![background image](http://html.mh-extra.com/html/abb/ama-series/ama-series_manual_3508106.webp)
Manual for Induction Motors and Generators
Trouble Shooting -
91
3BFP 000 050 R0101 REV E
8.1.1 Mechanical performance
Trouble shooting
Mechanical performance
Vi
br
a
ti
o
n
Noi
s
e
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
z
z
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
z
z
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