8 -14200 V and 400 V Class Inverters of 18.5 kWThe circulation fan is installed at the top-left corner of the Inverter interior.Removing the Circulation Fan1. Remove the Digital Operator, the terminal cover, and the front cover.2. While pushing the relay connector tab (A) in direction 1, pull the relay connector out in direction 2.3. While pushing the fan tabs (B) in direction 3, pull the fan out in direction 2.4. Remove the relay connector connected to the fan.Mounting the Circulation FanReverse the above procedure to mount the fan.Be sure to mount the fan so that the air flows towards the bottom of the Inverter (direction indicated by thearrow).Mount the fan securely using the fan tabs (B).Confirm that there are no cables in contact with the fan’s rotating parts.Fig 8.9 Circulation Fan Replacement (200 V and 400 V Class Inverters of 18.5 kW)200 V Class Inverters of 37 kW or More and 400 V Class Inverters of 75 to 160 kWThe circulation fan is installed in front of the fan cover inside the Inverter. Remove the circulation fan usingthe procedure for replacing the cooling fan and replace it with the new fan. (The installation position for 200 VClass Inverters of 75 kW is different.)200 V Class Inverters of 90 kWThe circulation fan is installed behind the control board mounting panel. Do not subject the fan to shock dur-ing replacement.Removing the Circulation Fan1. Remove the terminal cover, the Inverter cover, the Digital Operator, and the control board cover.1243Circulation fanFan tabs (B)Relay connector tab (A)Airflowdirection
