TM 3-4240-280-10
TM 3-4240-280-10
TM 3-4240-280-10
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2-7. GENERAL.<br />
Section III. OPERATION UNDER USUAL CONDITIONS<br />
<strong>TM</strong> 3-<strong>4240</strong>-<strong>280</strong>-<strong>10</strong><br />
WARNING<br />
Do not expose your facepiece to temperatures above 120”F (48.89” C). If facepieca<br />
is exposed to temperatures above 120”F (48.89’’C), allow lens to cool<br />
below this temperature before flexing lens or stowing facepiece in carrier or lens<br />
may crack and leak.<br />
This section contains operator’s instructions to put on and use the mask and additionally authorized<br />
items under normal conditions. For operation under unusual conditions, see paragraph 2-20.<br />
2-8. PUTTING ON YOUR FACEPIECE FOR FIT AND LEAK CHECK.<br />
NOTE<br />
A trained unit NBC NCO will supervise size selection and initial fitting of your<br />
facepiec-e. However, it’s your responsibility to make sure your facepiece fits<br />
properly, has a good seal, and is as comfortable as possible.<br />
2-65
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