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Pressure is causing filter top to 'blow off', Pentair TR60 sand filter

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When this happened at the job, I found out someone didnt open the pressure side shut off valve.

It may be time for your to replace the inspection port and/or change the sand. In addition to the closed valve, the threads were worn from much use over many years of service in my case.

The pressure should run about 15 to 20 in this filter ... what is your pressure?

Posted on Jun 03, 2010


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Triton 2 tr60 sand filter tank

My tank on a tr60 with only 20psi is the max I get on pressure well guess what the bottom is cracked, no problem get a new one. Not at almost 900.00 so I thought about it and came up with this, wet vac sand out disconnect the tank from lines, unscrew in side line on the top, remove fingers from the bottom assembly, in screw that pipe now all you have is a tank with 2 fittings and a drain. Go buy same fiberglass repair kit and start sanding inside and outside (outside is very important to get the gel coat off) and apply your glass I used a sheet then on top of that I used a mat and another sheet that is inside, on outside I used mat then four sheets first pict is the crack before doing anything second is the finished product that cost me 8 hrs of time and 34.00 kit for fiberglass from Home Depot. (NOTE WARNING I WOULD NOT ATTEMPT THIS ON HIGHER PRESSURE TANKS)


on Jul 18, 2015 | Pentair 140315 Swimming Pool/spa Sand...

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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.

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Lost high pressure to spa jets. Pump running , gauge on sand filter shows 30psi ?

backwash and try again if sand is over 3 years old replace but try on recirculate if ok you have a filter problem that I told you about if still no pressure see if impeller is plugged

Apr 22, 2013 | Pentair 1.0 Hp Whisperflo Pump

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Pentair sm2-pp3 valve, triton II filter. Upon

Lots of sand? You may have a broken lateral in your filter.

To repair, you will have to remove all the sand from the tank to physically inspect.

Might you have changed the sand this year? (top 1/3 needed to be changed every 3 to 5 years normally) If you changed the sand ... did you put water in the filter tank first? If not ... there is a good possibility you broke a lateral (a small pipe with slits in it) when you put the sand into the filter.

It could be that you have too much sand in the filter. Check the owners manual for the clearance - top of sand to top of filter.

Thanks for your interest in

May 14, 2010 | Pool & Spa

1 Answer

How do I drain the filtration tank for winter? Go to "waste" to get all water out of the filter and pipes ? I have the pentair sand dollar filter for a pool that has approximately 33, 000 gallons of...

There should be a drain at the bottom of your filter. There are really two drains in one ... one part lets the water out the second part (same hole) lets the sand out. Becareful not to remove the sand strainer.

Use a shop vac to blow and/or **** the lines out. Might be wise to lower the water below the suction and discharge lines (bottom drain excluded)

dont forget to pull the two (probably) on your pumps, one in the basket and one in the pump chamber.

alternatively, visit your manufacturer web site for specific instructions.

I dont think you will go too far wrong following my comment but Im not coming to fix any freeze damage :-)

Oct 14, 2009 | Pentair Sand Dollar 19" Filter with 1 Hp...

1 Answer

I installed a new pentair de filter and new multiport valve. at start up the filter pressure reads 40 psi. after multiple backwashes and rinses the pressure goes down to about 15 psi but slowly climbes...

If the pressure is 15 psi on recirculate, and high on filter, the problem is the filter itself, or the valve plumbing. The DE filters are unusal in the fact that they are plumbed like a sand filter, NOT the cartridge filter. If you could give details as to which filter AND multiport valve you have (look on sticker for model number on valve) it would help to figure out if the problem is in the filter or valve.

Jun 26, 2009 | Pentair "Pentair" In Ground Pool Pump ...

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Sand Dollar Filter

If sand is returning to the pool, the most common cause is the laterals, or the internal pipe is not connected to the valve properly.

If you have laterals with "slots" on one side and solid plastic on the other side, the slots have to be installed so that the slots face downward, toward the bottom of tank. If one, or more, are facing upwards, you are pulling sand right into the pool. If you have the newer laterals, with slots on all four sides, one, or more, may not be tightly in place.

If you have too much sand in the filter, that could cause this issue also. Pentair recommends using the #20 Standard Silica Sand in the filters.

Hope this helps!

Jun 13, 2009 | Pentair Sand Dollar 19" Filter with 1 Hp...

1 Answer

Sand dollar sand filter has great pressure on backwash but has very low pressure on filter then after a short time does not have any pressure water does not move at all. I changed sand and cleaned...

Generally, if the filter loses pressure in the filter mode, you have an air leak somewhere. When the filter is low on pressure, check your pump basket area. If there is air in the basket, that is the problem. It could be a bad o-ring under the basket lid, or the air release on the valve, but it will need to be found. Check for drips around the equipment also.

May 16, 2009 | Pentair Sand Dollar 19" Filter with 1 Hp...

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