167
(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 surrounding air 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
A721
5.5K to 15K
MMF-08D24ES-RP4 BKO-CA1639H11
2
18.5K, 22K
MMF-12D24DS-CP2 BKO-CA1619H11
1
MMF-09D24TS-RP7 BKO-CA1640H11
1
30K
MMF-12D24DS-CP2 BKO-CA1619H11
2
37K to 55K
3
A741
5.5K to 15K
MMF-08D24ES-RP4 BKO-CA1639H11
2
18.5K, 22K
MMF-09D24TS-RP7 BKO-CA1640H11
2
30K
MMF-12D24DS-CP2 BKO-CA1619H11
2
37K to 55K
3
•
Removal
1) Remove a fan cover.
2) After removing a fan connector, remove a fan block.
3) Remove the fan.
•
Reinstallation
1) After confirming the orientation of the fan, reinstall the fan so that the arrow on the left of "AIR FLOW" faces up.
<Fan side face>
2) Install fans referring to the above figure.
Fan
Fan connection
connector
1)
2)
3)
Fan block
Fan cover
AIR FLOW
CAUTION
•
Installing the fan in the opposite air flow direction can cause the inverter life to be shorter.
•
Prevent the cable from being caught when installing a fan.
•
Switch the power off before replacing fans. Since the inverter circuits are charged with voltage even after power off,
replace fans only when the inverter cover is on the inverter to prevent an electric shock accident.
Summary of Contents for FR-A741-11K
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