I let my water pump run dry for 12 hrs. It still works!
I winterized my trailer (2017 FC 27 FB) in March and mistakenly left the water pump on all night while purging the water system. I turned it off the next morning when I realized my error. I then stored the trailer.
I picked up the trailer yesterday, tested the pump, and everything works just fine. No issues at all.
I post simply to let people know these pumps are more robust than you might think. Running it dry for a long time does not seem to affect them. (Not that I recommend that!)
27FB 2017 Flying Cloud
Ham Radio Callsign - VA3PGJ