Chapter 3
Operation
Edition 1 – December 2019 SAFETY FIRST 85
MSA G1 Electronic Breathing Apparatus
Step Description Illustration
1.2 If battery is less than 20% charged and
showing one red bar, follow Changing Battery
procedure
2
Pressure seal, demand valve, control module software and electronic
self-test check.
2.1 Remove the demand valve from the facemask.
2.2 Open the cylinder valve, and observe the LED
display.
The LEDs must illuminate in a sequenced
pattern.
The start-up–self-test procedure will begin.
Listen for the short sharp chirp from the
mechanical low pressure whistle, indicating
that it is functioning.
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