1. When crimping, place the fitiing in the center of the mold as much as possible, and do not press on the hexagonal nut.
2. Prevent tools and other foreign objects from entering the press head.
3. Every time after the work is completed, the eight mold bases must be opened to the maximum extent, so that the spring can be in an open state and the spring can be maintained, and the oil cylinder is also in a pressure relief state to extend the life of the oil seal.