After locating the source of the white smoke, the scorched pressure switch was replaced.The device was tested and it was confirmed that the issue had been resolved.Manufacturing history of the device was reviewed.No issues were found.The device was installed at the healthcare facility in 2015 and has been in use since then.Further investigation revealed that due to poor hospital maintenance of its water supply system, a water shutoff valve rusted and became leaky.Water began to drip on the pressure switch of the affected device, eventually leading to the incident.
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