Maintenance and Inspection
7-3
7
Periodic Maintenance of Parts
In order to keep the Inverter operating normally over a long period of time, and to prevent down time due to an
unexpected 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% maximum
Operating rate: 12 hours maximum per day
Fig 7.3 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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