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Installation, Operating and Maintenance Instruction
MPB 100-english
Article No 771074115
Cause
Contradiction between balancing of rotor and coupling (half
key - full key)
Polyphase motor running single phase
Excessive end play
Fan rubbing fan cover
Fan striking insulation
Airgap not uniform
Rotor unbalance
Bent or sprung shaft
Insufficient grease
Deterioration of grease or lubricant contaminated
Excess lubricant
Overloaded bearing
Broken ball or rough races
page 104
Model MPB, MPV
What to do
Rebalance motor.
Check for open circuit.
Adjust bearing or add shim.
Remove interference.
Clear fan.
Check and correct bracket fits or bearing.
Rebalance.
Straighten or replace shaft.
Maintain proper quality of grease in bearing.
Remove old grease, wash bearings thoroughly in kerosene and
replace with new grease.
Reduce quantity of grease, bearing should not be more than
1/2 filled.
Check alignment, side and end thrust.
Replace bearing, first clean housing thoroughly.
Revision 01
Issue 12/2006
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