Resubmission of initial report as per fda on 4/3/19.The issue was investigated in detail.The investigation showed that the brakes of the lift drive were not activated after movement.During start of any movements the brakes will be released.After deactivation of any movements the brakes will be engaged.In this case the lift drive was activated and after the deactivation the brake did not engage (as specified).The table moved downwards by itself since the weight of the table cannot be stopped by the gear.The movement of the table is a slow, not motorized, movement to the floor.It was found that the interface board cdbe was defective which caused this issue.After replacing this affected component the problem did not reoccur.The spare part consumption of the concerned interface board cdbe (material number 10656098) shows values that are below the defined threshold.No general problems and also no failure clusters regarding this kind of defect are known.
|