Production
Many industrial processes predate the engineering and production staff currently running them, based on the principle of this being how it’s always been done. Among other things, this way of thinking ignores the fact that equipment capability, performance requirements, regulatory compliance and the materials being processed are likely far different from those that the original process was designed around. A process running flawlessly based on 30 year old definitions, is probably slow, inefficient and wasteful by modern standards (the ones your competitors are applying).
New equipment (or newly purchased but refurbished equipment) won’t behave the same way your current production lines do. In some ways it will be better, in some ways worse. This is the time to evaluate your process capability, and get the most mileage out of the equipment, expertise and historic data you have. New equipment has a very short honeymoon period in manufacturing. Use it wisely to avoid surprises at unfortunate times.