Are there any precautions for the hydraulic system of the hydraulic press?

Hydraulic hydraulic system, it can be said that this is an important part, it can not be scorned and sloppy. In the course of its use, it has some precautions, so it can be known that the answer to question one is yes. Among these precautions, one of the more important points is to avoid the inclusion of foreign matter or foreign matter in the hydraulic oil, to have clean hydraulic oil, and to have good heat dissipation.