FujiFilm Frenic-Mini Instruction Manual page 142

(2) Electrolytic capacitor on the printed circuit board
The inverter keeps an accumulative total of the number of hours that power has been applied to
the control circuit and displays it on the LED monitor. Use this to determine when the capacitor
should be replaced. The display is in units of 1000 hours.
(3) Cooling fan
The inverter accumulates hours for which the cooling fan has run. The display is in units of 1000
hours.
The accumulated time should be used just a guide since the actual service life will be significantly
affected by the temperature and operation environment.
7-5