USING THE AIR MASK
the FireHawk M7 Power Module reaches a low battery
condition, a double flash of the yellow LED will be dis-
played in the FireHawk M7 Responder HUD. If both
the FireHawk M7 Responder HUD and FireHawk M7
Power Module have reached a low battery condition,
the FireHawk M7 Responder HUD will display an alter-
nating single and double flash of the yellow LED. If
this condition exists, return to fresh air, and replace
the batteries immediately. See Replacing Batteries in
the FireHawk M7 Responder HUD.
7. The FireHawk M7 Responder HUD will flash a single
green LED every 15 seconds when the air mask is
pressurized.
Refer to Chart 1 for a full description of all FireHawk M7
Responder HUD LED patterns.
Replacing the Batteries in the FireHawk M7
Responder HUD
Replace the batteries in the FireHawk M7 Responder
HUD when the low battery LED flashes. Use only rec-
ommended battery types. Change the batteries in a
non-hazardous area only. Failure to follow this warn-
ing can result in serious personal injury or death.
1. Unthread the battery cap (counter-clockwise) on the
FireHawk M7 Responder HUD battery tube.
2. Remove the battery cartridge from the FireHawk M7
Responder HUD.
3. Remove the batteries and discard.
3. Inspect the battery cartridge for signs of damage such
as corrosion on the battery terminals or cracks in the
cartridge. If the battery cartridge is damaged, replace
the cartridge immediately.
4. Insert three AAA alkaline batteries in the appropriate
locations on the cartridge. Follow the notations on the
cartridge to ensure proper battery orientation.
Use only Duracell MN2400, Energizer E92, or Eveready
A92 AAA alkaline batteries in the FireHawk M7
Responder HUD. Use of other batteries, or a combina-
tion of batteries from different manufacturers, will
affect the performance of unit and void the Intrinsic
Safety Approval.
5. Insert the battery cartridge into the battery tube on the
FireHawk M7 Responder HUD.
6. Before installing the battery cap, verify that the o-ring is
in place and free of damage and debris. If the o-ring is
missing or damaged, replace battery cap. Failure to do
so may allow moisture or contaminants into the battery
tube and cause the device to not function properly.
7. Thread the battery cap on to the battery tube of the
FireHawk M7 Responder HUD (clockwise). Hand-tight-
en cap until snug. Do not over-tighten battery cap.
24
TAL 803 (L) Rev. 1 - 10086011
R
G
G
G
Y
G
G
G
G
Y
76% to 100%
Full Cylinder, 4 Green LED
20 Sec. Steadily ON
1 green LED will flash every 15 seconds during use until 75%
75% to 51%
3/4 Full Cylinder, 3 Green LED
20 Sec. Steadily ON
1 green LED will flash every 15 seconds during use until 50%
26% to 50%
1/2 Full Cylinder, 2 Yellow LED
30 Sec. Flashing ON/OFF
1 green LED will flash every 15 seconds during use until 25%
25% to 0%
1/4 Full Cylinder, 1 Red LED
Flashing Continuously
Yellow LED, Low Battery LED
Single Flash - M7 HUD
Double Flash - FireHawk M7 Power Module
Alternating Single/Double Flash -
Both FireHawk M7 Responder HUD and
FireHawk M7 Power Module
Y
R
O
Orange LED
for PASS Pre-Alarm
Red/Orange LED for Evacution Signal
Alternating Red/Orange
(FireHawk M7 Telemetry Module)
Chart 1: FireHawk M7 Responder HUD LED Patterns
Summary of Contents for FireHawk M7 Responder
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