Failure Phenomenon Of Precision Hydraulic Cutting Machine

- Jun 04, 2020-

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


2. Transformer fuse burnt out: replace the fuse


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


4. The indicator light does not light can start the motor: the indicator bulb is burned out and the indicator bulb is replaced


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


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


(2) The main control contactor is bad or burnt out: replace the contactor


(3) Motor burned out: Replace the motor


6. The indicator light is on. The motor can be started but not working.


(1) Set the knife mold setting switch to the horizontal position to lock the oil path: Set the knife mold high setting switch to a straight direction


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


(3) The terminal of the work switch is in bad contact:


(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) Loose stroke adjustment handle: reset the die


7. Can't work and can be reset: the circuit board in the electrical box is burnt and replaced.


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


9. Insufficient working pressure


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


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


(3) Clogged filter: clean or replace the filter


(4) Damaged oil pump: replace the oil pump


10. Oil leakage


(1) Aging of the oil seal of the oil cylinder: replace the oil seal


(2) Loose high-pressure oil pipe joint: tighten the joint


11. Noise from motor oil pump


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


(2) Filter screen is clogged: clean the filter screen


(3) Hydraulic oil loss: add enough hydraulic oil


(4) Oil pump bearing is damaged: Replace the bearing


(5) Oil pump shaft end oil seal aging: replace oil seal


(6) Motor bearing is damaged: Replace the bearing


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


(1) Aging of oil cylinder sealing ring: replace the sealing ring


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


(3) Reduced viscosity of pressure oil: Replace pressure oil


(4) Poor board contact: check wiring


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


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