This mdr was generated under protocol (b)(4), as a result of warning letter cms# (b)(4).Manufacturing device history record review was not performed because the results of the complaint investigation do not indicate a problem with the manufacture of the device.No causes or potential causes of the customer's reported problem were found during the review of service and repair records.A product sample was received for evaluation.Visual and functional testing were performed.Plunger assembly seal was removed/broke.Physical damaged (dent) on lower left front.No error which related to customer reported problem was found in event history log.Flippers were found badly misaligned and were not moving when plunger lever was pressed.The root cause of the reported issue was found to be incorrect assembly in the plunger head by customer.Reassembled the whole plunger assembly.Performed power up process and all functional testing which passed.
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