Following the reported event, the unit was removed from service.A steris service technician arrived onsite to inspect the warming cabinet.The technician identified that the plastic button located on the unit's momentary pushbutton switch required replacement.The pushbutton switch spring made contact with the metal surface of the warming cabinet door which caused an electrical arcing on the warming cabinet door and the reported event to occur.The electrical arcing created enough heat to melt a portion of the plastic control panel.The technician replaced the pushbutton switch and control panel on the warming cabinet, tested the unit, and found it to be operating properly.The unit was returned to service.
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