Skimmer noise

[Chameleon]

Hey yall,
My skimmer started acting up a few weeks ago after I put sand in the tank. I went to sleep and the next morning it was overflowing and making a grinding mechanical noise. I figured it was overflowing from the new sand and the sound was from sand getting in the pump. I preceded to take apart the skimmer and vinegar bath the pump. After reassempbling its still making noise. Any thoughts on what I can do to stop this? The skimmer is a SKIMZ E-SERIES SM121 PROTEIN SKIMMER
http://www.skimz.sg/products/protein_skimmers/monzter_subpage/sm121.html
BTW its still skimming great its just making a grinding sound.
-Cham

 

[Troylee]

Sounds like it could be a bearing or something jammed in the prop.... Is it running hot??

 

[bige]

Sounds like it could be a bearing or something jammed in the prop.... Is it running hot??

Or some of that sand got in with the prop. I would take it apart and inspect the impeller.

 

[Chameleon]

Its not running hot. I did take the impeller out during vinegar bath but didnt see anything. it all looks great...i think.