Flojet macerator: is it reliable? Maintenance issues?

I bought one 10 years ago for use at a campground where I was going to host. The ranger told me over the phone the nearest dump location was 75' or so from my site and I could just use it. When I arrived I found the dump site was 205' from my site and I never had the nerve to try the pump. I could just see it quitting with 200' of poo in the hose. I have still never used it, but I take it with me every trip just in case.