TM 11-5855-250-12&P
b. Be sure that the cowling gasket is in good
the possibility of damage by moisture by taking
precautions as follows:
condition and the cowling latches have been properly
a. Keep the searchlight, cables, and connectors
adjusted. A properly adjusted cowling latch requires
clean and dry.
from 8 to 12 pounds of pull at the extreme end of the
b. Properly tighten all electrical connectors.
cowling latch lever to release it from the closed position.
c. Be sure that the cowling gasket is in good
Notify higher category of maintenance if the cowling
latches require adjustment.
condition and the cowling latches have been properly
c. Water will flow into the heat exchanger
assembly, through the open intake and exhaust ports,
from entering the searchlight subassembly.
d. Inspect the blower inlet and outlet screens and
without damaging the searchlight.
d. The mounted searchlights are not designed to
remove any obstructions.
e. Cover the searchlight when it is not in operation.
be forded through deep waters. Damage to the mount
will occur.
3-11. Operation In Desert Climates
3-9. Operation in Arctic Climates
Heat, dust, and sand are primary problems in desert
Subzero temperatures and conditions associated with
areas; therefore, prevent the possibility of damage by
cold weather affect the efficient use of the searchlight.
taking precautions as follows:
Instructions for operation of the searchlight under these
a. Keep the equipment clean.
adverse conditions are as follows:
b. Be sure that the cowling gasket is in good
a. Before operating the searchlight, inspect the
condition. Make sure that the cowling latches have been
exterior surfaces and remove any accumulations of ice
properly adjusted (para 3-8) to prevent dust and sand
or snow, especially around the cowling glass and blower
from entering the searchlight subassemblies.
inlet and outlet screens.
c. Perform a daily inspection of the heat exchanger
b. During long periods of operation, inspect the
assembly blower intake and exhaust ports for an
blower inlet and outlet screens and remove any
accumulation of dirt, dust, and sand. Accumulated dirt
accumulations of ice or snow.
can be flushed from the heat exchanger assembly by
c. Cover the searchlight when it is not in operation.
pouring water into the blower intake port. The heat
exchanger assembly is sealed and will prevent water
from entering the searchlight subassemblies.
3-10. Operation In Tropical Climates
In the tropics, moisture and humidity can cause severe
on the equipment occurs frequently; therefore, minimize
3-5