Q: How to solve the abnormal sound of the oil pump in the die-casting machine?
A: The cause of the malfunction:
1. Power supply phase loss
2. Oil pump reverse rotation
3. Oil pump damage
4. The system pressure is too high
Handling method:
1. Check the three-phase power line
2. Swap any two power cables
3. Repair or replace the oil pump
4. Adjust the relief valve to ensure that the system pressure meets the regulations