Problem | Cause | Solution |
When the lift is rising, the motor stops running | 1. The circuit switch has been interrupted 2. The AC contactor circuit has been interrupted | 1. Check the circuit switch 2. Check the AC contactor |
Motor does not run but makes a humming noise | 1. Power phase loss | 1. Stop running, check whether the motor is damaged, and check whether the power line is out of phase. |
The motor runs but the lift does not go up | 1. The motor rotates incorrectly 2. Insufficient hydraulic oil 3. There is air in the pump station, which causes the hydraulic pressure to be unsmooth 4. Sliding valve blocked 5. There is residual material inside the solenoid valve 6. Damaged sealing ring 7. There are other substances left in the front of the oil filter 8. The manual screw of the electromagnetic pressure relief valve is loose 9. The pressure relief valve pair is manually opened 10. The limit switch works or is damaged | 1. Change the motor phase 2. Add hydraulic oil 3. Take out the one-way valve and press the up button (pay attention to the interface), until the oil flows out, the one-way valve can be reset. If it is invalid, the auxiliary operation can be repeated. 4. Inspect the seal and seal components and replace. 5. Clean the inside of the solenoid valve 6. Remove the bolts and cabinets connecting the pump station, pull the motor out 30mm and support it with strips. Press the up key and observe the assembly for leaks, replace the retaining ring if there is leakage. 7. Clean the oil filter 8. Tighten the screws |
The rate of rise is very slow | 1. The sealing ring is damaged | Check seals and seal components and replace |
The lift cannot be lowered | 1. The electromagnetic pressure relief valve is in a non-electric state 2. The electromagnetic oil drain valve is damaged 3. The internal button switch is not properly connected 4. Insufficient air pressure | 1. Check whether the lower button and solenoid oil drain valve circuit are closed 2. Check the solenoid oil drain valve and repair it 3. Check the switch button 4. Adjust the air pressure and open the mechanical lock |