NEMO pump is normally used as decanter centrifuge feeding pump.
How to operate GN NEMO pump?
In actual operation, the decanter centrifuge back drive motor should be started firstly, wait 5 second till it reach normal speed, start the main drive motor and wait to normal operation, finally start the feed pump motor. When shut down, firstly stop the feeding pump motor, close the main pipe valve and open flushing pipe valve to flush the centrifuge. When flushing is finished, stop the main motor , then stop the back drive motor, finally switch off the main power supply.
When operate the NEMO pump, always remember that never run the NEMO pump dry, rotations in dry condition will damage the stator. The Netzsch screw pump is a progressing cavity pump which produce pressure that may cause the bursting of vessels or pipes, and open valves and vents before starting the pump, and check the rotation direction.
How to maintenance the Nemo pump?
- Clean the Nemo pump if need, the pump should be cleaned regularly if the feeding materials deposit. You can clean the pump through the cleaning ports, or manually by dismantling the pump.
- Lubrication of the Nemo pump every 5000 operating hours or 2 years whichever comes first.
- Shaft sealing through single mechanical seal
- When the stator is stock for a long period, it is suggested to remove it and stored in a cool dry place in air tight package to give protection against light and air. Otherwise the stator will increase the break away torque.
- When a stand by nemo pump is re-started, it might be seized due to compression, it should be running time to time.
If you have problem to operate decanter centrifuge feeding pump, pls contact with GN solids control engineer.