A couple of weeks ago I disassembled the Waterco Multicyclone 50 for a good cleaning. I removed the clear bottom portion easily, but then had to undo the 15+ nuts and bolts that hold together the top grey sections. I marked the sides of the unit in 3 places to make sure I could reassemble it. The inside was fairly clean but a couple of the vortex cones were clogged with bradford pear fruit stems. A good blast of water from the hose was all it really needed. Possibly, you could merely unscrew the top union and spray a strong jet of water down into the unit and probably have similar results.
Reassembly was a bit tricky because the o-rings that make it water tight tend to slip out of their slots. Below is a picture of the unit for those who may not be willing to disassemble their own.
Here is a schematic of all the parts. You can find a description of the parts Here
