Tunze 1073.040 making Crackling noise

[codeblue48]

I have a Tunze 1073.040 that I cleaned up nicely and placed in storage for a long time.

I went to fire it up today and it runs well minus a crackling noise. It sounds sort of like rice crispies. Here's a video of the sound. (Hope this is allowed?)

http://youtu.be/uAelY7WyJ_c

I inspected the impeller and it looks good. Any ideas?

Thanks in advance

 

[rvitko]

It sounds like just air in the pump, small air bubbles tend to stay trapped in the pump for up to a few days and eventually purge out, the only way I have found to immediately alleviate that is to assemble it under water.

 

[Munster49]

Did you happen to soak it in vinegar?

 

[rvitko]

Usually the main thing I see on stored pumps is salt dried in the pump can seize them up, it happens on my salt water mixing pump unless i store it wet or run it in freshwater before putting it away, they won't start at all then, so I think this is just some air inside, it sure sounds like it.

 

[codeblue48]

Thank you very much guys. I hope that is the issue, I will go and assemble it under water now and report back.

@Munster49 I did run it in a water/vinegar solution hoping that it would help, but it did not. Hopefully it's just air like Roger says.