ABB Frequency Converter ACC 601-0020-5

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 checks indicate fan failure, proceed with fan replacement

Fan can be withdrawn by removing the bottom of the frame

Upload a photo of the removed fan

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

Warning: Only use ABB specified spare parts for replacement

Current hours on the capacitors

If capacitor failure is suspected, contact ABB for replacements

Upload a photo of the suspected faulty capacitor

Describe the symptoms of the suspected capacitor failure

Sign off on the capacitor check

Reforming: Reform (re-age) spare part capacitors once a year according to ACS 600 Capacitor Reforming Guide (code: 64059629).

Warning: The heatsink fins pick up dust from the cooling air. The ACx 600 can run into overtemperature Warnings and Faults if the heatsink is not cleaned regularly.

In normal environment, the heatsink should be checked and cleaned annually.

The dust should be removed gently with a soft brush if the cleaning is carried out in the same room where the unit is normally operated.

Dust removed gently with a soft brush?

Compressed air should not be used for cleaning unless the installation can be taken apart and the cleaning is carried out in another room (or outdoors).

Was compressed air used for cleaning?

Fan rotation should be prevented (in order to prevent bearing wear) when using compressed air for heatsink cleaning.

Was fan rotation prevented during cleaning?