256
Inspection item
(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 ambient temperature. When unusual noise and/or vibration is noticed
during inspection, the cooling fan must be replaced immediately.
CAUTION
For parts replacement, consult the nearest Mitsubishi FA Center.
Inverter Type
Fan Type
Units
F720
2.2K to 5.5K MMF-06F24ES-RP1 BKO-CA1638H01 1
7.5K to 15K MMF-08D24ES-RP1 BKO-CA1639H01 2
18.5K, 22K MMF-12D24DS-RP1 BKO-CA1619H01 1
30K
MMF-06F24ES-RP1 BKO-CA1638H01 1
MMF-12D24DS-RP1 BKO-CA1619H01 1
37K to 55K MMF-12D24DS-RP1 BKO-CA1619H01 2
75K to 110K MMF-12D24DS-RP1 BKO-CA1619H01 3
F740
3.7K, 5.5K MMF-06F24ES-RP1 BKO-CA1638H01 1
7.5K, 18.5K MMF-08D24ES-RP1 BKO-CA1639H01 2
22K, 30K MMF-12D24DS-RP1 BKO-CA1619H01 1
37K MMF-09D24TS-RP1 BKO-CA1640H01 2
45K to 75K
MMF-12D24DS-RP1 BKO-CA1619H01
2
90K to 160K 3
185K, 220K
9LB1424H5H03
3
250K to 315K 4
355K, 400K 5
450K to 560K 9LB1424S5H04 6
The FR-F720-0.75K, 1.5K, FR-F740-0.75K to 2.2K are not provided with a cooling fan.
• Removal (FR-F720-2.2K to 110K, FR-F740-3.7K to 160K)
1) Push the hooks from above and remove the fan cover.
2)Disconnect the fan connectors.
3)Remove the fan.
* The number of cooling fans differs according to the inverter capacity. (Refer to page 256)
FR-F720-2.2K to 5.5K
FR-F740-3.7K, 5.5K
FR-F720-7.5K to 30K
FR-F740-7.5K to 30K
FR-F720-37K or more
FR-F740-37K to 160K
Fan cover
Fan cover
Fan cover
Fan
Fan
Fan
Fan connection
connector
Fan connection
connector
Fan connection
connector
FR-F720-2.2K to 5.5K
FR-F740-3.7K, 5.5K
FR-F720-7.5K to 30K
FR-F740-7.5K to 30K
FR-F720-37K or more
FR-F740-37K to 160K
*
*