Operator of device is unknown; no additional information was received.The device was returned for evaluation.It was received intact with no damage.Functional tests -factory calibration, hi/lo calibration, and flowrate test- were performed.The reported problem of stop and starts was not verified but the customer did not send in their water trap.For the evaluation of the 1616 ac cord, it had 24 volts but the end of it was wrapped with tape.The wave form problem was verified, the readings were out of specification.The bench was replaced, factory calibration and a hi/lo calibration were performed; thereafter, the readings were within specifications.The reported problem was caused by a defective bench; but root cause could not be determined.This was the first time this service was put in for service after six years in the field and the failure resulted from malfunctioning co2 bench.The device history record (dh) review was not applicable or relevant because the results of the complaint investigation do not indicate a problem with the initial manufacture or prior repair of the device.The device was manufactured in 2013.This remediation mdr was generated under protocol (b)(4), as a result of warning letter cms# (b)(4).
|