(b)(4).Method: a routine service was carried out on the iw910aek baby control mobile infant warmer at the hospital facility by a trained fph service engineer.Our analysis is accordingly based on the service report provided by fph service engineer.Results: during servicing it was observed that the power fail alarm was not functioning, which was attributed to the super capacitor failure on the power pcb board.Conclusion: the subject infant warmer unit is more than 14 years old, and it is likely that the replaceable super capacitor on the pcb board had simply worn out.The super capacitor's function is to store sufficient electrical charge to power the 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 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 at least once a year.Included in the warmer's maintenance checklist is a test of the super capacitor to ensure it is operating within specifications.The subject infant warmer was repaired, and returned to the hospital service after passing the performance checks and electrical safety tests specified in the product technical manual.
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