Maintenance and Inspection
8-7
îš„200 V and 400 V Class Inverters of 18.5 kW or More
A cooling fan is attached to the top panel inside the Inverter.
The cooling fan can be replaced without removing the Inverter from the installation panel.
200 V Class Inverters of 18.5 kW
Removing the Cooling Fan
1. Remove the terminal cover, Inverter cover, Digital Operator, and front cover from the front of the Inverter.
2. Remove the control board bracket to which the boards are mounted. Remove all cables connected to the
controller. The cables connected to the control circuit terminals can be removed at the same time by
removing them together with the control circuit terminal board. (Refer to page 8-21)
3. Remove the cooling fan power cable connector (CN26 and CN27) from the gate drive board positioned at
the back of the control board.
4. Remove the fan cover screws and pull out the fan cover from the Inverter.
5. Remove the cooling fan from the fan cover and replace it with a new one.
Mounting the Cooling Fan
After attaching a new cooling fan, reverse the above procedure to attach all of the components.
When attaching the cooling fan to the mounting bracket, be sure that the airflow faces the top of the Inverter.
Fig 8.2 Cooling Fan Replacement (200 V Class Inverters of 18.5 kW)
Control board bracket
Control board
Gate drive board
Fan cover
Connector
Airflow direction
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