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Precautions for Maintenance and Inspection
5) Loosen the screws that fasten the cooling fan mounting fixture and pull out the cooling fan mounting fixture.
Pull it out slowly, exercising care not to bring the cooling fan into contact with the printed board.
(The screw holes of the cooling fan mounting fixture are pear-shaped.)
6) Pinch the cable bushing with a pair of long-noise pliers etc. and remove the cable bushing.
7) Remove the cooling fan from the cooling fan mounting fixture, and change the cooling fan.
When reinstalling the cooling fan, take care so that the arrows given on the cooling fan point as shown below.
8) Reinstall the cooling fan to the power regeneration common converter unit in the reverse procedure.
Note: If the air flow is set in the wrong direction, the inverter life can be shorter.
Cooling fan mounting fixture