Manual for Induction Motors and Generators
Trouble Shooting - 91
3BFP 000 050 R0101 REV E
8.1.1 Mechanical performance
Trouble shooting
Mechanical performance
Vibration
Noise
z
z
Lubrication malfunction
Check lubricant quality and quantity and lubrication system function
z
z
Damaged bearing parts Check bearing condition and replace bearing parts
z
z
Faulty bearing assembly Open and readjust the bearing
zz
Faulty cooling fan(s)
Imbalanced or damaged fan(s) Check and repair cooling fan(s)
z
Malfunctioning cooling system
Inspect and repair cooling system
z
z
Machine misalignment Check machine alignment
z
z
Rotor or shaft imbalance
Rebalance rotor
z
z
Vibration coming from connected machinery
Check the balance of connected machinery and coupling type
z
z
Axial load coming from connected machinery
Check alignment and coupling function and type
z
z
Faulty or incorrectly assembled coupling
Check coupling function
z
Insufficient foundation strength Reinforce foundation as per ABB instructions
z
Winding fault Check windings
zz
Excessive network unbalance Check that network balance fulfils requirements
z
Foreign material, moisture or dirt inside the machine Check and clean machine interior, dry windings
Experienced
malfunction
Corrective action
Bearing malfunction
Possible cause
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