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Inspection items
6.1.6
Cleaning
Always run the inverter in a clean status.
When cleaning the inverter, gently wipe dirty areas with a soft cloth immersed in neutral detergent or ethanol.
NOTE
Do not use solvent, such as acetone, benzene, toluene and alcohol, as they will cause the inverter surface paint to peel off.
The display, etc. of the operation panel and parameter unit (FR-PU04/FR-PU07) are vulnerable to detergent and alcohol.
Therefore, avoid using them for cleaning.
6.1.7
Replacement of parts
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.
Part Name
Cooling fan
Main circuit smoothing
capacitor
On-board smoothing
capacitor
Relays
∗1
Replacement years for when the yearly average surrounding air temperature is 40°C
(without corrosive gas, flammable gas, oil mist, dust and dirt etc.)
∗2
Output current: 80% of the inverter 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.
NOTE
For parts replacement, consult the nearest Mitsubishi FA Center.
Inverter Capacity
FR-E720-1.5K to 3.7K
FR-E740-1.5K to 3.7K
FR-E720S-0.75K to 2.2K
FR-E720-5.5K, 7.5K
FR-E740-5.5K, 7.5K
FR-E720-11K, 15K
FR-E740-11K, 15K
302
Standard Replacement
Interval ∗1
10 years
10 years ∗2
10 years
—
Fan Type
MMF-06F24ES-RP1 BKO-CA1638H01
MMF-06F24ES-RP1 BKO-CA1638H01
MMF-08D24ES-RP1 BKO-CA1639H01
Description
Replace (as required)
Replace (as required)
Replace the board (as required)
as required
Units
1
2
2
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