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6
PRECAUTIONS FOR MAINTENANCE AND INSPECTION
Inspection items
6.1.6 Cleaning
Always run the drive unit in a clean status.
When cleaning the drive unit, gently wipe dirty areas with a soft cloth immersed in neutral detergent or ethanol.
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.
∗1 Estimated lifespan 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 drive unit rated current
NOTE
Do not use solvent, such as acetone, benzene, toluene and alcohol, as these will cause the drive unit surface paint to peel off.
The display, etc. of the operation panel and parameter unit (FR-PU07) are vulnerable to detergent and alcohol. Therefore,
avoid using them for cleaning.
Part Name Estimated lifespan ∗1 Description
Cooling fan 10 years Replace (as required)
Main circuit smoothing
capacitor
10 years ∗2 Replace (as required)
On-board smoothing
capacitor
10 years ∗2 Replace the board (as required)
Relays — as required
NOTE
For parts replacement, contact the nearest Mitsubishi FA Center.
