Manufacturing device history record review was not performed because the results of the complaint investigation do not indicate a problem with the manufacture of the device.No causes or potential causes of the customer's reported problem were found during the review of service and repair records.A product sample was received for evaluation.Visual and functional testing were performed.Visual inspection found wear and tear damaged enclosure and front cover, broken pole clamp and cracked tank cover, a noisy pump, outdated printed circuit board (pcb) and power switch.Functional testing found when the pump and motor were running they made lots of noise confirming the customer complaint.Unable to determine why the pump became noisy.The root cause of the issue could not be determined.This issue will be monitored for any increase in occurrence.If the occurrence of this issue increases significantly, additional investigative action will be taken.No action taken due to the age and condition of the device.It was deemed beyond economical repair and will be scrapped.D5 and e4 are unknown, no information provided to date.
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