Inspection
Maintenance and inspection
8 - 6
8.1.6 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.
8.1.7
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 re-
placed periodically. Use the life check function as a guidance of parts replacement.
Replacement years for when the yearly average ambient temperature is 40°C (without
corrosive gas, flammable gas, oil mist, dust and dirt etc.)
Output current: 80% of the inverter rated current
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 ambient temperature. When unusual
noise and/or vibration is noticed during inspection, the cooling fan must be replaced immedi-
ately.
b
CAUTION:
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.
Part Name
Standard Replacement Interval
Description
Cooling fan
10 years
Replace (as required)
Main circuit smoothing capacitor
10 years
Replace (as required)
On-board smoothing capacitor
10 years
Replace the board (as required)
Relays
—
As required
Tab. 8-4:
Wearing parts
NOTE
For parts replacement, consult the nearest Mitsubishi FA Centre.
NOTE
The FR-D720S-008SC to 042SC and the FR-D740-022SC or less are not provided with a
cooling fan.
Summary of Contents for FR-D720S SC EC
Page 2: ......
Page 4: ......
Page 24: ...Description of the case Product checking and part identification 1 4 ...
Page 108: ...Operation panel Operation 4 20 ...
Page 436: ...Setting for the parameter unit and operation panel Parameter 6 286 ...
Page 484: ...Measurements on the main circuit Maintenance and inspection 8 14 ...
Page 504: ...Specification change Appendix A 20 ...
Page 505: ......
Page 506: ......
Page 510: ...Index Appendix A 24 ...
Page 511: ......