Impeller for Eheim 2217

[nesone]

After working more than one year and jerry cans at the time of cleansing, the impeller can be heard in 2217, ie. "crunching".
The flow is the same as when it was purchased, excellent.
At the impeller no signs of physical damage, and that is wasted.
Do you have any idea what to do, how to remove the unpleasant sound.
Do I lubricate the impeller, and what?
Thanks in advance for your response.

 

[spike38]

Check for air leaks(sucking air)
Or catching air bubbles in the water.(mine will make this sound)

Maybe, The impeller may just be getting some wear.
If so, I would order one, And have it on hand.
But I wouldn't replace it until it needs it.

Spike

 

[duanes]

Crunching, crackling sound is usually a sign of cavitation. Air bubbles collapsing into the impeller.
The area the impeller rides in (volute) could be wearing causing it to wobble, which can cause cavitation, but there are many reasons and many things to check that could cause it.

 

[MadRussian79]

Usually means either the ceramic shaft is worn or the impeller is going. Both of which can cause cavitation creating that sound.

 

[HarleyK]

Crunching, crackling sound is usually a sign of cavitation. Air bubbles collapsing into the impeller.
The area the impeller rides in (volute) could be wearing causing it to wobble, which can cause cavitation, but there are many reasons and many things to check that could cause it.

Sorry, but hobby pumps are not powerful enough to cause Cavitation.

Probably just air getting in somewhere. Hold the spraybar under water and see if you can see air come out. Lube all o-rings.

Hope this helps,
HarleyK

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