(b)(4).Method: the subject mr810 respiratory humidifier was received by the fisher & paykel healthcare (fph) service centre in (b)(4) for servicing.The damaged power cord was then returned to fph in new zealand for evaluation and was visually inspected.Results: visual inspection revealed bite marks on the outer sleeve of the returned power cord.Conclusion: the presence of bite marks suggest that the power cord was damaged by rodents.During production the electrical connections of the earth wires on all mr810 units are 100% tested for electrical continuity.In addition, all mr810 units are visually inspected before release for distribution.This suggests that the reported damage occurred after the subject mr810 had been distributed.The mr810 product technical manual contains a maintenance schedule which instructs the user to conduct annual visual checking, performance and electrical safety testing of the mr810 respiratory humidifier.In addition, the product technical manual also states that 'after servicing the humidifier should be electrically safety tested, and performance tested, to ensure correct operation'.The mr810 respiratory humidifier is compliant with electrical standards ul 60601-1, iec 60601-1, can/csa c22.2 no.601.1 the user instructions that accompany the mr810 respiratory humidifier state: -'visually inspect equipment for damage before use.' the damaged power cord was replaced by our service centre and the subject mr810 was returned to the customer after passing performance and safety checks.
|