Mitsubishi Electronics FR-F700-NA ユーザーズマニュアル

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 fault of the inverter. For preventive maintenance, the parts must be replaced periodically.
Use the life check function as a guidance of parts replacement.

*1

Replacement years for when the yearly average surrounding air temperature is 40°C (104°F)
(without corrosive gas, flammable gas, oil mist, dust and dirt etc)

*2

Output current : 80% of the inverter rated current

The replacement interval of the cooling fan used for cooling the parts generating heat such as the main circuit
semiconductor is greatly affected by the surrounding air temperature. When unusual noise and/or vibration is noticed
during inspection, the cooling fan must be replaced immediately.

Cooling fan

10 years

Replace (as required)

Main circuit smoothing capacitor

10 years 

*2

Replace (as required)

On-board smoothing capacitor

10 years

Replace the board (as required)

Relays

−

as required

Fuse (FR-F740-04320 or more)

10 years

Replace the fuse (as required)

For parts replacement, consult the nearest Mitsubishi FA Center.

• Removal (FR-F720-00105 to 04750, FR-F740-00083 to 03610)
1) Push the hooks from above and remove the fan cover.

2)Disconnect the fan connectors.
3)Remove the fan.

* The number of cooling fans differs according to the inverter capacity. 

Fan cover

Fan cover

Fan cover

Fan

Fan

Fan

Fan connection 
connector

Fan connection 
connector

Fan connection 
connector

*

*