The device was not returned to olympus for evaluation.Olympus technical assistance center advised the customer to do an air purge of the internal filter to resolve the issue.A review of the device history record found no deviations that could have caused or contributed to the reported issue.Based on the results of the investigation, it is likely that the following led to the malfunction: the air purge after replacing a water filter was insufficient or omitted; however, a definitive root cause cannot be identified.This issue is addressed in the instructions for use (ifu): "chapter 4 installation of equipment 4.12 discharging air from the water filter housing caution: after attaching the water filter, be sure to discharge air from the water filter housing completely.If air is left in the water filter housing, the process time may be extended.Air should be removed whenever process time is extended or other irregularity are noticed." olympus will continue to monitor the field performance of this device.
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