Is it OK to run the bilge pump dry?

[mlrman]

I've done a search and didn't see an answer, but I am curious....

My first boat, a 1991 Sunbird Corsair 198, takes on a small amount of water. The bilge pump doesn't have a float switch yet, so sometimes I hit the bilge switch to see if any water pumps out. If there isn't enough water to pump out, will this hurt the pump??

Thanks.

 

[Lrider]

Re: Is it OK to run the bilge pump dry?

Not recommended the pump impeller is lubricated by the water in the pump

 

[AggieAsh]

Re: Is it OK to run the bilge pump dry?

Its ok to let it run for short periods of time, but as with most pumps its not a good idea to let them run for longer then a couple minutes. pumps cause friction, friction causes heat, and heat can damage your pump without water to cool it. it could kill it or at least shorten its life

 

[mlrman]

Re: Is it OK to run the bilge pump dry?

so it's ok to hit the switch to see if water pumps out, and if no water....switch off, right?

 

[5150abf]

Re: Is it OK to run the bilge pump dry?

Ya , that won't hurt anything just to kick the pump on for a bit, it isn't like an outboard pump that is rubber and actually rubs on the housing.

A bilge pump doesn't actually contact the housing, there is a small gap between the impeller and housing so you are fine.

I wouldn't leave it run for 30-40 minutes but long enough to see if you have water is fine.

 

[Bondo]

Re: Is it OK to run the bilge pump dry?

A bilge pump doesn't actually contact the housing, there is a small gap between the impeller and housing so you are fine

Ayuh,.... I Agree,... Ya won't hurt athing...

 

[Bass Tracker TX17]

Re: Is it OK to run the bilge pump dry?

I test mine for a few seconds before i go out. No issues.

 

[cedarjunki]

Re: Is it OK to run the bilge pump dry?

I test mine for a few seconds before i go out. No issues.

it depends on the style pump......


Centrifugal and diaphragm pumps can be
run dry for a period of time without damage,
whereas a flexible-impeller pump the
impeller will burn up within a minute or two.