I'm hoping someone can shed some light onto what's going on with my pump. I've been searching and searching the forum for the past few hours, but can't find anything that's quite like my situation.
Pump: A.O. Smith Centurion 1.5HP
Problem: pump has been manually turned off for the past 2 weeks. Tried to turn it back on yesterday to start fighting an algae attack. It would turn on for several seconds (sounded like a grinding noise) and then switch off. I'm assuming it was the thermal trip. After several attempts, and waiting for the weather to cool off (110* Vegas sun!) it finally primed and water started coming out the relief valve and started running smoothly.
We need to drain the pool to get our CYA levels down, so we switched the pump and drained to waste. We turned it off last night around midnight and this morning, when trying to turn the pump back on for another round of draining, it's doing the same thing--starts for several seconds, and shuts off. Only today, I've covered the pump with bags of ice to keep it cool, and after way more attempts than yesterday, it still won't "kick over" and get going.
I've tried running hose water over the basket area while starting the pump, to no avail.
Up until now, the pump has been working just fine, been on a timer, running 10 hours a day. It was manually turned off 2 weeks ago and now it won't start back up normally. One thing I am wondering...last night after turning the pump off, I left the relief valve open. Could this have allowed air into the system and caused it not prime now? Or could the open valve have caused problems in another way?
Any and all help is appreciated, as we are trying to fight an algae outbreak and can't do so until our pump is working