Maintenance and Inspection
8-17
îš„200 V and 400 V Class Inverters of 18.5 kW
The circulation fan is installed at the top-left corner of the Inverter interior.
Removing the Circulation Fan
1. 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 Fan
Reverse 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 the
arrow).
Mount the fan securely using the fan tabs (B).
Confirm that there are no cables in contact with the fan’s rotating parts.
Fig 8.14 Circulation Fan Replacement (200 V and 400 V Class Inverters of 18.5 kW)
îš„200 V Class Inverters of 37 kW or More and 400 V Class Inverters of 75 to 160 kW
The circulation fan is installed in front of the fan cover inside the Inverter. Remove the circulation fan using
the procedure for replacing the cooling fan and replace it with the new fan. (The installation position for 200 V
Class Inverters of 75 kW is different.)
200 V Class Inverters of 90 kW
The circulation fan is installed behind the control board mounting panel. Do not subject the fan to shock dur-
ing replacement.
12
4
3
Circulation fan
Fan tabs (B)
Relay connector tab (A)
Airflow
direction
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