Board Thread:General Discussion/@comment-120.148.5.217-20130512052036/@comment-5627887-20130512204840

Are you playing single player or SMP? On a server they will work, so long as you put a chunk loader near them to keep them working. A quarry for example keeps the chunks it is in loaded but if you happen to be on a chunk boundary and the phased transport pipe is just over the boundary, it won't work. This goes for powering a quarry also. If you are on single player, no matter what you do, nothing will work when you log out because the game's "server" only exists while you're playing.