8
-10
200 V Class Inverters of 90 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 panel to which the control board, the gate drive board, and the cooling fan power relay board
are mounted. Remove any cables that are connected to the control board the gate drive board, and the cool-
ing fan power relay board. The cable that is connected to the terminal board can be removed together with
the terminal board.
3. Remove the fan cover screws and pull out the fan cover from the Inverter.
4. 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 8.5 Cooling Fan Replacement (200 V Class Inverters of 90 kW)
Front cover mounting screws
Front cover
Terminal cover
Terminal cover mounting screws
Fan cover
mounting screws
Fan cover
Fan power relay board
Control board mounting
panel
Control board mounting
panel mounting screws
Control circuit terminal board
Gate drive board
Cooling fan
power connector
(CN26)
Circulation fan
Cooling fan airflow direction
Fan cover
Cooling fan
Cooling fan mounting screws
Finger guard
Cooling fan
airflow direction
Circulation fan
mounting screws
Control board mounting panel
Note: A finger guard is not provided on lnverter with slits.