One device was received for evaluation.Visual inspection found the tamper seal was removed, a scratched lens, and the downstream sensor seal was lifted.The device's event history log was reviewed for evidence of the reported problem but found nothing.Functional tests were conducted.Upon testing, the reported problem was unable to be duplicated.The service history review identified no indication that the complaint was related to a service of the device within the review period.B3: unknown, corrected data: health effects cottected.
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