Cleaning; Replacement Of Parts - Mitsubishi Electric FR-E700 Instruction Manual

Inspection
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.
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.
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 character-
istics, 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
Tab. 8-4: Wearing parts
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
NOTE For parts replacement, consult the nearest Mitsubishi FA Centre.
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.
Inverter Type
FR-E720S-
FR-E740-
Tab. 8-5: Correspondence between inverters and cooling fans
NOTE The FR-E720S-030 or less and the FR-E740-026 or less are not provided with a cooling fan.
8 - 6
Standard Replacement Interval
10 years
10 years
10 years
—
Fan Type
50 to 110 MMF-06F24ES-RP1 BKO-CA1638H01
040 to 095 MMF-06F24ES-RP1 BKO-CA1638H01
120 and 170 MMF-06F24ES-RP1 BKO-CA1638H01
230 and 300 MMF-08F24ES-RP1 BKO-CA1639H01
Maintenance and inspection
Description
Replace (as required)
Replace (as required)
Replace the board (as required)
As required
Units
1
1
2
2