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Eheim 2217 grinding noise...

15450 Views 30 Replies 10 Participants Last post by  Straight shooter
Hello Everyone!

I have a new Eheim 2217 canister (its only a few months old) I just cleaned it the other day, and decided to look at the impeller and make sure it wasn't dirty. This was my first time doing this part, because I did not have a need to do so previously. I put it back together, primed it, and there has been a loud rattling/grinding noise ever since. I know it is not due to air. I know what that sounds like, and have sat and gently tipped it to remove all the air. I have checked every connection, and they all seem fine. The hoses are a tad dirty ( I lack brushes for now) but I can still see through them, and have rinsed them. I am really bummed because this filter ran soooo incredibly quietly (first filter to ever do so as advertised!) before this last cleaning. I bought a new shaft, thinking maybe mine was warped, but it hasn't helped. I have noticed the hole in the impeller might be more oval shaped, however it has been rattling for two weeks, so this may be a result of the grinding, not a cause. I ordered a new impeller anyways, but am worried what to do if the sound persists after I put in the new impeller. Any information about this problem would be awesome!

Thanks Everyone!
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You also need to make sure the tiny hole(see photo, credit to zig on ukaps) near the impeller housing is not clogged by debris or mulm.
the hole is a curved channel to the impeller housing cavity to help purge air/relieve pressure inside the impeller cavity.
You can use bendable soft metal wire or thick nylon wire(fishing line) to clear the channel free of mulm,
or use compressed can air to blast the hole clear.



 

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I use this to pick out the old bushing inside the impeller chamber.
it doesn't take any effort with the right tool.
Just be REALLY careful not to scratch the inner wall.
Any scar/damage inside may cause turbulence when impeller spins and make it rattle. Do this at your own risk.
Simply mount the new bushing on the shaft and slide it back in the cup.

As PlantRich suggested, a flashlight is absolutely necessary when doing this.

Husky Precision Pick and Probe Set (4-Piece)-60004H - The Home Depot

Ok! How do you get the bushing out of the bottom portion? Mine is always stuck!
 

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Did you notice any reduction in flow? If it's properly primed and running quiet at first, somehow air got in there a while later as described, you may want to check the intake hose/prefilter/adapters(quick-disconnect, L-bend near the body) making sure nothing is clogged. A clogged intake could cause cavitation and noise. I have never seen this in my 2217, but my 2213 (12/16mm hose) would do that reminding me of cleaning the intake/outflow hose.

I even replaced both the bushings and shaft. It was quiet for the first few minutes, but now its noisy again :/ not nearly as bad as before, but not as silent as when I first got it, either.
 
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