Out with the old and in with the new is a common phrase and common practice for most people in today's world. For example if your toaster stops working, what are you going to do? Chances are you will probably just throw it away and buy a new toaster... out with the old, in with the new. However, if your car is having a problem, more than likely you aren't going to just throw it away and get a new one. It's too expensive for that. In most cases, you find out what the problem is and have it fixed.
I would like to teach you how you can treat your conveyor system more like your car and less like your toaster.