Maintenance and Inspection
8-3
Periodic Maintenance of Parts
The Inverter consists of many parts, and these parts must be operating properly in order to ensure full func-
tioning of the Inverter.
Among the electronic components, there are some that require maintenance depending on their usage condi-
tions. In order to keep the Inverter operating normally over a long period of time, it is necessary to perform
period inspections and replace parts according to their service life.
Periodic inspection standards vary depending the Inverter's installation environment and usage conditions.
The Inverter's maintenance periods are noted below. Keep them as reference.
Note The standard replacement period is based on the following usage conditions:
Ambient temperature:Yearly average of 30°C
Load factor: 80% max.
Operating rate: 12 hours max. per day
Fig 8.2 Part Replacement Guidelines
Part Standard Replacement Period Replacement Method
Cooling fan 2 to 3 years Replace with new part.
Smoothing capacitor 5 years
Replace with new part. (Determine need by
inspection.)
Soft charge resistor bypass con-
tactor
– Determine need by inspection.
Fuses 10 years Replace with new part.
Aluminum capacitors on PCBs 5 years
Replace with new board. (Determine need by
inspection.)
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