FujiFilm FVR-Micro - 7.3 Standard Lifetime of Inverter

Table 7.1 List of Periodic Inspections (Continued)
Check part Check item How to inspect Evaluation criteria
Maincircuit
Magnetic
contactor
and relay
1) Check for chatters during
operation.
2) Check for rough contacts.
1) Hearing
inspection
2) Visual inspection
1), 2)
No abnormalities
Control circuit
Printed
circuit
boards
1) Check for loose screws and
connectors.
2) Check for abnormal odor and
discoloration.
3) Check for cracks, breakage,
deformation and remarkable rust.
4) Check the capacitors for
electrolyte leaks and deformation.
1) Retighten.
2) Olfactory and
visual inspection
3), 4)
Visual inspection
1), 2), 3), 4)
No abnormalities
Cooling system
Cooling fan
1) Check for abnormal noise and
excessive vibration.
2) Check for loose bolts.
3) Check for discoloration caused by
overheat.
1) Auditory 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
Ventilation
path
Check the heat sink, intake and
exhaust ports for clogging and foreign
materials.
Visual inspection No abnormalities
Remove dust accumulating on the inverter with a vacuum cleaner. If the inverter is stained, wipe
it off with a chemically neutral cloth.
7.3 Standard Lifetime of Inverter
The inverter consists of many electronic parts including semiconductor devices. Table 7.2
lists lifetime of parts that should be periodically replaced inverter (Use the lifetime judgment
function as a guide). These parts are likely to deteriorate with age due to their constitution and
properties, leading to the decreased performance or failure of the inverter.
When the replacement is necessary, consult your Fuji Electric Co., Ltd. representative.
Table 7.2 Lifetime of Parts
Part name
Standard lifetime of parts
(See Note below.)
DC link bus capacitor
40,000Hr
Electrolytic capacitors on the printed circuit boards 40,000Hr
Cooling fan
40,000Hr
(Note) These lifetimes are based on the inverter's service life estimated under the following
conditions.
- Ambient temperature: 40 ° C
- Load factor: 80% of the rated current given in parentheses ( ) in Chapter 8 "Specifications
- Running 12 hours/day
In environments with an ambient temperature above 40°C or a large amount of dust or dirt, the
lifetimes may be shorter.
Standard lifetimes mentioned above are only a guide for replacement, not a guaranteed service
life.
7-3