Grundfos RIP
- Thread starter TargetDummy
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Cavitation would occur in all of the impeller bowl and damaged all of the blades plus the noise would of been really loud.
Damage due to cavitation would be prominent @ the eye of impeller.
Quite common in the commercial environment.
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Which hasn`t happened looking at the photo.
Agreed, normally caused by an imbalance of inlet & outlet water flow / pressure.
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Being the most important part of fluid transfer other than the fluid itself.
Still doesn't explain spot wear like that 
Zooming in on the impeller eye I can't see any evidence of damage.
Can't you just scrape that debris off the impeller?
Could be debris picked up when the pipework was fed under floorboards etc.....normal for cowboy installs.
Can't you just scrape that debris off the impeller?
Could be debris picked up when the pipework was fed under floorboards etc.....normal for cowboy installs.
Unfortunately I don't have the pump anymore, but I did try previously to remove the debris and found that it was 'fused' or 'melted' into one lump with the blades.
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