Replacement Of Parts - Mitsubishi Electric FR-E700EX Instruction Manual

Inspection items
6.1.7

Replacement of parts

The drive unit 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 drive unit. For preventive maintenance, the parts must be replaced periodically.
Use the life check function as a guidance of parts replacement.
Part Name
Cooling fan
Main circuit smoothing capacitor
On-board smoothing capacitor
Relays

Estimated lifespan for when the yearly average surrounding air temperature is 40°C (without corrosive gas, flammable gas, oil mist, dust and dirt etc.)

Output current: 80% of the drive unit rated current
NOTE
 For parts replacement, consult the nearest Mitsubishi FA Center.
(1) Cooling fan
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.
292

Estimated lifespan
10 years
10 years 
10 years

—
Removal
1) Push the hooks from above and remove the fan
cover.
2) Disconnect the fan connectors.
3) Remove the fan.
Description
Replace (as required)
Replace (as required)
Replace the board (as required)
as required
Fan cover
Fan connector
Fan