Mitsubishi Electric FR-F740 EC Instruction Manual page 622

Inspection
● Removal of the fan (FR-F746-00083 to 01160)
Remove the fixed srews to remove the fan cover.
Remove the fan cover.
Remove the fan connector.
Remove the cooling fan.
● Reinstallation of the fan (FR-F746-00083 to 01160)
After confirming the orientation of the fan, reinstall the fan so that the arrow on the left of
"AIR FLOW" faces up.
NOTE Installing the fan in the opposite air flow direction can cause the inverter life to be shorter.
Connect the fan connection connector to return the connector to the original position. When
wiring, care must be taken to avoid the cables being caught by the fan.
Install the fan cover.
Fix the fan cover with the fixing screws.
Replacement procedure of the cooling fan when using a heatsink protrusion attachment
(FR-A7CN)
When replacing a cooling fan, remove a top cover of the heatsink protrusion attachment and per-
form replacement. After replacing the cooling fan, replace the top cover in the original position.
8 - 14
Fan side face
Top cover
Maintenance and inspection
Fig. 8-11:
Orientation of the fan
Fig. 8-12:
Replacement procedure of the cooling fan
when using a heatsink protrusion attachment
I001334E
I001356E