- May 3, 2007
- 16,974
- Pool Size
- 20000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Hayward Aqua Rite (T-15)
Double check those two gate valves on the suction side of your pump. Both should be completely open (CCW).
Best way to check them is to grab a garden hose, remove the nozzle and run water over them. When you hit the air leak the air bubbles will stop. Don't underestimate this method for finding a suction side air leak. I have always had very good luck with this method. Worse way to check them is to grab your wrench and tighten them and end up breaking them off as others have done. Same goes for your gate valves. Running water over them is quicker, easier and safer then putting a wrench to them.Isaac-1 said:Don't forget to check the drain plugs on your pump, those can be a source of air leaks and are easy to miss.
For a test why not alternate shutting one down with the other wide open to eliminate pool and/or spa as air bubble source?DW said:I leave the pool side gate valve wide open, unless I running the spa only. Then the pool side gets closed and the spa gate valve gets opened. Again, normal operating for the past 4months has been pool side open; spa side slightly open just to provide some circulation.
if both gate valves are wide open then the spa returns(4) can't keep up with the volume being lost in the drains and the spa levels drop.
Tonight I wrapped the joint leading from the tee to the filter basket and the other two joints leading into the tee with electrical tape and rant he pump for about 5 minutes.....no change in the air bubble against the filter basket lid and bubbles still coming from the pool. I was getting dark so it was hard to tell if it was any better. I'll have to get started a bit earlier tomorrow.
I agree with the first three but a failing motor does not change the pressure. A failing motor will just shut down.DW said:suction line restiction
pressure side restiction before the filter gauge
bad impeller
failing motor
How do you flush the impeller? I can try back flushing the suction lines, that won't be hard.