Siemens has completed an investigation of the reported event.The root cause was determined to be a workmanship error.The investigation was performed considering complaint description, cs reports and system history.Prior to the incident, the handle was removed and put back on as part of service required during a maintenance activity.The engineer performed service activities not in accordance to established operator manual documentation.After preventive maintenance activities the function of the brakes must be checked in accordance with iec (b)(4).As this is the first occurrence of this error, the manufacturer will improve the service documentation regarding the position of the handles.
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