The exam room and the system were checked by siemens local service.According to the engineer, the fixing screws under the ceiling construction were loose.It is assumed that this issue is related to room preparation the installation instruction axb7-021.812.01.23.02, pages 22-26 and maintenance instruction xpb7-020.831.20.03.01, pages 69-72 contain detailed information on correct ceiling construction fixation.The customer was informed not to use the system until the issue is resolved.The transverse rail was dismounted by siemens local service.A team of technical experts visited the facility to conduct an investigation and secure the ceiling construction.The reported issue is under investigation and a supplemental report will be submitted if additional information becomes available.This report was submitted september 17, 2015.
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The investigation showed that the sub-construction was performed not according to the planning guide.Due to improper shimming and little contact areas the entire sub-construction was quite flexible, which led to the carriage wagon to slip out of the rail.The sub-construction is not a component of the ysio system.Therefore, no components of the ysio system were identified as a root cause for the derailing.A customer safety advisory notice was distributed to the customers in china via an update instruction xp055/15/s to inform about a potentially weak substructure fixation of the ceiling rail system and potential risk of the traverse to drop down.Siemens also released an update instruction xp054/15/s to prevent repetition of the failure by installing a safety clamp for the ceiling rail system.The under-ceiling construction is unique for healthcare facilities in china and the two update instructions were rolled out only in china.The modification was performed on future installed base to avoid any potential risks due to an incorrect sub-construction.According to the received information the reported issue at the concerned customer site has been repaired.This report was submitted august 17, 2016.
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