单项选择题
A.water in the fuel oil B.broken high tension leads C.incorrect electrode setting D.full fuel pressure at the nozzle
Which action should be taken when an auxiliary boiler i...
单项选择题Which action should be taken when an auxiliary boiler in is operation?（）
A.Clean all electrical connections B.Lift the relief valves by hand C.Inspect and clean all solenoid valves D.Inspect for oil and water leaks
Ignition failure in an automatically controlled auxilia...
单项选择题Ignition failure in an automatically controlled auxiliary boiler could be caused by（）
A.carbon deposits on the flame scanner B.high fuel oil temperature C.low fuel oil viscosity D.high steam pressure
Heavy soot accumulations in an auxiliary boiler could b...
单项选择题Heavy soot accumulations in an auxiliary boiler could be caused by（）
A.water in the fuel oil B.excessive cycling C.high fuel oil pressure D.improper burner maintenance
