(3) Keep the protective cap on the IR
window when the viewer is not in actual oper-
ation.
(4) Dampen a lens tissue with fresh water
to remove salt water residue, then follow the
procedure given in paragraph
(5) Wet a cloth with fresh water, and
wipe all exterior surfaces free of salt water
residue. Dry thoroughly with a dry, lint-free
cloth.
2-19
