4-column hydraulic press machine trouble shooting
2021-11-23
| No. | Trouble | Cause | Trouble-shooting methods |
| 1 | Actions failure | 1.Wrong or loose electricwiring 2.Pressure of controloiltank not sufficient 3.Insufficient oil in oiltank. | 1.Check the wireconnecting 2.Regulate the pressure to 1.5Мра 3.Add oil to the required level |
| 2 | Slide creeping | 1.There is air in the hydraulic system or thesuction port of the oil pump sucks air 2.The accuracy is not fitor the vertical columnislack of lubricate oil. | 1.Check the suck pipe of the pump and make the slide move up and down several times then pressurized. 2.Readjust the accuracy and fill the lubricate oil to vertical columns. |
| 3 | When the slide moves down slowly, upper chamber of the main cylinder have pressure | Over high supportpressure | Adjust the counterbalance valve to make upper chamber of the main cylinder pressure free, the pressure should be less than 1MPa. |
| 4 | Machine stop but slide keep downing | 1. Cylinder leaking 2. Pressure valueleaking | 1. Change seal when cylinder leaking 2. Adjust value pressure |
| 5 | Pressure gauge pointer swing | 1. Air in pressuregauge 2. Pipe mechanicalshocking 3. Press gauge broke | 1. Release air in pressure gauge 2. Fixed pipe 3. Change one new press gauge |
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