Maintenance 7 - 4Periodic Maintenance of PartsIn order to keep the Drive operating normally over a long period of time, and to prevent down time due to an unexpectedfailure, 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 standards varydepending on the Drive's installation environment conditions and usage. The Drive's suggested maintenance periods are notedbelow.Table 7.4 Part Replacement GuidelinesPart Standard Replacement Period Replacement MethodCooling fan(s) 2 to 3 years (20,000 hours) Replace with new part.DC bus capacitors 5 years Replace with new part.(Determine need by inspection.)Soft charge contactor - Determine need by inspection.DC bus fuseControl power fuse 10 years Replace with new part.PCB capacitors 5 years Replace with new board.(Determine need by inspection.)Note: The standard replacement period is based on the following usage conditions:Ambient temperature:Yearly average of 86°F/ 30°CLoad factor: 80% maximumOperating time: 12 hours maximum per day
