Mechanical faults
Fault table, mechanical causes
Overview - Mechanical faults
Mechanical fault characteristics
↓ rubbing/grinding noise
↓ high temperature rise
↓ radial vibrations
↓ axial vibrations
Possible causes of fault Remedial measures
1)
x Rotating parts rubbing/grinding Determine cause and adjust parts
x Reduced air supply, fan possible running Check airways, clean motor
in the incorrect direction of rotation
x Rotor not balanced Decouple rotor and rebalance
x Rotor out of true, shaft bent Consult Siemens
x x Poor alignment Align motor unit, check coupling
2)
x Coupled motor not balanced Rebalance motor coupled up
x Shocks from coupled motor Check motor coupled up
x x Imbalance originating from gearing Adjust/repair gearing
x x Resonance of the overall system comprising After consultation, reinforce foundation
motor and foundation
x x Changes in foundation Determine cause of changes and
eliminate; realign motor
(1) Apart from elimination the cause of the fault (as described under ”Remedial measures”), you must also rectify any damage
the motor may have suffered.
(2) Take any possible changes due to a rise in temperature into account.
19
To Next Page
Loading...
Need help?
General