I know, you should never run your pumps dry. I am just quickly checking my wiring as I am doing the final lock downs of cabling, so quickly checked the pump to make sure the power run was good. For the 2 seconds that the pump was running though, it was a lot noisier then I expected. Just wondering if anyone else has ever done this, and confirmed that its because it was run dry and as soon as fluid goes thorough it it should get a lot quieter.
Should a pump make more noise when it is run dry?
- Thread starter bjcsoln
- Start date
I've done it, even while filling the loop sometimes it runs dry if you aren't pouring fast enough 
Definitely quieter once it's filled and bled.
Definitely quieter once it's filled and bled.
Marzipan
Well-known member
yup, dry pumps are noisy as there's no fluid to dampen it or keep the impeller centered and stable, so it'll wobble and bang around while it spins until the water pressure can stabilize it.
Jokester
Well-known member
Ah... careful with that. Doesn't take very long to kill a pump running it dry.
Yea, I literally ran it for like 2 seconds, just to make sure the power connection worked.
