The complaint device was returned for evaluation.Incoming visual inspection found the device had a cracked frame and the case was chipped and cracked.Technical visual inspection found no anomalies.Device evaluation identified intermittent co2 equipment malfunction.The power board was refurbished with no parts used.The coil was replaced.The device was re-calibrated.The software was set to p.01.46.The case, and front and rear connectors were inspected.All pcb boards were tested.The firmware revision, flow rate, gas calibration, and leak check, were all tested and passed.The root cause for the co2 equipment malfunction was the bad lamp.The root cause for the co2 malfunction was determined to be the coil of power board becoming worn out due to use.This type of event will continue to be monitored.
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Reportedly, post repair, the device was displaying a co2 malfunction as soon as the tubing was plugged in.The tubing was changed as well as the monitors with the same result.Additionally, the relay click for the pump can be heard, but it does not run and the co2 malfunction error displays.There was no patient involvement.No additional information is available.
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