This event was managed by a fmc regional equipment specialist (res).It was determined the level detector module required replacement.The device was not operational until the detector module was replaced and calibrated by the customer function checks completed by customer.Machine released for service.Upgraded (b)(4).A device history record was extracted and device met requirements.This is a retrospective mdr being submitted by fresenius medical care as a remedication action committed to fda regarding all potential adverse events received between (b)(6) 2011 to (b)(6) 2013.
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