ABB ACH550-01 User Manual page 393

Main fan replacement (frame sizes R1...R4)
To replace the fan:
1. Disconnect the drive from main power.
2. Remove the drive cover.
3. For frame sizes:
• R1 and R2: Press together the retaining clips on the fan
cover and lift.
• R3 and R4: Press the lever located on the left side of the
fan mount and rotate the fan up and out.
4. Disconnect the fan cable.
5. Reinstall the fan in reverse order.
6. Restore power.
Arrows in the fan show the directions of the rotation and air flow.
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ACH550-01 User's Manual
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Diagnostics and maintenance