Failure Phenomenon Of Four Column Hydraulic Press Die Cutting Machine

- Jan 20, 2020-

Failure phenomenon of four column hydraulic press die cutting machine:


1. The indicator light is off: the whole machine has no power


2. Transformer fuse burnout: replace fuse


3. The brake switch is not turned on: turn on the power brake switch


4. The indicator light is off to start the motor: the indicator bulb is burnt out, replace the indicator bulb


5. The light is on and the motor cannot be started


(1). Motor protection switch trip: Turn on the motor protection switch


(2). Defective or burned main control contactor: Replace the contactor


(3). Motor burned out: Replace the motor


6. Light is on Can start the motor but not work


(1). Set the die setting switch to the horizontal position to lock the oil path: Set the die setting switch to the straight direction


(2). Motor rotation error: Connect two phases of the motor to each other.


(3). The contact of the work switch is bad.


(4). Solenoid valve coil burned out: Replace the coil or the entire solenoid valve


(5). The solenoid valve spool is stuck: cleaning the spool


(6). The stroke adjustment handle is loose: reset the die


7. Can not be reset after work: the circuit board in the electrical box is burnt and replaced


8. Can work but cannot reset: the circuit board in the electrical box is burnt and replaced


9. Insufficient work pressure


(1). Cutting material layer is too thick: reduce material layer


(2). The die setting stroke is adjusted too low: to the proper position


(3). Filter screen is clogged: Clean or replace the filter


(4). Oil pump damaged: Replace oil pump


10. Oil leakage


(1). Oil cylinder oil seal aging: Replace oil seal


(2). High pressure oil pipe joint is loose: tighten the joint


11. Noise from motor oil pump


(1) Wear of rubber particles during oil pump rotation: Replace rubber particles


(2). Filter clogged: clean the filter


(3). Loss of hydraulic oil: add enough hydraulic oil


(4). Oil pump bearing is damaged: replace the bearing


(5). Aging of oil pump shaft end oil seal: replace oil seal


(6). Motor bearing is damaged: replace the bearing


12. The crash cannot rise or fall after the speed slows down or rises


(1). Cylinder seal aging: Replace the seal


(2). Worn solenoid valve core: Replace solenoid valve


(3). Reduced pressure oil viscosity: replace pressure oil


(4). Poor board contact: check wiring


(5). The main road cannot be switched: check the line


(6). The solenoid valve is stuck: clear the valve body