I got an AC110 for christmas. 
Its freakin' noisy.
Honestly, I don't really know what the problem is. It starts up fine, and runs like I expected it to. However, it is getting air into the impeller somehow, and I don't know whats causing it. If I set it so it is on the lowest flow, I can see airbubbles appearing on the side of the U-tube thing (the inside, of course) and they then flow with the water but collect at the end of the top, where it turns 90 degrees down to the impeller. After a fairly large air bubble has formed, it begins getting into the impeller. If I set it so it is on the highest flow, the bubbles don't collect, but instead get sucked straight into the impeller instead. Either way, it makes noise, just the first way it takes a few minutes before it starts.
There aren't any bubbles in the water, so it can't be that the filter is sucking those in. So, I thought maybe the U-tube is defective, and isn't completely sealed. But wouldn't water be coming out where the air is getting in? I can see what is apparently the source of the bubbles, on the side of the tube. I'll post some pictures soon.
This is driving me nuts, the thing is basically useless until I fix it.
Also, there is a plastic piece which isn't listed in the parts list, and isn't shown in any diagrams. I think I know what it is for, but it doesn't fix the problem, instead it seems to make it worse. I'll post pictures of that as well.
thanks!
Its freakin' noisy.
Honestly, I don't really know what the problem is. It starts up fine, and runs like I expected it to. However, it is getting air into the impeller somehow, and I don't know whats causing it. If I set it so it is on the lowest flow, I can see airbubbles appearing on the side of the U-tube thing (the inside, of course) and they then flow with the water but collect at the end of the top, where it turns 90 degrees down to the impeller. After a fairly large air bubble has formed, it begins getting into the impeller. If I set it so it is on the highest flow, the bubbles don't collect, but instead get sucked straight into the impeller instead. Either way, it makes noise, just the first way it takes a few minutes before it starts.
There aren't any bubbles in the water, so it can't be that the filter is sucking those in. So, I thought maybe the U-tube is defective, and isn't completely sealed. But wouldn't water be coming out where the air is getting in? I can see what is apparently the source of the bubbles, on the side of the tube. I'll post some pictures soon.
This is driving me nuts, the thing is basically useless until I fix it.
Also, there is a plastic piece which isn't listed in the parts list, and isn't shown in any diagrams. I think I know what it is for, but it doesn't fix the problem, instead it seems to make it worse. I'll post pictures of that as well.
thanks!
