What was found
IAD - FLT 2753 - ON CLIMB-OUT FROM IAD, AT FL220, THE NR 1 ENGINE FUEL HEAT VALVE OPEN LIGHT ILLUMINATED AND THE NR 1 ENGINE OIL TEMPERATURE WENT INTO THE YELLOW BAND. CAPTAIN ACCOMPLISHED SPECIAL PROCEDURES, SHUT DOWN THE NR 1 ENGINE AND DECLARED AN EMERGENCY. FLIGHT RETURNED TO FIELD AT IAD AND LANDED WITHOUT FURTHER INCIDENT. TOTAL SINGLE ENGINE TIME WAS 22 MINUTES. MAINTENANCE CLEANED THE NR 1 ENGINE FUEL HEAT VALVE CANNON PLUG AND REINSTALLED ONTO FUEL HEAT VALVE. OPERATIONAL CHECK GOOD. RAN ENGINE AT VARIOUS POWER SETTINGS. ALL INDICATIONS NORMAL. (M)