MSA FireHawk M7XT Fonctionnement/Entretien page 16

4. When an evacuation command has been sent to the user
(if the optional FireHawk M7XT Telemetry Module is in
use), the FireHawk M7 HUD or I-HUD will display an alter-
nating red and orange LED until the evacuation has been
confirmed.
5. The FireHawk M7 HUD or I-HUD has a photo sensor that
automatically adjusts the brightness of the LEDs based on
the intensity of the ambient light measured outside of the
facepiece.
6. The FireHawk M7 HUD or I-HUD indicates a low battery
condition in either the HUD or FireHawk M7XT Power
Module by a flashing yellow LED. A user can confirm the
power module low battery indicator by viewing the low
battery indicator on the control module display. If this con-
dition exists, return to fresh air, and replace the batteries
immediately. See Replacing Batteries in the FireHawk M7
HUD or I-HUD.
MSA 314 (L) Rev. 2 - 10128861
USING THE AIR MASK
Chart 1: FireHawk M7 HUD LED Patterns for FireHawk M7xT Air Masks
Refer to Chart 1 for a full description of all FireHawk M7 HUD
LED patterns.
Refer to Chart 2 for a full description of all FireHawk M7 I-HUD
LED patterns.
Full Cylinder, 4 Green LED
3/4 Full Cylinder, 3 Green LED
1/2 Full Cylinder, 2 Yellow LED
30 Sec. Flashing ON/OFF
1/4 Full Cylinder, 1 Red LED
Flashing Continuously
Yellow LED, Low Battery HUD
and/or HUD Transmitter
Orange LED for PASS Pre-Alarm
Red/Orange LED for Evacuation Signal
16
100% to 76%
20 Sec. Steadily ON
75% to 51%
20 Sec. Steadily ON
50% to 34%
33% to 0%
Flashing Continuously
(integrated PASS)
Alternating Red/Orange
(telemetry module)