Chapter 8. Troubleshooting and Maintenance
8.5 Parts Replacement
The inverter consists of many electronic parts such as semiconductor devices. The
following parts may deteriorate with age because of their structures or physical
characteristics, leading to reduced performance or failure of the inverter. For
preventive maintenance, the parts must be changed periodically.
Part name
Change period
(year)
Description
DC link condenser 4 Exchange
Control smoothing condenser 4 Exchange
Relay - Determined after inspection