
74 SEBU8219-01
Maintenance Section
Maintenance Recommendations
Maintenance
Recommendations
i01179728
General Maintenance
Information
SMCS Code: 4450; 7000
Note: Read the warnings and read the instructions
that are contained in the Safety Section of this
manual. Thes
e warnings and instructions must be
understood before you perform any operation or any
maintenance procedures.
Rotating electric machines are complex structures
that are exposed to the following forms of stress:
•
mechanical
•
electrical
•
thermal
•
environmental
These stres
ses may be of varying magnitudes. The
electrical insulation systems are very susceptible to
damage that is caused by the stresses that are listed
above. Expo
sure to these stresses may shorten
the effective life of the electrical insulation system.
Therefore, the service life of an electric machine will
largely de
pend on the serviceability of the electrical
insulation systems. An inspection program and a
testing procedure are recommended. An inspection
program a
nd a testing procedure will ensure that the
equipment is maintained in satisfactory condition.
This will increase field reliability.
A regular maintenance and inspection program can
provide an evaluation of the present condition of
the equip
ment. A regular maintenance program
and a regular inspection program can also reveal
future problems. The frequency of this maintenance
program
will depend on the following factors:
•
application
•
environmental conditions
•
operato
r ’s experience
•
operator’s philosophy
A regular maintenance program is strongly
recommended. This program would involve the
followi
ng steps:
•
periodic disassembly
•
knowledgeable
visual examination of the
equipment
•
the applicati
on of electrical tests
Never perform a test over the rated potential. These
tests can dama
ge insulation that is contaminated
or insulation that is in marginal condition. For more
information, refer to “I.E.E.E. Standard 432-1992” or
consult a Cat
erpillar dealer.