TM 9-4540-202-12&P
3-1. GENERAL - Continued
Table 3-1. Operator/Crew Troubleshooting - Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
c. Open the fuel valve and fill the igniter cup 1/4 full of fuel (Item 2, Appendix E).
d. Close fuel valve.
e. Ignite fuel in the igniter cup with a match.
f. Move igniter handle to the right and return the cup to the flue compartment to preheat the flue for one
or two minutes.
Step 4. Check for water in the combustion chamber.
a. Turn off heater.
b. Remove the smokestack from the immersion heater collar.
c. Using a flashlight, look down the flue compartment into the combustion chamber to see if any water is
present in the chamber.
Clear water from the combustion chamber.
(1) Lift fuel tank off square mounting stud on heater mounting bracket (Figure 3-1).
(2) Turn the heater upside down so that any accumulation of fuel or water in the combustion
chamber can drain out.
(3) Reinstall burner inside heater body.
(4) Position fuel tank on the square mounting stud on the heater mounting bracket.
(5) Reinstall smokestack.
2. BURNER GOES OUT.
Step 1. Check for a dosed or clogged vent plug.
Clear vent plug.
a. Open the vent plug by turning the plug counterclockwise.
b. Clean out a clogged vent plug with a pointed tool or stiff wire.
3-4
