CarlSMarston
New Member
The impeller cover keeps popping up on our Fluval 405. It has been a persistent problem for years. I showed the problem to Hagen but they were unable to help.
The initial observable's are: noisy filter, a cover that has popped up every time I clean the filter, and significantly reduced flow.
I diagnosed the problem myself, with no analytical equipment, so I may have missed something. Fluval customer care had never seen the problem and had no solution.
Analysis: the impeller creates high pressure that drives the filter, so the cover can only pop up as a result of pressure from the impeller. Next, lets look at what holds the cover in place.
Inspection of the seat of the impeller cover:
The seat and clips are fine - no bent or worn edges, and nothing obstructing the cover. However, on the filter head, the part that the cover clips into (the female part) has bent.
Conclusion:
High pressure in the impeller bent the female part of the cover clip on the filter head.
Perhaps I overfilled the carbon causing the back pressure to spike, benting the female part of the cover clip.
Watch state. Reducing the medium, checking the bent part and will see if the problem is resolved.
Has anyone else had a similar problem resolved?
The initial observable's are: noisy filter, a cover that has popped up every time I clean the filter, and significantly reduced flow.
I diagnosed the problem myself, with no analytical equipment, so I may have missed something. Fluval customer care had never seen the problem and had no solution.
Analysis: the impeller creates high pressure that drives the filter, so the cover can only pop up as a result of pressure from the impeller. Next, lets look at what holds the cover in place.
Inspection of the seat of the impeller cover:
The seat and clips are fine - no bent or worn edges, and nothing obstructing the cover. However, on the filter head, the part that the cover clips into (the female part) has bent.
Conclusion:
High pressure in the impeller bent the female part of the cover clip on the filter head.
Perhaps I overfilled the carbon causing the back pressure to spike, benting the female part of the cover clip.
Watch state. Reducing the medium, checking the bent part and will see if the problem is resolved.
Has anyone else had a similar problem resolved?