Check Function Of The Control Module, Power Module, Hud And Primary Low Pressure Warning Device - MSA G1 Operating Manual

(11) Breathe normally.
Ensure proper regulator response.

The regulator should NOT make any unusual sounds including whistling, chattering, or

popping
(12) Remove the facepiece from the face.
(13) Ensure that air flows freely.
(14) Push the regulator release buttons.
Ensure that air flow stops.

5.3 Check Function of the Control Module, Power Module, HUD and Primary Low Pressure
Warning Device
DO NOT disconnect the coupling nut when pressure is shown on analog pressure gauge. Release
all pressure from the SCBA by opening the regulator bypass valve or pressing the purge button.
Removing the coupling nut while the SCBA is pressurized can result in serious personal injury,
death, or damage to equipment.
SCBAs with integrated PASS:
To make sure that all lights are visible for these checks, align the control module, regulator and SCBA
as shown below.
When testing the control module, lay the control module down flat to check the white light illuminating
the pressure gauge and to check if the graphical display and the analog gauge are consistent within
a 5% range (110/2216 psi, 225/4500 psi) with the cylinder pressure.
Both reset buttons on the control module have the same function. Use one when resetting the motion
alarm and the other when testing the manual alarm.
Verify proper function of the HUD, control module, power module, and low pressure warning device
by observing the control module gauge and display when the alarms sound. Perform this test with a
full cylinder.
WARNING
G1
Functional Tests
27
US