I'm trying to label our pumping station so that it becomes a bit easier to diagnose later in the future if needed. Here's a few photos of the station.
Close up of inlets
I have 2 questions with the setup which I believe are related. I can follow flow from pump to filter to chlorinator to pool. Where I'm a bit lost is on the inlets and the Jandy Valve.
From the close up photo, I know the pipes on the right hand side (the one in the upper right and the vertical with the broken valve handle) are inlets. The broken valve handle I believe controls the dedicated suction/vacuum line when we first tested it 3 years ago. My main question is the pipe on the on the left entering the Jandy Valve and the Jandy Valve itself. In the current position, the system runs flawlessly. If I move the Jandy Valve to the left or right position, the pump seems to shut down as there's no flow. I'm thinking the pipe on the left is the main drain line but I'm not entirely sure. I'm also afraid to let the pool pump run with what appears to be no flow and have it burn out. Anytime I move that Jandy Valve to the left or right, the pump basket begins to drain as well.