If you are not spilling large quantities of liquid on the processor, there shouldn't be any significant problems.
I've used CPE and CPP processors, and some liquid does get spilled when pouring them in the lift (on the back sloped side) - but it's usually just a few drops - which can be wiped off with a rag, if you want to be careful.
Like I said, as long as you don't spill much, I see no reason to worry.
Just try to keep liquid away from the buttons (knobs) on the control panel (where you set the temperature and rotation speed) - if you pour (a lot of) liquid over THAT, I can see that some of it might run onto electronic parts...
Denis