I drained my fresh water tank and forgot to turn off the pump. Might have ran dry for almost a day before I found it. It still pumps but I was wondering how much damage I did.
I don't think the pumps will be damaged running dry. Now running it for a full day under any circumstance will take how ever many hours of the life of that pump I would imagine!
I just installed a Flojet Sensor VSD 4.5GPM Pump.
Here's a pic of the box:
Now, this is the owners manual. Notice bullet item #7 - Self priming / Runs Dry: