User's Manual

SYSTEM OPERATIONS
NIGHTFIGHTER HEADS-UP DISPLAY SYSTEM FUNC-
TIONALITY
• The NightFighter Heads-Up Display System allows a
user to clearly and easily see air cylinder pressure
while wearing an SCBA equipped with the
N
ightFighter Receiver and ICM Tx Unit or Nightfighter
t
ransmitter, and the Ultra Elite Facepiece.
•
The NightFighter Heads-Up Display System Receiver
is also a multi-mode, battery-powered, low-pressure
warning device which gives visible warning that air
cylinder pressure has reached approximately 25% of
rated cylinder pressure remaining. The receiver will
display one flashing red LED when this point has been
reached.
• The NightFighter Heads-Up Display System Receiver
has a photo sensor for the LED lights to automatically
adjust the brightness of the LEDs based on the light
level outside of the facepiece.
• The NightFighter Heads-Up Display System Receiver will
indicate a low battery by a flashing yellow LED light
for the receiver and ICM Tx Unit or Transmitter. See
the During Use section for Low Battery Warnings.
• The NightFighter Heads-Up Display System Receiver
operates using two standard AA alkaline batteries and
notifies the user when the batteries need to be
replaced.
Nightfighter Heads-UP Display System Receiver
Display:
• The ICM Tx Unit or Nightfighter transmitter sends a
signal to the NightFighter receiver (on the facepiece),
which displays the air cylinder pressure in one quarter
cylinder increments, by an LED light pattern. See
chart 1.
Assembly of Receiver to Facepiece Bracket
With the facepiece laying on its side:
1
. Turn receiver so the thumbscrew is at the bottom of
r
eceiver and MSA logo of the receiver is to the right.
2
. Align the receiver's two slots with the bracket's guide
rails.
3. Slide receiver's slots onto bracket guide rail.
Thumbscrew of receiver should align with thumbscrew
hole in bracket.
4. Thread thumbscrew into bracket finger-tight.
Functional Tests
Always test the NightFighter Heads-Up Display
System Receiver and ICM Tx Unit to be sure the sys-
tem operates properly before entering any hazardous
atmosphere. Do NOT use this device unless it passes
all inspection and functional tests. Failure to follow
this warning can result in serious personal injury or
death.
NightFighter Receiver and ICM Tx Unit or Transmitter
must be within approximately 12 to 15 inches of each
other for the Receiver's LED lights to work properly.
5
T
AL 507 (L) Rev. 1 - 10058881
R
G
G
G
Y
G
G
G
G
Y
76% to 100%
Full Cylinder, 4 Green LED
20 Sec. Steadily ON
75% to 51%
3/4 Full Cylinder, 3 Green LED
20 Sec. Steadily ON
26.1% to 50%
1/2 Full Cylinder, 2 Yellow LED
30 Sec. Flashing ON/OFF
25% to 0%
1/4 Full Cylinder, 1 Red LED
Flashing Continuously
Yellow Light
Low Battery LED for
Receiver/Transmitter
Orange Light
Pre-Alarm for
ICM Tx Unit
Y
O
NOT USED
Chart 1: NightFighter Heads-Up Display System Receiver Cylinder Pressure LED Pattern
CAUTION