- May 3, 2007
- 16,930
- Pool Size
- 20000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Hayward Aqua Rite (T-15)
One of my original concerns was a partially clogged impeller. I know that you checked via the pump basket but that doesn't mean it is completely clear either. I was trying to eliminate all other possibilities but more and more it looks like the impeller may be the problem. The reason I think this is because a partially plugged impeller acts as if the RPM is slightly reduced. Flow rate decreases, wattage decreases and the head curve shifts downward. All symptoms of what seems to be occuring. It looks like it is only about 5% reduction which is not much but could be more of an issue at lower speeds which I think you are experiencing. However, I don't want you to go to the trouble of taking apart the pump if that is not the problem but maybe your PB can do that if willing.
On high speed, does the pump seem to shake or vibrate a lot?
On high speed, does the pump seem to shake or vibrate a lot?