TM 3-4230-218-12&P
Section III.
PRINCIPLES OF OPERATION
Para.
General . . . . . . . . . . . . . . . . . ..1-10
Engine Principles of Oper-
ation . . . . . . . . . . . . . 1-11
Air System Principles of
Operation . . . . . . . . . . .1-12
Water System Principles of
Operation . . . .. . . . . . ..1-13
Heat Exchanger System Prin-
ciples of operation . . . . . ..1-14
1-10.
GENERAL.
a.
The decontaminating apparatus
Para.
Electronic Control Module
Principles of Opera-
tion . . . . . .. . . . . . ..1-15
Engine Fuel System Prin-
ciples of Operation. . . .1-16
Heater Fuel System Prin-
ciples of Operation. . . .1-17
has five major systems:
the engine,
the air system, the water system, the heater system, and the electronic con-
trol system. These systems provide a supply of pressurized, temperature-
controlled water.
After the system is operating, the operator is required to
periodically monitor the output water temperature and fuel supplies.
b.
No external power is required to operate the system. Only a source
of water and fuel is needed.
Decontamination may be conducted in the follow-
ing three ways:
(1) Decontamination of material and equipment using the cleaning
wands.
(2) Decontamination of personnel using the showers.
(3) Decontamination using the injector and decontaminating agents.
1-11.
ENGINE PRINCIPLES OF OPERATION.
a.
The engine is a one-cylinder, 2-cycle, air-cooled, power source that
develops 7.3 horsepower at 4250 rpm.
A centrifugal clutch drives the combus-
tion air fan, the water pump, and the heater fuel pump. The clutch begins to
drive the fan, water pump, and fuel pump when the engine speed exceeds 2700
rpm.
A diaphragm fuel pump operates on pulsating crankcase pressure to
supply fuel to the engine carburetor.
b.
The engine has a built-in generator. The generator
at 17 watts to power the electronic control system.
A manual
used to start the engine.
supplies 6 V-ac
recoil starter is
1-9
