Question about Pentair Fns Plus 48 sqft De Pool Filter (In Ground Pool)

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When pump starts up i get a small cloud of de in my inground spa every time it starts up. I have had the filter looked at by a pool repairman every thing looks good he is stumped as to this is happing pentair 48 de

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If all your grids are in good shape you have to look at your manifold real close for cracks and around the internal air bleed. When checking your grids be sure the nipples that go into the manifold are also in good shape and when reassembling make sure all fit comfortably and get them tight. Hope this helps, good luck.

Posted on Sep 12, 2010

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Our pool is about 90000 litres of water so how big filter do we need please


If you have a above ground pool go with the Cartridge or sand, and if underground go sand or D.E. All have their ups and down you should find out what you want from them specifically cause they all do varying amounts of the same thing.

Sand Filters
(Filters using literally sand)
For sand filters, on inground pools, I like to use a 30 inch tank diameter, which is a 4.9 sq. ft. filter surface area, and holds 600 lbs of sand. For small pools (under 20,000 gals), I might advise the next size down (24 inch tank), if the budget is tight. But never go smaller than a this for an inground pool.
Cartridge Filters (like a air filter)
I have a rule of thumb for cartridge pool filters. 100 sq. ft. of filter surface area per 10,000 gals of pool water, as a minimum. I like to see the 400 sq. ft. models on inground pools above 25,000 gals. These can go an entire season without cleaning in most cases.
D.E. Filters (Ground up fossilized algae)
Because they offer the most superior type of filtration, people tend to go small with DE, and buy a 24 or 36 sq. ft. DE filter. Ugh - go Big! Nothing below a 48 sq. ft. filter, and if your pool is over 25,000 gals, go with the Big Boy - the 60 sq. ft. filter.

Swimming Pool Blog


Also make sure the filter can take the amount of water that the pump is pushing through it.

Jul 23, 2015 | Pool & Spa

1 Answer

Can a person use a hayward de ec40 for either above ground pools or inground pools? if not why?


Yes as long as you are sure to match the flow rate of the pump to the filter. The biggest limit will be the low maximum flow rate the EC40 has. It will clog up to fast if installed on a larger pool...inground pools are generally larger (more gallons of water) than above ground. The pumps are more important to match as far as using inground rated units for inground pools and above ground for inground. Filters only care about flow rate and overall volume of water to keep clean.

John

Feb 22, 2011 | Hayward Pool & Spa

1 Answer

Not self priming itself. when it turns off the water pushes back out of the skimmer and pushes the basket up. it loses water and the pump cant re-prime itself.


PRIME PUMP, OPEN AIR VALVE ON FILTER. OR TAKE THE LID OFF YOUR FILTER AND SEE IF IT STARTS TO PUMP... YOU DO HAVE IT PLUMBED RIGHT? THE PIPE COMING OUT OF THE PUMP GOES TO THE FILTER !! I'M YOUR LOCAL POOL PUMP REPAIR GUY IN LONGWOOD FLORIDA. WHERE THE POOL IS ALWAYS OPEN

Aug 28, 2010 | Waterway Inground Pool Pump Champion No....

1 Answer

Hayward 1HP for in-ground pool: When I shut the pump off sometimes DE backflows from the filter through the pump and into the pool and accumulates on the bottom. The pump is about 10 years old and it just...


Usually caused by a small air leak somewhere on the pressure side of the system. A check valve on the line coming out of the pump going to the filter will solve problem.

May 05, 2010 | Hayward 1HP Super Pump II Inground Pool...

1 Answer

How do you backwash the pool using hayward pump system


BACKWASH THE FILTER.. NO LABEL ? SEARCH YOUR FILTER BRAND AND LOOK FOR REPLACEMENT PARTS (VALVE) OR GO TO YOU LOCAL POOL STORE AND SEE IF THEY CAN HELP YOU.. TAKE A PICTURE WITH YOU.. VOTE PLEASE IF'N I WAS OF HELP

Mar 18, 2010 | Hayward 3/4hp Super Pump Inground Pool...

1 Answer

Hi, bottom of pool is clean that morning, I run the pump and at the end of the day there will be quite a bit of dirt and what looks like tiny bugs on the bottom. It's like the pump is passing stuff right...


It may be the filter unit. If it's a DE filter, it's possible that one of the cartridges inside has a hole, rip, tear and the debris is getting back in... is it cloudy at all? Make sure that the diverter top is put back on in the exact same location as you had it before...

Aug 02, 2009 | Hayward 3/4hp Super Pump Inground Pool...

2 Answers

De filter pressure too high water is cloudy


backwash the filter from main drain until sight glass is clear-this will reduce filter pressure. After backwashing return gate valve to filter position, then filter from main drain only. check water chemistry. add a clarifier to water

Jul 28, 2009 | Pentair 3/4HP Pinnacle High Performance...

1 Answer

Losing pressure 2-3 min vacuum hose is attached to skimmer


de filters clog very fast i suggest put vac in pool put hose over pool attach a wet vac to get water out of hose remove wet vac and vac saves de and water

Jul 09, 2009 | Hayward 1HP Super Pump II Inground Pool...

1 Answer

Pumps Capacity?


# Aboveground filter systems and small inground pools (under 10,000 gals) should use a Low Head pump like a Maxim, or Dynamo or Power-Flo. # Pools from 10,000-20,000 gals can use a Medium Head pump like a SuperPump, a Pinnacle or Cygnet. # Pools over 20,000 gals could possibly use the High Head pumps like, Super II, Challenger, Ultra-Flo or the Sta-Rite pumps. # Pool/ Spa combos with at least 3 lines influent and 2 - 3 back to the pool, 2" plumbing may be able to handle the Ultra High Head pumps like NorthStar and the WhisperFlo

Aug 27, 2008 | Hayward 2 Hp Max-Flo Swimming Pool Pump...

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