MSA G1 Operating Manual page 28

(1) Pressurize the system by opening the cylinder valve.
Observe the starting sequence of the LEDs on the regulator.

Listen for the power module to sound and for the primary low pressure warning alarm to sound

briefly.
Ensure that the buddy lights are flashing green.

Ensure the pressure gauge and LCD display (if configured) show the correct pressure.

(2) Allow the control module to remain motionless for approximately 20 seconds.
Listen for the power module to sound repeated tones of the PASS pre-alarm.

Verify that the buddy lights are flashing red.

Verify that the red LED is flashing in the HUD.

(3) Shake the control module to reset the alarm before the unit goes into full alarm.
(4) Allow the control module to remain motionless until the full alarm sounds (30 seconds).
Listen for the power module to sound the tones of the PASS full alarm.

Verify that the buddy lights are flashing red.

Verify that the red LED is displayed in the HUD.

Verify that shaking the control module does not reset the full alarm.

(5) Reset the PASS alarm by pressing the left reset button (green) on the side of the control module
twice within approximately one second.
(6) To check the manual activation of the PASS alarm, press and hold the alarm button on the front
of the control module until the alarm activates.
Listen for the power module to sound the tones of the PASS full alarm.

Verify that the buddy lights are flashing red.

Verify that the red LED is displayed in the HUD.

(7) Reset the PASS alarm by pressing the right reset button (green) on the side of the control module
two times within approximately one second.
(8) Close the cylinder valve fully.
(9) Slowly open the bypass valve/keep purge pressed on the regulator to vent the pressure until the
control module pressure reading drops below the following values:
775 psi - approximately (2216 psi system)

1575 psi - approximately (4500 psi system)

A flashing red LED must display in HUD at the appropriate pressure. The primary low pressure
warning device should be alarming, all of the buddy lights should be flashing red, and the pneumatic
light should illuminate.
The alarms should continue until the air pressure is 200 psi or less.
(10) When the system pressure falls below 200 psi, turn the control module off (sleep mode) by
pressing the reset button (green) two times within approximately one second.
(11) Open the bypass valve slowly/keep purge pressed to release any remaining pressure in the
system.
(12) Close the bypass valve/release purge.
G1
Functional Tests
28
US