276
Inspection items
(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.
Removal
1) Push the hooks from above and remove the fan
cover.
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) Disconnect the fan connectors.
3) Remove the fan.
2) Reconnect the fan connectors.
3) When wiring, avoid the cables being caught by the
fan.
4) Reinstall the fan cover.
Example for FR-D720-1.5K-G
NOTE
Installing the fan in the opposite of air flow direction can cause the drive unit life to be shorter.
Prevent the cable from being caught when installing a fan.
Switch the power OFF before replacing fans. Since the drive unit circuits are charged with voltage even after power
OFF, replace fans only when the drive unit cover is on the drive unit to prevent an electric shock accident.
AIR FLOW
<Fan side face>
Fan connector
Fan
Fan cover
2. Insert hooks until you
hear a click sound.
1. Insert hooks
into holes.
Содержание FR-D720-0.2K-G
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Страница 294: ...291 APPENDIX This chapter provides the APPENDIX of this product Always read the instructions before using the equipment ...