(b)(4).The complaint myairvo humidifier had not been received at fisher & paykel healthcare for evaluation.The customer had stated that he would return the device himself but to date it has not been received.A lot check revealed one other complaint of this nature for lot number 130320.Previous investigations into faulty speakers have shown that the problem is usually the result of an open circuit in the speaker.The supplier of the speaker unit was notified and they have carried out an investigation.The problem has been traced to an issue with the gluing process.The supplier has taken steps to ensure that each speaker is checked following the gluing process and any found faulty are discarded.The subject myairvo was manufactured before the supplier implemented these additional checks.The myairvo 2 user manual states that the "myairvo is for the treatment of spontaneously breathing patients who would benefit from receiving high-flow, warmed and humidified respiratory gases." and that "the unit is not intended for life support." the user manual also contains instructions on how to check the alarm system functionality and states that "if either alarm signal is absent, do not use the unit.Contact your fisher & paykel healthcare representative.".
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