Overcurrent in magnetic pump
Thread Content
The unit has a newly installed magnetic pump, and during operation, overcurrent occurs even when the outlet valve is opened only slightly. The noise and vibration levels are low; is this due to the low back pressure, the large pressure difference between the inlet and outlet, which results in a large current flow even with a slight opening of the valve? Please give me some suggestions, thank you
Reason, Solution: Excessive resistance in the outlet pipeline – Use the control valve or throttle orifice in the outlet pipeline for throttling. Foreign objects inside the pump – Disassemble and clean the pump, and replace the damaged parts with new ones. Wear of the sliding bearings – Check the bearing clearance. If necessary, replace it with new original parts. The viscosity of the liquid being pumped is too high; contact the manufacturer for evaluation. The density of the liquid being pumped is too high; contact the manufacturer for evaluation. The rolling bearings are damaged; replace the rolling bearings and clean the bearing housing. Verify that the appropriate lubricant is being used. Excessive rotation speed: check the frequency and voltage of the motor. Stress in the pipes: inspect and correct the inlet and outlet pipes to eliminate such stress. Insufficient motor power: normal operation is possible, but it is not sufficient for starting the valve. Mechanical friction: disassemble the machine and replace the damaged components with new spare parts