A steris service technician arrived on site following the reported event to inspect the reliance vision washer and found evidence of charring and the wiring around the light assembly was melted.Based on the technicians inspection, the root cause of the reported event can be attributed to the light ballast.The ballast is part of the lighting assembly and acts as a regulator that controls the electrical current to the light.The ballast had short-circuited, causing the light to spark and the reported event to occur.The reliance vision washer is under steris service agreement for maintenance activities and was installed in july 2010 making the unit approximately 9 years old at the time of the reported event.The last preventive maintenance was performed by steris in october 2019.At this time, the washer was found to be operating according to specification.No issues with the function or operation of the unit were identified.The technician replaced the unit's light assembly and ballast, ran several test cycles and found the washer to be operating according to specification.No additional issues have been reported.
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