TM 3-4240-280-10
TM 3-4240-280-10
TM 3-4240-280-10
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Section IV. OPERATION UNDER UNUSUAL CONDITIONS<br />
2-20. USING MASK IN COLD WEATHER.<br />
WARNING<br />
Keep mask dry. Moisture could clog the canister and make it useless. Moisture<br />
could also short microphone connectors, which could cause a loss of communication<br />
in the tank or aircraft.<br />
a. General Instructions You Must Follow in Cold Weather.<br />
(1) During time between repeated uses, remove your facepiece from carrier and shake or<br />
flex facepiece to remove ice and snow.<br />
(2)<br />
(3)<br />
(4)<br />
(5)<br />
(6)<br />
CAUTION<br />
Do not warm up facepiece near a heater or open flame.<br />
Warm facepiece whenever you can.<br />
In a warm indoor area, dry facepiece with a clean cloth. Carefully dry outlet and<br />
nosecup valves.<br />
Before entering subzero temperatures, install winterization kit (para 2-19).<br />
Before entering a warm area from subzero temperatures, remove frost and snow<br />
from facepiece.<br />
Use antifogging kit to reduce fogging of lens.<br />
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