The field service engineer (fse) was dispatched on (b)(4) 2015.The fse found intermittent high rbc on manual mode only compared to automatic mode and parts were ordered.Automatic mode was verified and validated.Another fse returned and replaced the bsv (blood sampling valve) to address the reported issues and adjusted the rbc, hgb, and mcv calibration using the normal control.The instrument ran without further issues and all repairs were verified per established service procedures.(b)(4).
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The customer reported they performed a mode to mode comparison (manual mode to auto mode) on the coulter lh 750 hematology analyzer, red blood count (rbc) did not match and h&h (hemoglobin and hematocrit) check failed.The customer stated mode to mode ran earlier was okay and now preferred not to troubleshoot and requested service.There was no death, injury, or change to patient treatment and no report erroneous results were generated in connection with the reported event.
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