VISUAL INSPECTION AND FUNCTIONAL TESTS
Control Module two times within approximately
o
ne second.
7. To check the manual activation of the PASS
a
larm, press and hold the alarm button on the
front of the FireHawk M7 Control Module for
approximately three seconds. Listen for the
PASS alarm to be emitted from the FireHawk
M7 Power Module.
8
. Reset the PASS alarm. Press the reset button
(yellow) on the FireHawk M7 Control Module
two times within approximately one second.
9. Allow the FireHawk M7 Control Module to
remain motionless until the PASS pre-alarm
sounds. Shake the FireHawk M7 Control
Module to reset the alarm.
10. Disconnect the Firehawk Regulator from the
facepiece.
11. Close the cylinder valve fully.
12. Slowly crack the bypass valve on the Firehawk
Regulator to bleed off pressure until the
FireHawk M7 Control Module pressure reading
drops below the following values:
o 530 psi - approximately (2216 psi system)
o 750 psi - approximately (3000 psi system)
o 1050 psi - approximately (4500 psi system)
A flashing red LED must display in the FireHawk M7 HUD
or I-HUD at the appropriate pressure listed above. The
Audi-Larm Alarm will ring and the alarm button on the
FireHawk M7 Control Module and buddy lights on the
FireHawk M7 Power Module will flash red at this time.
13. The alarms should continue until the air pres-
sure is 200 psi or less. If the Audi-Larm Alarm,
FireHawk M7 Control Module, FireHawk M7
Power Module, or FireHawk M7 HUD or I-HUD
does not function properly, the air mask must
be removed from service.
14. When the system pressure falls below 200 psi,
turn the FireHawk M7 Control Module off (sleep
mode) by pressing the reset button (yellow) two
times within approximately one second.
15. Open the bypass valve slowly to release any
remaining pressure in the system. Close the
bypass valve.
b. Air masks without integrated PASS
1. Verify proper function of the FireHawk M7 HUD
or I-HUD, NightFighter HUD Transmitter, and
Audi-Larm Alarm by observing the analog pres-
sure gauge when the alarm rings. Perform this
test with a minimum cylinder pressure of 1200
psi for 2216 psi air masks, 1800 psi for 3000 psi
air masks, and 2000 psi for 4500 psi air masks.
2. Pressurize the system by opening the cylinder
v
alve. Listen for the Audi-Larm Alarm to ring
briefly.
3
. Observe the LED display of the FireHawk M7
HUD or I-HUD. The LEDs must illuminate and
correspond to the system pressure.
4. Disconnect the Firehawk Regulator from the
facepiece.
5
. Close the cylinder valve fully.
6. Slowly crack the bypass valve on the Firehawk
Regulator to bleed off pressure until the pres-
sure reading drops below the following values:
o 530 psi - approximately (2216 psi system)
o 750 psi - approximately (3000 psi system)
o 1050 psi - approximately (4500 psi system)
A flashing red LED must display in the FireHawk M7 HUD
or I-HUD at the appropriate pressure listed above. The
Audi-Larm Alarm will ring and should continue until the air
pressure is 200 psi or less. If the Audi-Larm Alarm,
FireHawk M7 HUD or I-HUD, or NightFighter HUD
Transmitter does not function properly, the air mask must
be removed from service.
7. Open the bypass valve slowly to release any
remaining pressure in the system. Close the
bypass valve.
DO NOT disconnect the Audi-Larm Alarm coupling nut
when pressure is shown on analog pressure gauge.
Release all pressure from the air mask by opening the
Firehawk Regulator bypass valve. Removing the cou-
pling nut with the air mask is pressurized can result in
serious personal injury, death, or damage to equip-
ment.
Quick-Fill and URC Coupling Inspection
Inspect the URC and Quick-Fill coupling for tightness of
the coupling halves and tightness of the coupling to the
air mask. Perform both inspections simultaneously.
1. Close the cylinder valve and relieve system pressure.
(See DISCONNECTING THE FIREHAWK PUSH-TO-
CONNECT REGULATOR or DISCONNECTING THE
SLIDE-TO-CONNECT FIREHAWK REGULATOR for
instructions).
2. Use a fine-tip ink marker and a ruler or straight edge
to draw a line on the male coupling. Make sure the
line extends across the joint and coupling hex flats
onto the Audi-Larm or Quick-Fill manifold body.
12
TAL 1705 (L) Rev. 18 - 10082858
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