Troubleshooting of hydraulic cutting machine IV

- Feb 25, 2019-

Fault phenomenon:

The indicator light is on

Can start the motor

But can't work


Failure analysis:

1. The die setting switch hits the horizontal position to lock the oil circuit.

2. Motor steering error

3. The working switch is in poor contact with the wire head falling off

4. Solenoid valve coil burned

5. Solenoid valve spool stuck

6. Stroke adjustment handle loose


Method of exclusion:

1. Turn the knife mold high setting switch to the straight direction

2. Change the two phase pairs of the motor

3. Check the line to connect the line head

4. Replace the coil or the entire solenoid valve

5. Clean the spool

6. Reset the die