TM 3-4230-218-12&P
(3) In high humidity areas,a slight decrease of the ambient temper-
ature will cause air moisture to form condensation.
Keep fuel
lines well covered and engine in a warm dry area. Reduce
corrosion in high humidity areas by using warm, dry storage
areas. Keep the engine covered and dry as possible.
2-12.
EMERGENCY PROCEDURES.
a.
Emergency Shutdown.
(1) Burner Shutdown.
Burner control system in this unit is normal-
ly closed and is "fail-safe”.
There is, however, one failure
which requires a different style of burner shutdown. If burner
will not extinguish when THERMOSTAT SELECTOR switch is set
to OFF (OPEN MAG VALVE light remains OFF or ON). Perform
the following:
(a)
(b)
(c)
(d)
(e)
(f)
(g)
(h)
(i)
(j)
Set BURNER FUEL VALVE fully clockwise.
Carefully loosen heater fuel can lid and lift hoses until
suction, filter, and return lines are both above fuel level.
Listen for burner to cease operation (about 2 to 5 min-
utes).
Observe that no flow is coming from return line.
Carefully position hoses so they do not drip fuel on any
hot surfaces. DO NOT REPLACE INTO FUEL CAN.
Adjust WATER PRESS REGULATOR valve to maximum
clockwise position.
Run unit until indicated temperature is 40°C or less.
If freezing temperature exist, shutdown unit in accordance
with page 2-40.
Shut off engine.
Notify Organizational Maintenance of malfunction.
(2) If Engine Failure Occurs. If engine failure occurs, perform the
following:
(a) Turn THERMOSTAT SELECTOR switch to OFF.
(b) Attempt to re-establish fuel flow to engine by squeezing
engine fuel line ball pump until fuel appears in in-line
filter.
Prime carburetor and attempt to re-start.
(c) Check for lack of/or contaminated fuel. Replace fuel if
necessary. Attempt to re-start.
2-43
