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GE Pegasus MHV GEEP-427-I Instuctions page 33

Horizontal induction motor totally enclosed water-to-air cooled sleeve bearing
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Trouble
Overheating (cont'd)
Bearings
Noisy
or
Vibrating
(antifriction type).
Low insulation resistance
or insulation failure.
GE Energy Motors GEEP-427-I
GEEP-427-I Pegasus, Horizontal Induction Motor
TROUBLE - SHOOTING CHART
Possible Cause
Insufficient oil
Contamination in oil or improper
grade of oil
Oil rings rotating slowly or not
rotating at all (if oil rings are
used).
Rings bent or otherwise damaged
in reassembling.
Oil seals bound up or damaged.
Defective bearings or rough
journal.
Wrong-grade of grease
Insufficient grease
Too much grease
Defective or damaged bearing
Foreign material in grease.
Moisture
Dirt
Conducting
particles
penetrated insulation.
TROUBLE - SHOOTING CHART
TEWAC, Sleeve Bearing
Add oil; if oil supply is very low,
drain, flush with clean oil, and refill.
Drain the oil. Flush with clean oil, and
relubricate using oil viscosity specified
on nameplate.
Oil ring has worn spot, replace with
new ring.
Replace oil rings.
Replace seals.
Replace bearings or resurface shaft.
Remove old grease and relubricate
using grease recommended by this
Instruction Book.
Remove relief plug and regrease
bearing. Replace plug after ½ hour
running.
Remove relief plugs and let motor run
until excess grease is purged. Then
reinstall plug.
Replace bearing.
Remove
contaminated grease from bearings.
Relubricate until only clean grease is
exiting relief plug.
Dry winding
Clean winding
have
Obtain expert help for repair.
Copyright 2009, The General Electric Company, USA 33
Action
relief
plug.
Purge

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