ABB Frequency Converter ACC 601-0070-5

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.

Select the method used for cleaning

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.

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).

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

Sign off on the heatsink cleaning

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The fan can be withdrawn by removing the bottom of the frame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

Warning: This procedure requires trained personnel with PPE!

Is there a mains fuse failure or a Fault trip?

If there is a mains fuse failure or a Fault trip, contact ABB for capacitor replacement.

Capacitor replaced with ABB specified spare part?

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

Sign off on the capacitor replacement