Little Giant pump running hot?

[Frank Mularo]

I just set up a three tank system with a Little Giant 3 MDQ SC pump as a return. It's pumping from the floor to two tanks at about five feet and one tank at eight feet. I have the tanks plumbed so that they are all flowing to the sump independently, and I have a bypass system so I can isolate any or all the tanks. I just fired it up and within an hour, that pump was too hot to touch. I opened everything fully including the bypass so there would be less backpressure, but it's still boiling hot. I'm not concerned about heating the water in the tanks, but I don't want the pump catching fire. Is it common for these pumps to run so hot?

 

[sedatedforsafety]

if I remember right the little giants have a fan to cool the motor. Is the fan working, can you feel air being sucked in the back and blown across the motor?

 

[Anonymous]

LG do run really hot even with that little fan in side. One short coming is hte quality of the bearing. When low in oil, it does get hotter than usual. I usually use Johnson & Johnson baby oil for lubr. it periodically, otherwise it can get locked up bad.