It definitely takes time and patience.
After a lot of adjusting main siphon drain gate valve by 1/8 turns, and return pump gate valve by 1/8 turns, I had them balanced and silenced.
At about 1000+ GPH, all was silent and working great. But, I could not shut down and restart without being 1/4" from overflow onto the floor. If I unplugged for 15 seconds, then continued the re start, it worked.
After throttling down the flow to about 900 GPH, I could power down, restart, with no risk of overflow. But, my drains in the sump are under water by about 3". Next weekend, when I'm back, I'll try with them just 1" under water.
The thing is, the depth of the drains in the sump must be adjusted when the pump is running, and all is in equilibrium. Other wise, if they are too shallow at start up, they may be out of the water level when it’s all up and running.
So, hopefully it all works out. I thought I was going to have to move the basement sump 20 ft closer to the DT, to eliminate much of the horizontal run. That was a depressing thought.
Tom
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