MSA G1 SCBA Operating Manual page 59

(4) Turn the regulator bypass knob counterclockwise to open
the regulator bypass valve, or if equipped, push the purge
button, to release all pressure from the SCBA.
(5) Turn the regulator bypass knob clockwise to close the regu-
lator bypass valve.
(6) When the pressure decreases below 200 psi, double-push
the green RESET button to turn the control module off.
NOTE:
The HUD and speaker module (if equipped) automatically
turn off within 60 seconds after the SCBA is depressurized. A red
LED flashes until the HUD goes off.
(7) Put the regulator in the regulator retainer when it is not in
use.
(8) To remove the carrier and harness, push in on the release
button on the waist belt buckle.
(9) Disconnect the chest strap buckle (if used).
G1 SCBA 2018 Edition
After Use
US
59