help with jebo quadraplex 182

Hello everyone, I recently aquired a jebo quadraplex 182 skimmer, and I was wandering how to get the darn thing to work. It came with a 500gph pump.
I have the water level where it specifies on the box, but the collection cup quickly fills with water and overflows back in the sump. I have heard that you need to "dial in" to the correct setting or something, is this true? and how would i go about doing this? Any feedback would be greatly appreciated.
THANKS

 

In all honesty, I bought one and played with it for about a month. I had the same results as you. I left the water level a little low, so it did not overflow into my tank (was using it in hang on mode in the tank) after about 2 weeks of seasoning I was able to raise the level a little to get some production. But since I did not have a sump, or top off system, it was constant adjustment to balance the water level. I finally bought a SeaClone 150 and am using the pump that came with the Jebo to feed my fuge design.

Mike