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Analysis was performed by onsite service personnel which included replication of the reported high/out-of-tolerance nbp reading, review of calibration test results, troubleshooting of the nbp subsystem and performance verification testing.He results of the analysis confirmed that the reported issue could be reproduced and that the nbp module was the source of the out-of-tolerance readings observed during calibration testing.Based on the results of the analysis, it was determined that the product has malfunctioned and the most likely cause of the reported problem was a defective nbp pump assembly.The issue was resolved by replacing the defective part.Following replacement, the device successfully passed nbp calibration, the full preventive maintenance (pm) procedure, and electrical safety testing (est), confirming that the corrective action restored normal operation.A review of the service history for this device shows that the issue was corrected through replacement of the nbp module and no subsequent recurrence was identified following verification testing and return to service.E1: reporting institution phone#: (b)(6).E1: reporter phone#: (b)(6).
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