TM 9-4110-255-14
SECTION IV OPERATION UNDER UNUSUAL CONDITIONS
2-9. OPERATION UNDER INCLEMENT WEATHER
The refrigeration unit is designed to operate under adverse environmental conditions such as rain, snow, etc. in
temperatures from 0F to 125F (-17C to 52C). Follow the startup procedures given for usual conditions and apply
the following procedures, as necessary, for operation in high temperatures (104F to 1250 F (45C to 52C)) and low
temperatures (40F to 0F (4C to -17C)).
WARNING
Operating the refrigeration unit in a building or any enclosed area without the exhaust gases
piped outside can result in serious illness or death.
The refrigeration unit engine produces dangerously high noise levels reaching 96 dB (A) at
the service position. Approved hearing protection must be worn any time personnel are
within 12 feet of an operating unit to avoid temporary or possibly permanent hearing damage.
a. Hot Weather (104 F to 125 F (45 C to 52 C)). Notify unit maintenance to drain and fill the engine with
appropriate lubricating oil for hot weather.
b. Cold Weather (40 F to 50 F (4 C to -15 C)). Before placing the toggle switch (START/RUN, OFF,
GLOWPLUG) (7, fig. 2-4) handle in the START/RUN position, place and hold in the GLOWPLUG position for 30
seconds.
c. Cold Weather (5F to 0F (-15C to -17C)).
(1) Notify unit maintenance to drain and fill the engine with appropriate lubricating oil for cold weather.
(2) Notify unit maintenance to drain and fill the fuel tank with appropriate fuel for cold weather.
(3) Before placing the toggle switch (START/RUN, OFF, GLOWPLUG) (7, fig. 2-4) handle in the
START/RUN position, place and hold in the GLOWPLUG position for 30 seconds.
2-30
