That image should put some concern out there about the use of plate chillers. There are a bazillion spots inside it that have very low flow with eddy currents. Because of that, they are difficult to completely clean. IMHO.
I've posted a similar cutaway image before:
I'm a firm believer in immersion & counter flow chillers.
Wow, if the therminator didn't have a good track record and i seen this picture before i bought it, I never would have. Like stated above, there are way to many places for trub to get stuck in and never removed.