Originally Posted by bill good
Bet the air temps are well above the 25 deg for the continious run specs. Try a computer cooling fan to reduce the heat. Water cool by passing inlet water thru a coil of copper around the body of the motor?
So i made a copper loop around the motor, but i teed it off at the feed pump output then fed it back at the brine output after the flow meter.
Helped with two things, kept the pump cooler, and lowered the feed pressure from 40psi to about 35psi, eventually dropping to 30psi at the end of my water making run. Pump did not overheat this time. I think I will add a larger ID copper loop. Tubing that relieves the pressure is only 3/16" ID so pressure is still over 25psi max. IR thermometer showed about 5F lower temp with each copper loop. Highest point of the motor got to as hot at 130F. I think a PC fan will add a lot more cooling. But I gotta get the pressure to below 25PSI.