7-3
Table 7.1 List of Periodic Inspections (Continued)
Check part Check item How to inspect Evaluation criteria
Control circuit
Printed
circuit board
1) Check for loose screws and
connectors.
2) Check for odor and discoloration.
3) Check for cracks, breakage,
deformation and remarkable rust.
4) Check the capacitors for
electrolyte leaks and
deformation.
1) Retighten.
2) Smelling and
visual inspection
3), 4)
Visual inspection
1), 2), 3), 4)
No abnormalities
Cooling fan
1) Check for abnormal noise and
excessive vibration.
2) Check for loose bolts.
3) Check for discoloration caused by
overheat.
1) Hearing and
visual inspection,
or turn manually
(be sure to turn
the power OFF).
2) Retighten.
3) Visual inspection
1) Smooth rotation
2), 3)
No abnormalities
Cooling system
Ventilation
path
Check the heat sink, intake and
exhaust ports for clogging and
foreign materials.
Visual inspection No abnormalities
If the inverter is stained, wipe it off with a chemically neutral cloth to remove dust and use a vacuum
cleaner.
7.3 List of Periodical Replacement Parts
Each part of the product has its own service life that will vary according to the environmental and
operating conditions. It is recommended that the following parts be replaced as specified below.
When the replacement is necessary, consult your Fuji Electric representative.
Table 7.2 Replacement Parts
Part name Standard replacement intervals
DC link bus capacitor 10 years
Electrolytic capacitors on the printed circuit boards 10 years
Cooling fan 10 years
(Note) These replacement intervals are based on the estimated service life of the inverter at an ambient
temperature of 40qC (104qF) under 80% of full load. In environments with an ambient temperature
above 40qC (104qF) or a large amount of dust or dirt, the replacement intervals may need to be
reduced.
Standard replacement intervals mentioned above is only a guide for replacement, not a guaranteed
service life.
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