User's Manual

10. Stand motionless until the pre-alarm sounds. Shake
unit to reset the alarm.
11. If the ICM Tx Unit passes these functional checks,
complete all remaining SCBA donning steps in the
SCBA user’s instruction manual.
12. Disconnect the second stage regulator from the face-
p
iece.
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3. Close the cylinder valve fully.
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4. At the appropriate pressure, the NightFighter Receiver
should display one blinking red LED and the Audi-
Larm should sound. Crack the bypass valve slowly to
bleed off pressure until the ICM Tx Unit pressure read-
ing drops below the following values:
a. 530psig - approximately (2216psi system),
b. 750psig - approximately (3000psi System),
c. 1050psig - approximately (4500psi system)
A single flashing RED LED should be displayed in the
Nightfighter Heads-Up Display System Receiver at the
a
ppropriate pressure listed above.
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5. When the pressure falls below 200psig, turn the ICM
Tx Unit off (Sleep Mode) by pressing the reset button
2 times in rapid succession.
USING THE ICM TX UNIT
11
T
AL 507 (L) Rev. 1 - 10058881