American U. S. Injector.
Q. How do you start an injector to work?
A. To start an injector, open the suction valve wide, then open steam valve. If water appears at the overflow, close and open quickly the suction valve, opening only about ¼ of a turn if at low steam pressure, and one turn or more if at high steam pressure, regulating the water supply according to steam pressure. The injector is controlled entirely by the valve in suction pipe, or by the suction lever after the steam is turned on.
Q. Will an injector work with hot supply water?
A. An injector will not work if the water that is delivered from the tank is too hot to condense the steam.
Q. What are the principal causes of an injector not working accurately?
A. Leak in suction pipe, supply cut off by strainer being clogged, loose lining inside the hose, leak in the stem of valve, too little steam pressure to lift, dirt in the tubes, red lead blown or drawn in through steam or supply pipe, bad check valve, not lift enough or none at all, new boiler full of grease, wet steam, obstruction in the connection to the boiler.