B3.Date of event: unknown.No information has been provided to date.D5.Other operator of device: operator of device is unknown.Investigation summary: the affected device was returned for evaluation.The pcb was damaged with broken lcd and led's, the float switch was stained, the pump was noisy, and the heater was rusty.After visual inspection, the water tank was filled with water, the disposable temp check was attached, the line cord was plugged in, and the power switch was turned on.The customer's indicated failure could not be replicated as the device didn't alarm due to the pcb being too damaged.As a result, no root cause could be determined.The float switch, pump, pcb, and heater were replaced.Calibration and preventative maintenance were performed, and all alarms were tested and performed as they should.A review of the device history record (dhr) shows there were no observations or nonconformities recorded during manufacture to suggest an issue of this nature would occur with this lot of products.
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