Device evaluation: one device was returned for investigation.Visual inspection noted the device had cracks on the water tank enclosure, pole clamp screw was lose, and the reflux plug was broken.Functional testing began with filling to check if device is leaking - leak was confirmed.Pole clamp was tested - screw is loose."pwa" was also visually checked and the plastic display support was missing.After replacing the damaged/broken parts device was tested and temperature was set.Complaint was confirmed.What caused the damage could not be established.Service history review identified the device had been returned within 2 weeks for prior service where routine maintenance service was performed in (b)(6) 2023.The tank gasket and interlock block o-rings were replaced per debrief records.Therefore, the tank cover showed no damage during the prior repair and no damage to the pole clamp and reflux plug was noted, implying the device likely sustained a physical damage after the last repair.Water tank enclosure, pole clamp, "pwa" and on/off switch were replaced.Device passed functional testing after the completed repairs.
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