The User Manual of 580 Series General Frequency Converter

9.1.3 Replacement of vulnerable parts for frequency converter

The vulnerable parts for frequency converter mainly include the cooling fan and filter-used electrolytic capacitor, the service life of which is closely related with the operating environment and the maintenance conditions. The general life time is:

Component name	Life time
Fan	2~3 years
Electrolytic capacitor	4~5 years

Note: The standard replacement time is the time when used in the following conditions, and the user can determine the replacement age based on the running time.

● Environment temperature: the average annual temperature is around 30℃

● Load rate: below 80%

● Operation rate: below 20 hours/day

1) Cooling fan

Possible reasons for damage: bearing wear and leaf aging.

Judgment standard: whether the fan blade and others have any cracks, and whether there is any abnormal vibration sound when it starts.

2) Filter electrolytic capacitor

Possible reasons for damage: poor quality input power, high environment temperature, frequent load jumping and aging electrolyte.

Judgment standard: whether the liquid leaks, whether the safety valve protrudes, the measurement of electrostatic capacitance and insulation resistance.