MSA FireHawk M7XT Fonctionnement/Entretien page 20

FUNCTIONAL TESTS
NOTE: Refer to the Visual Inspection and Functional Test sec-
tion of this manual.
Always test the FireHawk M7 HUD or I-HUD and the entire air
mask to be sure that the system 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.
FIREHAWK M7XT CONTROL MODULE FUNCTIONALITY
• The FireHawk M7XT Control Module is assembled to the
gauge line hose and is connected to the FireHawk M7XT
Power Module by the power cable. The FireHawk M7XT
Control Module serves as the user interface with the air
mask and it also serves as the wireless transmitter for the
FireHawk M7 HUD or I-HUD.
• The FireHawk M7XT Control Module has three control but-
tons.
o The RESET/OFF button (yellow) on the side of the
FireHawk M7XT Control Module resets the PASS device
from the full alarm mode. It also shuts the unit off after
the cylinder valve has been closed and all pressure is bled
from the system. When the optional FireHawk M7XT
Telemetry Module is used, the Reset button allows the
user to confirm an evacuation command.
o The center lighted ALARM button (green/red) activates
the full PASS alarm with or without air pressure.
o The top MODE button (green) will refresh the display in
the FireHawk M7 HUD or I-HUD, activate the backlight
on the display of the FireHawk M7XT Control Module,
set the FireHawk M7 HUD or I-HUD to continuous dis-
play mode, and toggle the FireHawk M7XT Control
Module digital display mode between pressure remain-
ing and calculated service time remaining. When the
FireHawk M7XT Control Module is OFF, the mode button
(green) can be used to scan an ID Tag into the unit
(when optional FireHawk M7XT Telemetry Module is
used).
• The FireHawk M7XT Control Module turns on automatical-
ly when the user opens the air mask cylinder valve. As the
system pressure reaches approximately 250 psi, both visi-
ble and audible alarms activate automatically, indicating
that the unit is functional (audible alarms are emitted from
the FireHawk M7XT Power Module located on the back-
plate). The unit remains in monitor mode until the user
closes the cylinder valve, purges the system pressure, and
presses the reset button (yellow) on the side of the
FireHawk M7XT Control Module two times within approxi-
mately one second.
• While the air mask is in use, if the user is motionless for
approximately 20 seconds, the PASS (FireHawk M7XT
Control Module and FireHawk M7XT Power Module) enters
pre-alarm with audible and visual alerts as indicated in Chart
1 (FireHawk M7 HUD), Chart 2 (FireHawk M7 I-HUD), and
MSA 314 (L) Rev. 2 - 10128861
USING THE AIR MASK
Chart 3 (FireHawk M7XT Power and Control Modules).
Movement of the FireHawk M7XT Control Module cancels
the PASS pre-alarm.
• If the user remains motionless for 30 seconds (approxi-
mately), the PASS enters full alarm.
• The PASS can be set into full alarm at any time (even with-
out air pressure) by pressing and holding the alarm button
on the FireHawk M7XT Control Module.
• The PASS function uses red and green LEDs behind the
alarm button of the FireHawk M7XT Control Module and
buddy lights on the FireHawk M7XT Power Module to dis-
play its status visually:
o Green LEDs start to flash when the cylinder valve is
opened and shows that the device is operational.
o Red LEDs flash slowly when the device is in PASS pre-
alarm and flash rapidly when the device is in full PASS
alarm.
o Red LEDs flash when the cylinder pressure is at or below
33% of the rated service pressure.
• The four C alkaline batteries in the FireHawk M7XT Power
Module supply the FireHawk M7XT Control Module with
power. The system notifies the user when the batteries
need to be replaced by emitting an audible beep (1 beep
every 5 seconds) from the FireHawk M7XT Power Module,
displaying and empty battery icon on the display of the
FireHawk M7XT Control Module, and by a double flashing
yellow LED on the FireHawk M7 HUD or I-HUD.
• The FireHawk M7XT Control Module has a data logging
feature that records information about the air mask while
the FireHawk M7XT Control Module is turned on. This data
log memory can be accessed using the FireHawk M7
Reader / Tag Writer Interface Module.
• The FireHawk M7 Reader / Tag Writer Interface Module
contains an internal real time clock. This clock can be reset
using the FireHawk M7XT Control Module. By default, the
internal clock is set to Eastern Standard Time.
Before placing the FireHawk M7XT Air Mask in service, verify
that the internal clock is set to the appropriate time as per
the user's geographic location. Failure to do so can result in
inaccurate data logging of the FireHawk M7XT Control
Module.
The time may be viewed or changed using the FireHawk M7
Reader / Tag Writer Interface Module. For additional instruc-
tions on using the FireHawk M7 Reader / Tag Writer Interface
Module refer to the interface module instructions (P/N
10088977).
20
WARNING