g. Wheel Retracting Handle. T h e w h e e l
trip lever (fig. 1-1 and 2-2), is a safety guard used to
r e t r a c t i n g handle (fig. 1-2), located on the left and
stop the flow of fuel to the burner when the air from
to the rear of the heater, is used for manually
the propeller fan slackens or stops. After the engine
r a i s i n g or lowering the wheels on the heater.
The
has been started, pull out manually on the safety
w h e e l s may be lowered to move the heater easily on
t r i p lever (fig. 2-2) to open the valve and to allow
hard surfaces. The wheels should always be
fuel to reach the burner. The valve will remain open
retracted during the operation of the heater to aid in
as long as the air flow to the ducts is constant. When
wheeling the unit and to reduce vibration. Pull the
t h e air flow slows or stops, the air safety trip door
handle rearward to raise the wheels. Release the
a u t o m a t i c a l l y opens because of lack of air pressure
handle slowly when retracting the wheels to avoid
inside the heater causing the safety trip valve to
jarring the unit.
shut off the fuel flow to the burner. The burner fire
h. Safety Trip Valve. The safety trip valve,
w i l l be extinguished by the lack of fuel.
located at the bottom and on the inside of the safety
i. Burner Overheat Safety Valve. The b u r n e r
is used to start and stop the engine. It is a toggle-
overheat safety valve is located inside and at the
type, on-off switch.
k. Inlet Temperature Control. The inlet
bottom left front side of the heater. It is a ther-
mostat-type valve operated by a liquid-filled
temperature control handle (fig. 1-1) is located on
the left side and at the rear of the au cleaner. It
s e n s i t i v e bulb (fig. 1-2). If the heated air from the
regulates the air supply to the engine and the
unit exceeds a certain predetermined temperature,
the valve will act to limit the fuel flow, reducing the
control is set before operation by the operator. The
setting is determined by the ambient temperature.
h e a t output to a safe level. Whenever this occurs,
c l o s e the burner fuel line shutoff valve and locate
Instruments
and correct the cause. After the burner has been
The fuel level gage is tbe only instrument on the
permitted to cool, relight it.
heater. it is located on the top of the fuel tank, and
it indicates the amount of fuel in the tank.
located on the top left side of the flywheel housing,
Section
III.
OPERATION
UNDER
USUAL
CONDITIONS
2-6. General
b. T h i s s e c t i o n c o n t a i n s i n s t r u c t i o n s o n s e t t i n g
up the heater, starting the engine, lighting the
a. The instructions in this section are for the
burner and the shutting down operation.
information and guidance of personnel responsible
for operation of the gasoline heater.
