Fuji Electric FRENIC-AQUA series, User Manual

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10.3 List of Periodic Replacement Parts
10-3
Chap. 10
MAINTEN
A
N
C
E AND
IN
SPECTION
Table 10.1 List of Periodic Inspections (Continued)
Check part Check item How to inspect Evaluation criteria
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
shut down the power
beforehand).
2) Retighten.
3) Visual inspection
1) Smooth rotation
2), 3)
No
abnormalities
C
ool
in
g s
yst
em
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.
10.3 List of Periodic Replacement Parts
The inverter consists of many electronic parts including semiconductor devices. Table 10.2 lists
replacement parts that should be periodically replaced for preventive maintenance (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 representative.
Table 10.2 Replacement Parts
Standard replacement intervals (See Note below.)
Part name
0.75 to 90 kW 110 to 710 kW
DC link bus capacitor 5 years 10 years
Electrolytic capacitors on
printed circuit boards
5 years 10 years
Cooling fan 5 years 10 years
Fuse - 10 years
(Note) These replacement intervals are based on the inverter's service life estimated at an ambient
temperature of 30
°
C (IP55) or 40
°
C (IP21) at full load (100% of the inverter rated current). In
an environment with an ambient temperature above 30
°
C (IP55) or 40
°
C (IP21) or with a large
amount of dust or dirt, or in an environment where inverters are mounted closely side by side,
the replacement intervals may be shorter.
Standard replacement intervals mentioned above are only a guide for replacement, not a
guaranteed service life.