Omron SYSDRIVE RV Series User Manual page 457

200 V Class Inverters of 55 kW, 75 kW and 400 V Class Inverters of 75 kW, 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. Pull the cooling fan power cable connector that extends from the fan cover cable hole out of the cooling
fan power relay board.
3. Only for 400 V Class Inverters of 75 kW and 90 kW, loosen the resistor unit mounting screws and slide the
resistor unit to remove it. Take care as the resistor unit is hot.
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.
Fan support
Fan power
relay board
-8
8
Front cover mounting screws
Terminal cover mounting screws
Airflow direction
Fan support
Fan support
mounting screws
Cooling fans
Resistor unit
mounting screws
Cooling fan mounting screws
Fig 8.6 Cooling Fan Replacement (400 V Class Inverters of 75 kW and 90 kW)
Front cover
Terminal cover
Circulation fan
mounting screws
Fan cable pullout position
Circulation fan
Airflow
direction
Cooling fans
Resistor
unit
Fan power cable pullout position
Cooling fan mounting screws