Ray,
I tried the macerator on our Liberty a couple of days ago. I just took a section of old garden hose, connected it to the macerator outlet, and stuck the other end into the sewer opening on the lot. I wasn't sure if mine had ever been used.
Everything worked fine. It took a minute or two for the pump to prime itself, but that was not a problem. The only complaint, and it's of no real importance, is that the macerator switch is momentary, so I had to keep my finger on it for the duration of the "dump".
Sure seemed like a neat setup.
Ya know, polishing the brass cap on the macerator outlet can be work, though...