Troubleshooting
During troubleshooting, follow the instructions in this manual. A correct installation is
crucial to proper operation.
Before repair or service of the GMP Mixer, personnel must study and understand the
user guide.
Before performing maintenance on the GMP Mixer, make sure that the vessel is:
• cooled down to below 25 °C (77 °F)
• emptied of liquid and hazardous gas
• free from traces of harmful products
It is the customer’s responsibility to check the safety of the GMP Mixer used in a new
application according to:
• External load
• Reaction forces and torque
• Corrosion, erosion, and fatigue
• Decomposing of unstable liquids
Problem
Possible Causes
Solutions
Motor/mixing head
does not rotate
No power
Inspect power supply
Overload protection tripped
Check the setting amp value and the ambi-
ent temperature
Heavy load of particles stuck to
the magnets
Clean the unit
High amp value
Ambient temperatre too high
Chill the environment
Motor mechanically overloaded
Check all transmissions
Mixing head
scratches against
tank plate
Male bearing worn out
Replace male bearing
Female bearing holder is dam-
aged
Repair mixing head
Loose male bearing
Remove male bearing. Inspect male bearing
and tank plate for damage. If it is undam-
aged, reinstall the bearing and check rota-
tion direction of the mixing head.
Particles stuck to the magnets
Remove particles.
Deformation after welding
Review instructions for welding the tank
plate and verify tolerances using appropri-
ate gauges.
Outer drive head
scratches the tank
plate
Bent shaft
Contact Technical service
Bent hole-shaft in gearbox
Contact Technical service
Drive unit not properly in place
Install drive unit correctly
Particles stuck to the magnets
Remove particles.
Deformation of tank plate during
welding
Review instructions for welding the tank
plate and verify tolerances using appropri-
ate gauges.
Loose outer drive head
Position the outer drive head onto its lower
end position against the shaft and tighten.
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Summary of Contents for NovAseptic GMP
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