MSA FireHawk M7XT Fonctionnement/Entretien page 22

Turning ON the Continuous Pressure Display Mode for the
FireHawk M7 HUD or I-HUD
In Continuous Pressure Display Mode, the life of the batter-
ies in the FireHawk M7 HUD or I-HUD will be shortened.
NOTE: The Continuous Pressure Display Mode can only be
activated when the system is pressurized.
1. Push the mode button (green) on the FireHawk M7XT
Control Module and hold the button in for 3 seconds or
until the FireHawk M7XT Power Module sounds a single
beep. The LEDs will appear in the FireHawk M7 HUD or
I-HUD.
2. The FireHawk M7 HUD or I-HUD will continuously show
the cylinder pressure.
Turning OFF the Continuous Pressure Display Mode for the
FireHawk M7 HUD or I-HUD
NOTE: The Continuous Pressure Display Mode will deactivate if
low battery in the FireHawk M7 HUD or I-HUD is reached.
1. With the FireHawk M7 HUD or I-HUD in Continuous
Pressure Display Mode, push the mode button (green) on
the FireHawk M7XT Control Module and hold the button in
for 3 seconds or until the FireHawk M7XT Power Module
sounds a single beep.
2. The FireHawk M7 HUD or I-HUD will revert to default mode
showing only cylinder pressure status at 100%, 75%, 50%,
and 33% increment of full cylinder pressure.
LOW BATTERY WARNINGS
Replace the batteries in the FireHawk M7XT Power Module
when the low battery warning sounds. Use only recom-
mended battery types. Change the batteries in a non-haz-
ardous area only. Misuse can result in serious injury or
death.
NOTE: There are unique low battery warnings for the FireHawk
M7 HUD or I-HUD and the FireHawk M7XT Power Module which
are each displayed by the FireHawk M7 HUD or I-HUD and on
the FireHawk M7XT Control Module display.
1. If there is a low battery in the FireHawk M7 HUD or I-HUD,
one yellow LED will flash in the FireHawk M7 HUD or I-
HUD.
2. If there is a low battery in the FireHawk M7XT Power
Module a double flash of the yellow LED will be displayed.
3. If there are low batteries in the FireHawk M7 HUD or I-HUD
and FireHawk M7XT Power Module the yellow LED
FireHawk M7 HUD or I-HUD will alternate single and
double flashes of the yellow LED.
MSA 314 (L) Rev. 2 - 10128861
USING THE AIR MASK
CAUTION
WARNING
Replacing the Batteries in the FireHawk M7XT Power Module
(integrated PASS version)
DO NOT dispose of the batteries in fire. They may explode.
Misuse can result in serious injury or death.
Use only Rayovac 814 or AL-C (Regular/Max or Ultrapro),
Duracell MN1400, or Duracell Procell PC1400 alkaline batter-
ies in the FireHawk M7XT Power Module. Use of other batter-
ies, or a combination of batteries from different manufactur-
ers, will affect the performance of unit and void the Intrinsic
Safety Approval.
1. Unthread the battery cap on the FireHawk M7XT Power
Module by rotating the battery cap in the counter-clock-
wise direction.
2. Remove the four C batteries from the battery tube of the
FireHawk M7XT 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 M7XT Power
Module battery tube. Tighten the battery cap by rotating it
clockwise until it is fully seated, using the flat from the
waist belt buckle. Failure to fully seat the battery cap may
prevent the battery tube from being water tight.
6. Dispose of, or recycle batteries, in accordance with all
applicable federal, state, and local regulations.
Turning OFF the FireHawk M7XT Control Module after
Doffing the Air Mask
Turn the FireHawk M7XT Control Module off after doffing air
mask; otherwise, batteries will be drained. The FireHawk
M7XT Control Module does not shut off automatically.
1. Upon returning to fresh air, close the cylinder valve
completely and release all pressure from the air mask.
2. When the pressure falls below 250 psi, turn the FireHawk
M7XT Control Module off by pressing the reset button
(yellow) two times within approximately one second.
a. The FireHawk M7XT Power Module will beep once when
the reset button is pressed once. Pressing the reset button
a second time will then sound three short tones to indi-
cate that the unit is turned off. The lights on the FireHawk
M7XT Control Module and FireHawk M7XT Power Module
will stop flashing.
22
WARNING
WARNING
WARNING