Quote:
Originally Posted by slief
It’s very odd that it’s silent when you don’t have the airline connected. How old is this skimmer? How deep is the water level in the sump? Only time I have encountered issues regarding vibrations has been when the screws that hold the motor base plate into the body are too loose or too tight such that the intake nozzle doesn’t align well through the hole in the body or if the bubble plate assembly ins’t centered and is instead off center and touching the body or if the bubble plate is loose and the upper plate is vibrating. That wouldn’t however account for your observation where it is silent without the airline connected though the vibrating bubble plate could be impacted by the addition of air. Do you have the ozone port on the pump capped off so it’s not pulling water in from the ozone port or have the red ozone tube connected and above water? When was the last time you cleaned the foam filter in the silencer?
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The skimmer is about 6 weeks old. It is silent with no air. It is in 8 1/2 inches of water. I actually have tried loosening and tightening the screws. I took it apart earlier today. I do not have the ozone port capped off I looked at the foam silencer and it looks good.