TM 9-2330-246-14
2-18. OPERATING HEATER (M373A2D AND M373A5).
a. Operating Heater for Ventilation.
(1) Open air inlet opening cover on outside of semitrailer, adjacent to heater.
(2) Place control switch to VENT position.
(3) To stop ventilating action, place control switch to OFF position and close air inlet opening cover.
b. Operating Heater for Heat.
(1) Open air inlet opening cover on outside of semitrailer, adjacent to heater.
NOTE
A white pilot light indicates normal operation of heater. A glowing red pilot light
Indicates a heater malfunction.
(2) Set thermostatic switch to desired setting and place control switch to HEAT position.
(3) To shut off heater, place control switch to OFF position and close air inlet opening cover.
2-19. OPERATING FIRE EXTINGUISHER (M348A2G, M348A2H, M348A2K, AND
M348A2N).
a. Remove fire extinguisher from mounting
bracket by releasing clamp.
b. Rotate horn (3) to an UP position. Break
safety wire and remove safety pin (1).
c. Squeeze trigger (2) and aim horn (3) at the
base of the flame.
TA700152
2-17