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5.1.5
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 these will cause the inverter surface paint to peel off.
• The display, etc. of the operation panel (FR-DU08) and parameter unit (FR-PU07) are vulnerable to detergent and alcohol.
Therefore, avoid using them for cleaning.
5.1.6
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
Main circuit fuse
*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 inverter rating
NOTE
• For parts replacement, contact the nearest Mitsubishi Electric FA center.
Inverter parts life display
The inverter diagnoses the control circuit capacitor and the cooling fan by itself, and estimates their lives.
The self-diagnostic warning is output when the life span of each part is near its end. It gives an indication of replacement time.
Guideline for life judgment using the life warning output
Part
Control circuit capacitor
Cooling fan
NOTE
• Refer to the Instruction Manual (Detailed) to perform the life check of the inverter parts.
Estimated lifespan
10 years
*2
10 years
*2
10 years
—
10 years
Judgment level
Estimated remaining life 10%
Not more than the specified speed
*1
Replace (as required)
Replace (as required)
Replace the board (as required).
As required
Replace (as required)
5. PRECAUTIONS FOR MAINTENANCE AND INSPECTION
Description
107
5.1 Inspection item
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