Mitsubishi Electric FR-D720 K Series Instruction Manual page 286

Inspection items
Reinstallation
1) After confirming the orientation of the fan, reinstall
the fan so that the arrow on the left of "AIR FLOW"
faces up.
2) Reconnect the fan connectors.
3) When wiring, avoid the cables being caught by the fan.
3.7K or lower
4) Reinstall the fan cover.
3.7K or lower
2. Insert hooks until you
hear a click sound.
Example for FR-D740-1.5K
NOTE
 Installing the fan in the opposite of 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.
282
1. Insert hooks
into holes.
<Fan side face>
5.5K or higher
5.5K or higher
1. Insert hooks
into holes.
Example for FR-D740-7.5K
AIR FLOW
2. Insert hooks until
you hear a click
sound.