TM 3-4240-334-20&P

TM 3-4240-334-20&P
2-8.
4.
5.
6.
MASK ASSEMBLY FUNCTIONAL TEST (CONT).
While operator is looking straight ahead, move applicator around outlet valve (1), voicemitter (2), inlet
valve (3), and lenses.
Move applicator along the length of the hose (4), around the canister disconnect (5), canisters (6), and
the blower assembly (7).
If soldier can smell n-amyl acetate, replace canisters and battery and retest.
NOTE
You should wait at least 30 minutes before retests.
7.
8.
9.
If soldier smells n-amyl acetate, perform procedures in table 2-3 and retest.
If soldier can still smell n-amyl acetate, replace mask.
If soldier cannot smell n-amyl acetate (banana oil), have him remove facepiece and smell the applicator
to be sure his sense of smell is not impaired.
NOTE
If the soldier’s sense of smell is impaired, the facepiece must be tested in a CS
(irritant) chamber or using a smoke tube (Item 21, App D) and an aspirator bulb
(Item 3, App D) which produces an irritating acid smoke. Read and follow directions
on the kit. The smoke tube test should be conducted in still air in an area
that can be ventilated.
2-14