Black smoke appeared from back of medivator dsd edge located in endoscopy lab decontamination room.Staff called out for help.Co-worker then attempted to cut power to machine from wall circuit.Machine continued to smoke and grow larger, but co-worker was too short to reach back to unplug machine from wall.Another staff member reported to room jumped on counter reached behind machine and pulled electrical cord out of machine/unplugged from machine (still connected to wall).Smoke/flames/sparks slowed stopped and team cleared out area and ventilated space.Risk alert: ground fault interrupter (gfi) located in machine was directly under hose (plastic) containing liquid chemical.Hose failed, fluid expelled onto internal outlet and caused electrical fire.All dsd edge machines in the ministry need to be assessed for the presence of a cover over this internal outlet to prevent fire/risk of fire!!!!!.
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