TM 3-4230-237-10
OPERATOR
M12A1 DIESEL ENGINE DRIVEN DECONTAMINATION APPARATUS
NSN 4230-01-502-7224
THEORY OF OPERATION
The pump unit is powered by a diesel engine that operates on diesel or JP-8 fuel. The fuel system is a circulatory system that
pumps fuel to the engine and burner and returns unused fuel to the fuel tank through a return line. Furthermore, the pump unit
fuel tank not only supplies fuel to the engine but also supplies fuel to the burner unit through two quick disconnects on the
control panel. The 50-amp alternator supplies power to both the burner unit and the pump unit. The control panel includes a
40-amp and a 15-amp circuit breaker, voltmeter, hourmeter, pre-heater switch, and a slave receptacle. The front and rear
engine panels have latches that allow access to the engine. In addition, the rear panel opens to allow venting of exhaust
during operation. The side engine panel has been vented and has an air intake cone that allows the system to operate without
physically removing the engine panels.
The water heater unit includes a self-contained burner. The burner assembly consolidates the fuel pump and voltage
transformer (igniter) with the motor-blower and electrode/nozzle. Two fuel lines are routed through the top of the burner unit
and are attached to the fuel filter and to the burner pump fuel return. These fuel lines, one a feed line and the other a return
line, connect to the pump unit fuel tank via the quick disconnects attached to the pump front panel. The control panel
includes a 15-amp circuit breaker, an ON/OFF switch, and a thermostat for water temperature.
END OF WORK PACKAGE
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