Inspection item
INSPECTION AND MAINTENANCE273
6.1.5 Replacement parts
 Inverter is composed of many electronic components such as semiconductor components.
 Due to the composition or physical characteristics, the following components will age within a certain period of time,
thus reducing the inverter performance and even causing faults. Therefore, it is necessary to replace them on a
regular basis.
 Use lifetime detection function as a guidance of parts replacement.
For the axle of a fan, the standard lifetime is about 10 – 35 thousand hours. If fan
operates 24 hours per day, should be replaced every 2 years.
Capacitor is an electrolytic capacitor that deteriorates with time. The deterioration
level depends on ambient conditions. Generally, it should be replaced every 5
years.
If bad contact occurs, please replace it immediately.
Note: 1. Please send the inverters to the factory for replacement.
2. For the replacement of cooling fan, please refer to section 3.10.