Millipore NovAseptic GMP Series

Questions and Answers

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Rebecca ThompsonAug 15, 2025
How to troubleshoot a Millipore Mixer when the motor/mixing head does not rotate?
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  Elizabeth SpearsAug 16, 2025
  If the motor or mixing head of your Millipore mixer isn't rotating, first check the power supply to ensure it's properly connected. If that's not the issue, the overload protection might have tripped; in this case, check the setting amp value and the ambient temperature. Also, a heavy load of particles stuck to the magnets can prevent rotation, so clean the unit thoroughly.
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scottjonesAug 18, 2025
What to do if the outer drive head scratches the tank plate on my Millipore NovAseptic GMP Mixer?
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  Nicole ContrerasAug 19, 2025
  If the outer drive head of your Millipore mixer is scratching the tank plate, several factors could be at play. The shaft or hole-shaft in the gearbox might be bent, in which case you should contact Millipore service. Ensure the drive unit is correctly installed. Particles stuck to the magnets can also cause scratching, so remove them. Review the tank plate welding instructions and verify tolerances if deformation occurred during welding. Lastly, check if the outer drive head is loose; if so, position it onto its lower end against the shaft and tighten it.
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Derrick SimsAug 21, 2025
Why is the mixing head scratching against the tank plate on my Millipore Mixer?
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  popejenniferAug 21, 2025
  If the mixing head of your Millipore mixer is scratching against the tank plate, it could be due to several reasons. The male bearing might be worn out and needs replacement. The female bearing holder could be damaged, requiring repair of the mixing head. A loose male bearing can also cause this issue; remove it, inspect for damage, and reinstall if undamaged, checking the rotation direction. Particles stuck to the magnets can also cause scratching, so remove them. Finally, deformation after welding can be a cause; review the welding instructions and verify tolerances.
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Kathryn WeeksAug 25, 2025
What causes magnetic disconnection (decoupling) in a Millipore Mixer?
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  James CarlsonAug 25, 2025
  If your Millipore mixer experiences magnetic disconnection of the mixing head, also known as decoupling, it could be due to several reasons. Review the guidelines under “Operation/Starting the Mixer” to ensure correct addition of substances and avoid dry running. Unexpected changes in viscosity or density can cause this; consult your Millipore representative. Ensure the rotational direction of the mixing head is correct by inspecting and reinstalling the male bearing. Increasing the ramp time can address short acceleration/retardation times. Lastly, remove any particles stuck to the magnets.
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Leslie Bell IVAug 27, 2025
Why does my Millipore NovAseptic GMP Mixer show a high amp value?
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  Carl RossAug 27, 2025
  If your Millipore mixer shows a high amp value, it could be due to a high ambient temperature; try chilling the environment. Alternatively, the motor may be mechanically overloaded; check all transmissions.
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Rachel MillerAug 30, 2025
Why is the mixing head running eccentrically on my Millipore Mixer?
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  dunnbrendaAug 30, 2025
  If the mixing head on your Millipore mixer is running eccentrically, it could be because the male bearing is not properly in place. Remove the male bearing, inspect it and the tank plate for damage. If undamaged, reinstall the bearing and check the rotation direction of the mixing head. Also, worn out bearings can cause this issue, so replace the male bearing and/or repair the mixing head.
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Tammy RodriguezSep 2, 2025
What causes an abnormal noise in my Millipore Mixer?
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  michael48Sep 2, 2025
  If your Millipore mixer is making an abnormal or rumbling noise, it might be due to a deep vortex; reduce the speed and ensure the mixing head is fully covered with liquid. Cavitation could also be the cause; investigate the pressure, temperature, and speed. Another potential cause is dry running; review the guidelines under “Operation /Starting the Mixer”.
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simpsonjeffreySep 5, 2025
Why is my Millipore Mixer experiencing a loss of running speed?
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  Alisha FarrellSep 5, 2025
  If your Millipore mixer is losing running speed, check the power supply to ensure correct incoming power. Also, check the fuses to ensure no phases are missing.
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tannermartinSep 9, 2025
What to do if the speed counter shows an incorrect number of signals on my Millipore Mixer?
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  Brian BrownSep 9, 2025
  If the speed counter on your Millipore mixer shows an incorrect number of signals, ensure that the speed sensor unit is completely aligned and in contact with the drive unit flange without any gap. Refer to speed counter user guide 00101788PU for detailed instructions.
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Kevin PruittSep 12, 2025
What to do if the speed counter shows no signal on my Millipore NovAseptic GMP Mixer?
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  Michelle VazquezSep 12, 2025
  If the speed counter on your Millipore mixer shows no signal, it could be due to corroded socket pins or a worn cable. In either case, replace the speed counter.