System check the relevant parameters of the hydraulic pump large hydraulic excavator control two main ways: ultimate load regulator with pressure shut-off function (ie CUT-OFF function) (GLR) and load sensing regulator (LS) mode. The role of CUT-OFF function is used digging machine medium price, when system pressure reaches the setting value, variable pump swash plate angle is reduced, the pump can only be maintained at the pressure required to maintain the "residual" flow state to avoid overflow relief valve overheating. To achieve this purpose, the system parameters to match the technical requirements so that the setting value is lower than the CUT-OFF valve set-value of the primary circuit pressure valve; otherwise, the primary pressure relief valve open will result in overheating. Excavators at the Norwegian position, the driver should be observed and whistle, after the Norwegian position to avoid mechanical side was cause accidents, slip off position after the rotation radius excavator to ensure that space without any obstacle, prohibited illegal operation. After work, used digging machine price lists, excavators should move away from low-lying areas or trough (groove) edge of the imported second-hand digging machine prices, parked on the ground, doors and windows closed and locked. The device driver must do routine maintenance, repair, maintenance, Liaoning used digging machine prices, good equipment in use daily records and found that the vehicle in question, can not be sick job, and report timely repairs. Nanjing second-hand digging machine prices | Kim Ho used excavators | Used Kobelco digging machine prices provided by the Shanghai Used Construction Machinery Co., Ltd. Jin Hao. Nanjing second-hand digging machine prices | Kim Ho used excavators | Used Kobelco digging machine price Shanghai Jin Hao Used Construction Machinery Co. (www.jinhaosh.cn) this year introduced a new upgrade, the above picture is for reference only, please call this page or Tel picture on to obtain the latest information, contact: Mr. Chairman.