crackling noise coming from filter

nabril15

Bronze Supporter
May 22, 2011
420
Miami, FL
Hello Thursdayers
I hear a constant cracking-type sound coming from my filter, and despite having cleaned it 2 weeks ago, I see the pressure at 20psi; that is double the usual operating pressure. The crackling noise sounds as though the plastic breather tube is rattling inside, perhaps.
In addition, my Navigator crawls along the bottom of the pool.

Is it possible that something is stuck in that filter that's causing all this rauckus?? Yes, I can take it apart, I know.
 

JamesW

TFP Expert
Mar 2, 2011
17,330
Your pump is way too big. When it's time to replace it, definitely go with a variable speed pump and turn it way down.

You can downsize your impeller if you want. It would save you a lot of money on power. It's not too difficult.
 
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nabril15

Bronze Supporter
May 22, 2011
420
Miami, FL
Your pump is way too big. When it's time to replace it, definitely go with a variable speed pump and turn it way down.

You can downsize your impeller if you want. It would save you a lot of money on power. It's not too difficult.
Thank you James
How did you determine that my pump is way too big? I inherited the pool when I bought the house. They had a 2hp pump, and when it broke, I replaced it with 1.5hp single speed.
The navigator used to climb walls, but it doesn't any more. Aside from a possible leak somewhere, why is 1.5hp too much?
Thanks
 

JamesW

TFP Expert
Mar 2, 2011
17,330
In my opinion, no residential pool needs more than 1.0 total hp for normal filtration.

In fact, even at half speed on a two speed pump, the filtration is more than adequate.

If the suction cleaner is not working, it's a problem with the cleaner or the suction line.
 

nabril15

Bronze Supporter
May 22, 2011
420
Miami, FL
In my opinion, no residential pool needs more than 1.0 total hp for normal filtration.

In fact, even at half speed on a two speed pump, the filtration is more than adequate.

If the suction cleaner is not working, it's a problem with the cleaner or the suction line.
thank you James. I will keep that in mind when this pump reaches the end of its usefulness.
Is 1 HP enough to have a navigator do its thing and climb walls? My pool does have a spa bench, but I've used it 3 times maybe as a spa, and I only turn it on to circulate water through the pipes during a SLAM; it has an air blower.
UNfortunately, the pool builder only put in 2 return holes for a 16x30 pool, so will 1 hp circulate the water enough??
 

nabril15

Bronze Supporter
May 22, 2011
420
Miami, FL
Is it normal to hear the air bleed tube shake around inside the filter? I've hear that happen since I bought the house. I assume that it moves with water flow inside the cartridge.
 

nabril15

Bronze Supporter
May 22, 2011
420
Miami, FL
Mine has a small rubber retaining grommet that keeps it stabilized to the top of the filter's vertical support rod. You might try to find the illustrated parts breakdown for that filter to see if everything is there.
Thanks Tex. I wish that mine had that. The bleed tube sits loose in the inner hole of the cartridge, and the rounded top of the filter assembly leaves room up top.