YASKAWA Varispeed G7 Series Instruction Manual page 471

200 V Class Inverters of 90 kW and 110 kW/400 V Class Inverters of 132 kW and 160 kW
Removing the Cooling Fan
1. Remove the terminal cover and the front cover from the front of the Inverter.
2. Remove any cables that are connected to the cooling fan power relay 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.
Front cover mounting screws
Terminal cover mounting screws
Circulation fan mounting screws
Fan cover mounting screws
Fan power relay board
* 1. There is no finger guard mounted to the fan for some capacities. (There is a guard on the Inverter side.)
* 2. There is no fan ground cable for the capacities without a finger guard.
Fig 8.11 Cooling Fan Replacement (200 V Class Inverters of 90 kW and 110 kW)
Fan cover Fan cover mounting screws
Fan power
relay board
Gate drive
board
Front cover
Control board
Terminal
cover
Circulation fan
Fan cover
Fan airflow
direction
Fan ground cable
Maintenance and Inspection
Circulation fan
airflow direction
Fan cover
Fan mounting
screws
*1
Finger guard
Cooling fan
*2
15
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