TESTING AIR HEATER FOR RM1 SINCE IT WAS REBUILT BECAUSE OF THE FIRE OF 1/26/04. THE HEATER WAS STARTED AND THE PRODUCT WAS CHECKED. IT APPEARED GRAY AND THE HEATER WAS SHUT DOWN IMMEDIATELY (JUST A FEW MINUTES AFTER IT WAS STARTED). THE FLAME WOULD NOT GO OUT AND THE FIRE DEPARTMENT WAS CALLED. (FIRE WAS EXTINGUISHED AT 3:28 PM.)