Which aspect is the most important for a mechanical press routine maintenance project? The answer is the operator. All press maintenance and problem finding begins with the operator, who often finds problems with the press very early and prevents significant and permanent damage to the press components. The operator was able to notice the strange sounds caused by the press; abnormal temperature rise, smoke, debris or metal particles in some parts; and leaking lines found problems. Every day, the operator should ask himself some questions and record the answers after the inspection to maintain a long-term maintenance record.