When I opened my pool this year, the pump wouldn't come on. When I turned the power on, the motor would hum, but not actually start. I took everything apart and found that the shaft was siezed. I used some vice grips and WD-40 to get it spinning again. I also noticed that the cover on the back of the motor was heavily corroded. The pump motor is situated directly beneith the backwash output from my mulitport, which slowly drips. I think the dripping over time caused the top/back of the motor housing to corrode. In any event, when I put everything back together, I used duct tape around the back of the motor to hold the cover on and to prevent water dripping from the multiport valve from getting into the motor housing.
Everything worked for about two months, but this morning I noticed the pump wasn't on. When I inspected, I found that the ground wire was broken and the circuit breaker was tripped. My ground wire is a bare wire that runs from out of the ground on the left side of the pump station, over the pump motor - where it connects to the outside of the pump housing, and finally it gets wrapped around a pipe comming out of the ground, that looks like it may be a gas line hook up for a heater??? The ground wire was broken in between where it connects to the motor housing and where it is wrapped around the pipe coming out of the ground.
I temporarily connected the groundwire where it had broken and turned the power back on. When I did, I heard a loud pop and the breaker tripped again. I did the same thing again and heard another pop and the breaker tripped again. After a third time, I saw smoke coming from the back of the pump motor from under the area I had duct tapped.
Upon reflection, I think the duct tape was maybe a bad idea because although it was designed to keep water out, it proparly also keeps water in. We just had 24 hours of heavy rain and I'm guessing water got in the back cover and was held there by the duct tape, thus causing a short in the motor under the back cover where the wiring is. I'm going to take a look at it when I get home tonight, but my quesion is what's up with my ground wire? Why would it break? Could that be caused by the motor being shorted out? Can I just twist it together where it broke to repair it? Where does it connect to under ther gound? Should it be connected to the metal pipe on the other side? Do I need the ground wire? I'm just looking for information on the ground wire since I know nothing about it.