(b)(4).Method: the subject iw990afu manual control wall mount infant warmer was serviced by the fph subcontractor at the healthcare's facility.Our analysis is accordingly based on the information provided by the subcontractor and our knowledge of the product.Results: during servicing, it was noted that the unit did not pass the power fail alarm test.The root cause was identified to be the failure of a super capacitor on the pcb board.Conclusion: it is likely that the replaceable super capacitor on the pcb board has simply worn out as the unit is almost 10 years old.The super capacitor's function is to store sufficient electrical charge to power the infant warmer's visual and audible alarms in the event of a failure of mains power.Part of fisher & paykel healthcare's quality control process involves testing the power failure alarm of every infat warmer on the production line for functionality prior to distribution.The device technical/service manual contains a checklist which specifies that users perform safety, performance, and functional checks including the power fail alarm at least once a year.Included in the infant warmer's maintenance checklist is a test of the super capacitor to ensure it is operating within specifications.The reported malfunction was discovered during the preventive maintenance check with no patient involvement.The infant warmer was repaired and a new capacitor was fitted to the pcb.The infant warmer was returned to the healthcare facility service after passing all the necessary safety and performance tests.
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A healthcare facility in (b)(6) requested a preventive maintenance check for their iw990afu manual control wall mount infant warmer.During servicing of the unit, which was conducted by a fisher & paykel healthcare (fph) servicing subcontractor in france, it was observed that the power fail alarm was not working.There was no patient involvement.
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