luck!
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.
Shut off the pump, press down and rotate the valve handle to point to the backwash setting. Turn pump back on and run until water coming out is clear. Shut off and rotate handle to rinse setting, turn back on and run for 15 seconds. Turn off and rotate handle to filter and turn back on.
I have had the same problem there are a few things that can cause it to take longer to shut off, if you are running a sand point well that's usually a sign that the sand point is clogging up,if you have a sistern or a dug well check the screen on the end of the suction pipe,another possible cause is the water level has dropped low enough the pump is having to work harder to pull the water up, you should also check your pressure tank and the points for the pump if the points are sticking the pump will keep running till it builds enough pressure to trip them.Check for leaks in the suction line, if it is sucking air that would cause it to run longer to.I hope these suggestions will help fix the problem. Have a great weekend
sounds like the sand has clumped together inside filter. you can open filter and replace sand charge or dump into wheel barrow loosen sand and flush clean with hose and put back in
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