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6
PRECAUTIONS FOR MAINTENANCE AND INSPECTION
(2) Replacement procedure of the cooling fan when using a heatsink protrusion attachment
(FR-A7CN)
• Removal (FR-A740-160K or higher)
1) Remove a fan cover.
2) After removing a fan connector, remove a fan block.
3) Remove the fan. (Make sure to remove the fan cable from the clamp of the fan block beforehand.)
* The number of cooling fans differs according to the inverter capacity.
• Reinstallation (FR-A740-160K or higher)
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.
When replacing a cooling fan, remove a top cover of the
heatsink protrusion attachment and perform replacement.
After replacing the cooling fan, replace the top cover in the
original position.
Fan *
Fan connection
connector
1)
2)
3)
Fan cove
r
Fan block
Unlock the clamp, and
pull out the cable.
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.
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