It's a mean old world and we all have to take some chances.
I took the chance that I would not have to clean the reactors as I don't put anything in them. My thinking is that the 1 1/2 or 2" pipe will be good far longer than the tubing feeding it! But then IF I do need to get into it, my plan is to lay it out on the saw and rip it apart. It only takes a coupling to put it back together. The whole unit will get a bit longer each time but for the last few years, I've never needed one open.
I do have to tilt mine to clear the air out of the canister on restarts. For whatever reason the incoming water won't push the air out past the filled reactor. So having a flat bottom, I tie it loosely at the top and just swing it up to let the air pass.