User's Manual
USING THE AIR MASK
The FireHawk M7 Control Module has the ability to
display calculated remaining service time counting
down to 0 psi (default) or 25% of the rated service
pressure. The user must determine which option has
b
een selected for the FireHawk M7 Control Module in
service. Failure to follow this warning can result in
serious personal injury or death.
Actual time remaining may be less than the calculated
time displayed. Increases in breathing rate may reduce
remaining time more than expected. Use time indica-
tor as general guide only. The time displayed is based
on the continuation of the average breathing rate over
the last three minutes. Increases in the breathing rate
after checking the displayed time may result in less
remaining time than anticipated. Failure to follow this
warning can result in serious personal injury or death.
Turning ON the Continuous Pressure Display Mode for
the FireHawk M7 HUD
In Continuous Pressure Display Mode, the life of the
batteries in the FireHawk M7 HUD will be shortened.
Note: The Continuous Pressure Display Mode can only be
activated when the system is pressurized.
1. Push the top mode button (green) on the FireHawk M7
Control Module and hold the button in for 3 seconds
or until the FireHawk M7 Power Module sounds a sin-
gle beep. The LEDs will appear in the FireHawk M7
HUD.
2. The FireHawk M7 HUD will continuously show the
cylinder pressure.
Turning OFF the Continuous Pressure Display Mode
for the FireHawk M7 HUD
Note: The Continuous Pressure Display Mode will deacti-
vate if low battery in the FireHawk M7 HUD is reached.
1. With the FireHawk M7 HUD in Continuous Pressure
Display Mode, push the mode button (green) on the
FireHawk M7 Control Module and hold the button in
for 3 seconds or until the FireHawk M7 Power
Modules sounds a single beep.
2. The FireHawk M7 HUD will revert to default mode
showing only cylinder pressure status at each 25%
increment of full cylinder pressure.
Low Battery Warnings
Replace the batteries in the FireHawk M7 Power
Module when the low battery warning sounds. Use
only recommended battery types. Change the batter-
ies in a non-hazardous area only. Failure to follow this
w
arning can result in serious personal injury or death.
Note: There are unique low battery warnings for the
FireHawk M7 HUD and the FireHawk M7 Power Module
which are each displayed by the FireHawk M7 HUD and
on the FireHawk M7 Control Module display.
1. If there is a low battery in the FireHawk M7 HUD, one
yellow LED will flash in the FireHawk M7 HUD.
2. If there is a low battery in the FireHawk M7 Power
Module, a double flash of the yellow LED will be dis-
played.
3. If there are low batteries in the FireHawk M7 HUD and
FireHawk M7 Power Module, the yellow LED FireHawk
M7 HUD will alternate single and double flashes of the
yellow LED.
Replacing the Batteries in the FireHawk M7 Power
Module
DO NOT dispose of the batteries in fire. They may
explode. Failure to follow this warning can result in
serious personal injury or death.
Use only Rayovac 814 LR14, Rayovac Ultrapro LR14,
Energizer E93, Energizer Industrial EN93, Duracell
MN1400, or Duracell Procell MN4100 alkaline batteries
in the FireHawk M7 Power Module. Use of other bat-
teries, or a combination of batteries from different
manufacturers, will affect the performance of unit and
void the Intrinsic Safety Approval.
1. Unthread the battery cap on the FireHawk M7 Power
Module by rotating the battery cap in the counter-
clockwise direction.
2. Remove the four C batteries from the battery tube of
the FireHawk M7 Power Module.
3. Insert the four C batteries following the diagrams
inside the battery tube.
4. Verify that the o-ring on the battery cap is held in
place, free of damage and debris, and not twisted in
the gasket retention groove in the battery cap.
5. Install the battery cap on the FireHawk M7 Power
Module battery tube. Tighten the battery cap by rotat-
ing it clockwise until it is snug. Failure to fully install
the battery cap may prevent the battery tube from
being water tight.
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