What is causing low water pressure in aboveground pool?

I have recently bought a house, and it already had a aboveground pool in place. This is the first time I have ever had a pool. The pump and filter is setup, but I seem to have issues with maintaining water pressure to vacuum and filter the pool. The pool has a cartridge filter.

I have cleaned the filter with a hose, and put it back in. Once I start the pump it runs fine for about 1 hour, then the pressure seems to drop and unable to vacuum the pool and there is barely any pressure coming out of the jet.

I am wondering if anybody has any tips they would be able to give, so I can keep the pump running all the time. I was told by the previous owner that filter was bought last October, so it very new.

Thanks in advance for your thoughts.

4 COMMENTS

  1. i own a pool company.it sounds like you have an air leak some where between the pump and the jets in the pool.also check the gasket in the inside of pump pot lid.if it is cracked or chewed up there is your problem

  2. Check the trap. There is more than just the filter to consider. My experience is that there is a trap on the pump, to capture leaves and other debris that are missed by the first trap, which is usually up near the top of the water line. My experience is with in-ground pools, but the mechanics should be similar

  3. If i understand your question correctly, the suction pressure on your vacuum line drops off as you clean your pool. If the pump is not set to the correct setting when vacuuming it can cause a drop in pressure. When i cleaned the pools i serviced i always closed the main pool drain line and plugged any extra skimmer lines other then the one i was using to maximize the pressure in my hose. If all these things are being done you could have a clogged suction line or your filter is filling up to quickly for the pool size you have. The best thing would be to have a local pool company come do a service test on Your filter and pump, over time they just go bad.How old is the pump and filter? Did the previous owner take care of it? has it been rebuilt? these are some questions that could lead to a better idea of what is going on.

  4. buffalo ny: here from the skimmer basket [keep clean with sufficient water about half full to not let the pump starve for water but instead get a skimmer whirlpool of dirt] to a strainer basket [keep clean with no trapped air] to the pump, with a hayward sand filter, you vacuum to "waste" and the debris exits out the drain line. when you "backwash" the sand filter here for 30-60 seconds, it’s ready to run in the "filter" position and shows 15 pounds per square inch in the high pump speed or much lower psi in the slow pump speed. look up on the internet the directions for your type of a setup after you plumbing snake the connector hoses for leaves. for my 24 ft diameter round above ground pool of about 12,000 gallons of water.

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