Pump stops working overnight - leak?

[Fbskiracer]

I am new to pools.

I did a SLAM last week and added DE to the sand filter for the second time. Pressures were stable, up from 25 to 27

The next morning I heard the pump running loud. The water level was a little low and I added water. The pump was running but not with a full flow virous basket. Power cycling the pump seemed to solve it.

It did it the next night overnight again. I noted the pressure was up to 30 when that happened. There was some water leakage from the pump lid gasket when it restarted. I did a backwash and rinse cycle a couple of times.

Today it did it again.

I have noticed the skimmer is basically not functioning when this happens (bakset floating with debris no suction). The returns have low pressure.. So tonight i closed the floor drains to run more water through the skimmer in fear that the DE adding gunked a line or something.

After reading some more I am wondering if this is this a suction sided air leak form the pump lid gasket? Planning to leave the floor drains closed overnight as a test with just the skimmer running unless someone tells me differently.

 

[ajw22]

Pressure of 25 to 30 is too high. Your sand filter is dirty or clogged.

When did you last backwash it?

Has the filter been opened up to inspect or deep clean the sand?

Sand Filter Use and Care - Further Reading

www.troublefreepool.com

 

[Fbskiracer]

The pool has only been running for 3 months. Its all new.

The pressure of 25 is the baseline when it was new. I was told to backwashe between 30 and 35. On average I backwash every couple weeks and my pressure doesn't change.

I backwashed it over the weekend. We have had lots of dirt getting in the pool from doing the yard. Its all new construction and we didn't have a yard yet.

 

[Fbskiracer]

Overnight everything ran normal. I opened the deep drains to the pump this morning. Will see what happens.
I don't think my pressure has ever been beneath 24-25.

 

[cowboycasey]

how many returns do you have and what size pipe did they use? I have 2 suction side and 2 returns on 2 inch pipe on the same size pool and my pressure is 15 psi on a fresh filter and 2.5 psi on low... I now have a 1.67 hp VSP so bigger than your 1.5 hp...

what size return nozzles to you have? 1/2 inch or 3/4 inch?