TM 11-5855-217-12
f. Properly tighten all electrical connectors.
3-11. Operation in Arctic Climates
(figs. 1-2 and 1-3)
g. Cover the searchlight when it is not in op-
Subzero temperatures and climatic conditions as-
eration.
sociated with the cold weather affect efficient use
of the equipment. Instructions and precautions
3-13. Operation in Desert Climates
for operations under such adverse conditions are
(figs. 1-2 and 1-3)
as follows:
Heat and dusty or sandy conditions are primary
a. Frequently inspect the exterior of the search-
problems in desert areas. To minimize the possi-
light and remove any accumulations of ice or
bility of damage by heat, dust, or sand, take the
snow, particularly around the window and the air
following precautions:
intake and exhaust ducts.
a. Remove the window or heat exchanger only
b. Inspect the power cable, window clamp, and
when absolutely necessary,
window for possible damage. Report defects to
b. Cover the searchlight with the canvas cover
higher category of maintenance.
when the searchlight is not in operation. If pos-
c. Cover the searchlight when it is not in op-
sible, locate the searchlight in a sheltered area.
eration.
Take advantage of any natural barrier which may
offer protection from blowing dust.
c. Inspect the heat exchanger air intake and
(figs. 1-2 and 1-3)
exhaust ducts. Flush the duct openings with water
When operated in tropical climates, moisture and
to remove any obstructions.
humid conditions can cause problems with the
d. Keep the equipment clean.
searchlight. These conditions are particularly
severe when the searchlight set is operated in
swampy areas. Condensation of moisture on the
3-14. Operation Under Salt Water Spray
equipment occurs frequently. To minimize the
Environments
possibility of damage by moisture, take the fol-
Instructions and precautions for operation under
lowing precautions:
salt water spray conditions are as follows:
a. Keep the equipment dry and clean.
a. Protect the searchlight from salt water spray.
b. Check all exterior parts frequently for evi-
Wash it down regularly with fresh water and
dence of corrosion and fungus formation.
wipe dry with a clean, lint free cloth.
c. Inspect the heat exchanger air intake and
b. If permanent shelter is not available, pro-
exhaust ducts and remove any obstructions.
tect the searchlight with the canvas cover when
it is not in operation. Remove the cover during
d. Inspect the heat exchanger and window for
dry periods and allow the searchlight to dry out.
a tight fit..
e. Inspect the front panels on the remote con-
c. Inspect all painted surfaces for cracked,
trol box and control box for evidence of corrosion
peeled, or blistered paint, and report. discrep-
or fungus formation.
ancies to higher category of maintenance.
