running a bilge pump dry

[nik]

I dont know what make of bilge pump I have, but on a couple of occasions now, due to a sensitive console switch, I have found it running.

The last time, it could have been running for an hour or so, with no water to pump.

My question is, would the pump be damaged by running it dry? I gave it a quick check by filling the bilge and it seemed to work.

Any thoughts?

Nick.

[Nos4r2]

Only if it overheats the motor from continuous running.

[Biggles]

I have done this in the past with no fatal results. If its working now it should be okay.

[jyasaki]

Depends on the pump. Some are rated for run-dry operation, some aren't.

I think it primarily depends on the bearing materials, but may also be the no-load rpm being too high.

jky