DONNING
3. Inhale sharply to start the airflow.
4
. Check the bypass again by turning the red knob
counter-clockwise until increased air flow is felt. Close
t
he bypass.
There must be a continuous flow of air when the
b
ypass knob is opened. If not, do not use the air
mask. The air mask must be checked and the condi-
tion corrected by an MSA trained or certified repair-
person before it can be used. Failure to follow this
warning can result in serious personal injury or death.
Note: If the air mask passes all tests, it is ready for use.
These tests must be performed every time before entering
a hazardous atmosphere. If the air mask fails to meet any
of the tests, the condition(s) must be corrected before
using the air mask.
22
TAL 803 (L) Rev. 1 - 10086011
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