1.Insitu Testing
Press and hold the “PRESS TO TEST”
button on the regulator. While pressing
the buttons:
• The blinker must turn yellow,
indicating that oxygen is flowing.
• Check for oxygen noise in your
communication
headset.
It
indicates that the microphone is
operating correctly.
Before each flight, check that the system is operating properly.
Press
the
“PRESS
TO
TEST”
button on the regulator.
Oxygen flow must be heard.
1.1
1.2. Cup
1.2. Box
After
the
test,
the
blinker
must
stay
black. If it stays yellow,
check for leakage in
the system.
4NUT0577 issue 3
Press
and
hold
the
“PRESS
TO
TEST
AND RESET” button on
the stowage box.
After
1
second
the
blinker must turn black. It
indicates that there is no
leakage in the system.
1.2. Cup with ON/OFF valve
• Slightly remove the mask from its
cup.
• While holding the mask, press the
“PRESS TO TEST” button on the
regulator. Oxygen flow must be
heard.
Push the mask
in its cup until it
clicks locked
