In the process of using the die casting machine, it will inevitably encounter such failures.And the no total pressure is one of the fault for the cold chamber die casting machine .
J118A 80Ton cold chamber aluminum die casting machine
When there is no total pressure, the following checks should be followed:
Check and analysis :After the oil pump is started, press the pressure button to first check whether the pressure and flow indications have indications to determine whether the proportional pressure valve solenoid has current or not, whether is the electrical is failed or hydraulic is failed.
If there is current output,you should check :
1) Whether the oil pump is reversed (The person faces the direction of the oil pump shaft ,Clockwise rotation is forward rotation)
2) Check the relief valve to see if it is not operating properly or is stuck
3) Check if the shutoff valve is closed
4) Whether the throttle valve of the proportional relief valve is loosed or missed
2. If there is no current output,you should check :
1) Whether the rectifier plate is normal, and whether the pressure proportional amplification board is improperly adjusted or damaged
2) To check whether the computer is working properly, pressing the pressure button to see whether the corresponding point on the computer has input or not , and whether the total pressure point has output or not. If there is no input ,check if the pressing button connect to the computer is working properly. If there is input but computer has no output,it should be the computer malfunction or the back door is not closed etc.
3) Check if the output of the electric proportional plate to the oil valve line is normal.Is the electric proportional coil normal.
4) Check if the pressure dial is normal
