ABB Frequency Converter ACC 601-0020-3

Warning: The heatsink should be checked and cleaned annually to prevent overtemperature warnings and faults.

If using compressed air, ensure the cleaning is carried out in another room or outdoors.

Was fan rotation prevented during cleaning?

Sign off on the heatsink cleaning

Warning: Only trained personnel should perform this procedure.

Enter the current hours of the ACx 600 intermediate circuit

Check if the frequency converter loading and the ambient temperature are within acceptable limits

Is there a mains fuse failure or a Fault trip?

If capacitor failure is suspected, contact ABB. Do not attempt operation with non-ABB specified spare parts.

Upload a photo of the suspected faulty capacitor

Sign off on the capacitor replacement procedure

Warning: Only trained personnel should perform this procedure

Enter the current usage hours of the ACx 601 unit

Is there increasing noise from fan bearings?

Is there a gradual rise in the heatsink temperature despite cleaning?

Is the frequency converter operated in a critical part of a process?

If the above symptoms are present, fan replacement is recommended

The fan can be withdrawn by removing the bottom of the frame

Replacement fans are available from ABB. Do not attempt operation with other than ABB specified spare parts

Sign off on the fan replacement procedure