Vibration of the pump and excessive noise.
Possible Reasons:
1.Damage of the bearing.
2.Imbalance of impeller.
3.Gas leak or jam at inlet pipe.
4.Uneven flow rate.
Solutions:
1.Replace the bearing.
2.Replace the impeller.
3.Eliminate the leak and clean the jammed area.
If you still have not solved the problem,please email its details to xinda-1 163.com.We would like to offer you the solutions according to your special condition.