i have a 9,000 gal pool. Hayward Super 2 pump, Hayward swimclear C3025 cartridge filter, aqua rite salt cell.
My filters are 3 years old, didn't look dirty, but my pump pressure has been around 25-28 PSI within hours of cleaning cartridges, it became clear they needed replaced.
Last Saturday, during the NBA finals, my neighbor called to say there is water flowing down the street, coming from my house, I looked at my pool and the water level has fallen 3 feet, I went out to the pump and water was shooting through the drain plug, draining my pool out to the street. The pump was on, and the drain plug had been shot out.
I have since replaced the cartridges and my pressure is now 9PSI, right where it should be, I also ordered a new drain plug and installed it.
My question is, I am pretty sure, but wanted confirmation, was the high filter pressure 25-30 PSI enough to force out the drain plug? That pressure doesn't really seem high enough to force a 1 1/2IN threaded drain plug out of the filter assembly. but apparently it was.
Would there be any damage to the internal threads in the filter itself after being forced out at high pressure?
I inspected them and they didnt seem too bad. I installed the new drain plug with teflon tape, and with the new low pressure it seems ok.
Do I need to live i fear that my drain plug will randomly be shot off?, and my pool totally drained when im not home, and not able to shut the pump off.
I dont want to come home to an empty pool, flooded yard and burned out pump motor.
I'm worried it could happen again, the drain plug doesn't seem to be that strong, I went to home depot bought a 1 1/2 in male adapter and installed a facuet tap on it, so I could drain my filter without having to remove the drain plug, but it wasnt designed for the filter and the o ring i purchased didnt seem to fit well, and it leaked ever so slightly, so I decided to remove it and install the hayward drain plug, but after failing me before I dont have much faith it wont happen again.
Please let me know if I need to be concerned or if all should be well now, sorry to be rambling, but wanted to write down all that happened.
Thank you for your response