Best of luck. Checking out the impeller, kinks, etc as someone else suggested. If it was working before you cleaned, and it won't after put back together, it does sound like something just didn't get back correctly.
I have 3 rena filters, 2 - 4 on different size tanks. One time I cleaned the xp3 out and the motor made a racket. Said a few choice words, pulled it back out, took off the hoses, opened the canister right there and turned the motor upside down, pulled out the impeller... checked the hole, put it back and when I turned it back on, it was just as quiet as always.
Maybe this would be a good experiment for all you other Rena xp owners: take the impeller out, put it back together and see if it makes a noise.
I have 3 rena filters, 2 - 4 on different size tanks. One time I cleaned the xp3 out and the motor made a racket. Said a few choice words, pulled it back out, took off the hoses, opened the canister right there and turned the motor upside down, pulled out the impeller... checked the hole, put it back and when I turned it back on, it was just as quiet as always.
Maybe this would be a good experiment for all you other Rena xp owners: take the impeller out, put it back together and see if it makes a noise.