I hope some of you long-term Eheim Classic owners can help me with some troubleshooting, because my 2215 is driving me crazy right now.
I've had the filter running on my tank for over 3 years now, and until now have had no serious trouble. About two weeks ago, though, I noticed the filter flow had suddenly decreased markedly. I took the whole filter assembly (including the intake and outtake lines) down for cleaning. The problem turned out to be a clog in the intake line, but to be safe I also cleaned the filter itself thoroughly, including the impeller assembly. (I don't clean the impeller frequently, partly because I am afraid of damaging it and partly because the filter rattles a bit afterwards until some fish slime builds up to relubricate things.) Before the cleaning, the filter was almost completely silent.
In the past when I've cleaned the impeller, all I've done is to pull the impeller blade/magnet assembly off the thin shaft they fit over, rinse the impeller blades/magnet off and use a small brush to gently clean out the impeller well, then slip the impeller assembly back over the shaft and close things up. This time, though, I accidentally pulled that thin central shaft out. I carefully put it back into place, and when I reassembled the unit everything fit correctly and looked fine. Ever since that day, though, the filter has been making a continuous, steady, high-pitched whine. (The sound quality and volume almost perfectly mimic those of an air pump, for what it's worth.) The filter is circulating water well, it's just incredibly noisy. I've already taken it down once to see if I could spot any obvious problems, but reassembling the impeller didn't make any appreciable difference in the noise. This tank's in a bedroom, so I need to get this problem fixed (even if that means buying a new filter, although I hope it doesn't come down to that). Any suggestions as to what could be wrong, and how to correct it?
I've had the filter running on my tank for over 3 years now, and until now have had no serious trouble. About two weeks ago, though, I noticed the filter flow had suddenly decreased markedly. I took the whole filter assembly (including the intake and outtake lines) down for cleaning. The problem turned out to be a clog in the intake line, but to be safe I also cleaned the filter itself thoroughly, including the impeller assembly. (I don't clean the impeller frequently, partly because I am afraid of damaging it and partly because the filter rattles a bit afterwards until some fish slime builds up to relubricate things.) Before the cleaning, the filter was almost completely silent.
In the past when I've cleaned the impeller, all I've done is to pull the impeller blade/magnet assembly off the thin shaft they fit over, rinse the impeller blades/magnet off and use a small brush to gently clean out the impeller well, then slip the impeller assembly back over the shaft and close things up. This time, though, I accidentally pulled that thin central shaft out. I carefully put it back into place, and when I reassembled the unit everything fit correctly and looked fine. Ever since that day, though, the filter has been making a continuous, steady, high-pitched whine. (The sound quality and volume almost perfectly mimic those of an air pump, for what it's worth.) The filter is circulating water well, it's just incredibly noisy. I've already taken it down once to see if I could spot any obvious problems, but reassembling the impeller didn't make any appreciable difference in the noise. This tank's in a bedroom, so I need to get this problem fixed (even if that means buying a new filter, although I hope it doesn't come down to that). Any suggestions as to what could be wrong, and how to correct it?
