The device was returned to resmed for evaluation.A review of the downloaded device logs showed high occurrences of air leaks.Inspection revealed physical damage to the device and tape was placed over the filter door.The internal components were contaminated by dust and an unknown substance causing the device to not function properly.Based on the evaluation results, the device failure was due to physical damage and internal contamination.Resmed's risk analysis for this failure mode concludes that the risk is acceptable.Resmed reference #: (b)(4).
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