GE Energy Motors GEEP-427-I Copyright 2009, The General Electric Company, USA
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GEEP-427-I Pegasus, Horizontal Induction Motor
TEWAC, Sleeve Bearing
Trouble Possible
Cause
Action
Noise or vibration
(cont’d)
Misalignment
Check parallel, angular and axial
alignment.
Air gap not uniform. (Machines
furnished without one bearing)
Center the rotor.
Noisy ball bearings
Check lubrication. Replace bearings if
noise is persistent and excessive.
Loose on foundation
Realign machine. Tighten hold-down
bolts.
Foreign material inside unit
Clean inside for unit.
Overheating
Overloaded
Measure loading with ammeter and
compare with full load current on
nameplate. Reduce load.
Electrical load unbalance
Check for voltage unbalance or single
phasing.
Restricted
ventilation
Clean filters, air passages and
windings. Check water cooling if
applicable.
Incorrect voltage and frequency.
Check nameplate values with power
supply. Also check voltage at terminals
with machine under full load.
Stator winding shorted. (line-to-
line)
Inspect winding for damage. Obtain
expert help for repair.
Stator winding ground.
(line-to-ground)
Inspect winding for damage. Obtain
expert help for repair.
Incorrect speed
Check speed, compare with nameplate.
Bearings overheating
(journal type)
Alignment
Check parallel, angular and axial
alignment. Correct as required.
Summary of Contents for Pegasus MHV GEEP-427-I
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