YASKAWA CIMR-F7A Instruction Manual page 415

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
mounting screws
Fan support
Fan power
relay board
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 mounting screws
Front cover
Terminal cover
Terminal cover mounting screws
Circulation fan
mounting screws
Circulation fan
Airflow direction
Fan support
Airflow
direction
Resistor
unit
Cooling fans
Maintenance and Inspection
Fan cable pullout position
Cooling fans
Cooling fan mounting screws
Fan power cable pullout position
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