Other, other text: h6: event problem and evaluation codes: updated no lot number was provided; therefore, device history record review could not be performed.A product sample was received for evaluation.Visual and functional testing were performed.Visual inspection found no defect nor deformation was observed.Functional testing found no problem nor abnormality was observed - air was passing trough suction line both ways without any problem.Device passed all functional testing, unable to replicate the reported issue.No problem found.This issue will be monitored for any increase in occurrence.If the occurrence of this issue increases significantly, additional investigative action will be taken.
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