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A new customer had four Control Techniques SK5401 inverters that had all suffered catastrophic failures due to moisture ingress from an external source. 

Each drive reported a multitude of hardware faults and the only way forward was to replace the main boards within the drives [UT-46 & UT57]. New boards were exclusively available from the OEM as part of a kit.

Each drive was stripped to the bare bones, all signs of moisture and dust removed, then fully reassembled and tested with our 75KW induction motor. We used our test parameter set, then reinstalled the customer parameter set, then upon reinstallation on site the customer would see no difference other that a now fully functional drive.

Feedback from the customer was positive and our service was described as second to none.


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