8-3
8
îš‹ Periodic Maintenance of Parts
In order to keep the Inverter operating normally over a long time, and to prevent down time due to an unex-
pected failure, it is necessary to perform periodic inspections and replace parts according to their service life.
The data indicated in the following table is to be used as a general guideline only. Periodic inspection stan-
dards vary depending on the Inverter’s installation environment conditions and usage. The Inverter’s sug-
gested maintenance periods are noted below.
Note: The standard replacement period is based on the following usage conditions:
Ambient temperature:Yearly average of 30°C/86°F
Load factor: 80%
Operating rate: 12 hours per day
Table 8.2 Part Replacement Guidelines
Part Standard Replacement Period Replacement Method
Cooling fan(s) 2 to 3 years (20,000 hours) Replace with new part.
DC bus capacitor 5 years
Replace with new part.
(Determine need by inspection.)
Soft charge contactor – Determine need by inspection.
DC bus fuse
Control power fuse
10 years Replace with new part.
PCB capacitors 5 years
Replace with new board.
(Determine need by inspection.)
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