YASKAWA Varispeed G7 Series Instruction Manual page 468

200 V Class Inverters of 30 kW and 37 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
cooling fan power relay board. The cable that is connected to the control circuit terminals can be removed
together with the control circuit terminal board. (Refer to page 8-24)
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.
Terminal cover
Pay attention to
the protruding part
of the fan cable.
Airflow direction
-12
8
Front cover mounting screws
Front cover
Terminal cover mounting screws
Circulation fan mounting screws
Fan cover
Fig 8.8 Cooling Fan Replacement (200 V Class Inverters of 30 kW and 37 kW)
Fan support mounting screws
Fan cover
Panel mounting screws
Cooling fan power relay board
Gate drive
board
Panel
mounting
screws
Terminal
board
Circulation fan
Cooling fans
Capacitor
Cooling fan
mounting screws