解释不通,谁来帮帮我? To generate hydraulic pressure without running the system, you will need to bypass the air solenoid valves within the hydraulic panel by supplying 5-6 bar (~80 psi) drive air directly to the hydraulic pumps and air-piloted hydraulic relief valves (both circuits). Apply 138 bar (2,000 psi) hydraulic pressure to both rolls / cylinders simultaneously and hold for 30 seconds. 查看更多6个回答 . 3人已关注