I have a delta printer with a build plate diameter 290.
When I try to load Kap_Retibo_orig.stl, slic3s says it's too big for the buildplate.
When I load Kap_Retibo.stl (I addad a circle around it) everything is going fine.
The auto-center function is not based on the maximum limits of the part. For something that's not symmetrical and so close to the build plate size it matters and you will need to turn off auto-center and align it manually. I think the setting is in one of the first couple of menus but don't have the software in front of me.