G1 Pass Device - MSA G1 Operating Manual

Primary Low Pressure Warning Device (Bell)
The primary low pressure warning device alarms when there is approximately 35 % of the SCBA's
rated service time remaining and when the cylinder valve is first opened, providing an audible indica-
tion that the alarm is working properly. NIOSH regulation states that the primary low pressure warning
device must alert the user at 35%  2%. MSA sets all low pressure warning signals to the mean of
the requirement, hence 35 %.
Cylinder
30 min. 2216 psi
30 min. 4500 psi
45 min. 4500 psi
60 min. 4500 psi
NOTE: The remaining service time calculations are based on a 40 LPM (liters per minute) NIOSH
breathing rate.
2.6

G1 PASS Device

The PASS device on the G1 SCBA is made up of three components: battery module, power module,
and control module. The PASS device provides the user the ability to monitor movement through a
motion sensor. When a user remains motionless for 30 seconds, the PASS device goes into full alarm
to alert those around the user. The PASS device also monitors cylinder pressure and battery status.
G1 Control Module
The G1 control module is the user's interface with the SCBA and PASS device.
The control module is assembled to the high pressure air source and to the power module by a pneu-
matics and electronic hose assembly. It is equipped with an analog gauge as well as a graphical
display to provide vital information: numeric cylinder pressure, battery status, alarms and time
remaining (optional).
Remaining Service Time
(Approx.)
10 minutes
10 minutes
16 minutes
21 minutes
G1
End of Service Time Indicator Pressure
(Approx.)
775 psi
1575 psi
1575 psi
1575 psi
Description
US
15