Maintenance and Inspection8- 3 Periodic Maintenance of PartsThe Inverter is configured of many parts, and these parts must be operating properly in order to make full useof the Inverter functions.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 performperiod 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°CLoad factor: 80% max.Operating rate: 12 hours max. per day Procedure for Adjusting Constants after Replacement of Control BoardBefore replacing the control board, use the COPY function of the Digital Operator to copy the settings of theconstants of the control board from the Inverter to the Digital Operator.When using the copy function of the Digital Operator, check that the following settings are the same betweenthe Inverter and the Digital Operator.• Inverter product and type• Software number• Inverter capacity and voltage• Control methodRefer to Copying Constants of Chapter 6 on page 6-150.After replacing the board, use the following procedure to adjust the constants.Contact your Yaskawa representative if a control board with older version is used.Table 8.2 Part Replacement GuidelinesPart Standard Replacement Period Replacement MethodCooling fan 2 to 3 years Replace with new part.Smoothing capacitor 5 years Replace with new part. (Determine need byinspection.)Breaker relays - Determine need by inspection.Fuses 10 years Replace with new part.Aluminum capacitors on PCBs 5 years Replace with new board. (Determine need byinspection.)
