The Terpenator closed loop essential oil extraction system invented by Graywolf, was donated to public domain, insuring that it can never be patented and that the prices will stay in check.
As a result, the basic Terpenator design now has numerous manufacturers world-wide that copy or emulate it, though not builders are scrupulous, nor do all meet ANSI/ANSI design and build requirements. Because the industry is unregulated, that means caveat emptor.
This general guide is intended as a straw-man starting point, for a general instruction guide that can be used by all Terpenator design close loop system users, to select, assemble, test, and run their system.
I simply took a Mk IVB operating manual and reworded it, removing valve number reference and brand name hoopla, because it is about Terpenators in general, not a specific brand.
There will be some differences, as not all Terpenator style systems offered are bi-flow, nor do all offer dedicated column recovery, so if your system does not, skip those steps.
Many of the same issues apply to systems designed and built by others, but some are enough different that they will have their own unique operating criteria, so a separate thread dedicated to those systems may be called for.
Because the backup reference file is large, I will post it in multiple bits. I also encourage all operating Terpenator systems to take this opportunity to toss in their own thoughts and questions.