1. Cause: Overload. Elimination method: it can be eliminated by reducing the load
2. Cause: The oil return valve is not closed. Troubleshooting: tighten the oil return valve to eliminate it
3. Cause: The check valve of the manual pump is stuck and the return fails. Troubleshooting: unscrew the oil pump valve port bolts, overhaul, clean, and replace the clean hydraulic oil
4. Cause: The manual pump and gear pump have serious oil leakage. Troubleshooting: replace the oil pump sealing ring
5. Cause: The gear pump is damaged and the oil pumped out has no pressure. Troubleshooting: replace the gear pump
6. Cause: Insufficient hydraulic oil. Troubleshooting: add enough hydraulic oil to eliminate it
7. Cause: Open circuit. Troubleshooting: check the button contactor and fuse, etc
8. Cause: The filter is blocked. Troubleshooting: replace or clean it
9. Cause: The action of support valve or electromagnetic directional valve fails, and there are two cases:
A. The input voltage of solenoid coil is less than 220V.
B. The solenoid coil is burnt out and the valve element is stuck. Troubleshooting: repair or replace it.
Nanjing Aplus Machinery Equipment Co. , Ltd. wishes you Qingming Festival Ankang ！Our product include vertical platform wheelchair lift,wheelchair elevator for disabled,hydraulic lift for the disabled people and so on,if you have needs,please contact us!
