MSA G1 SCBA Operating Manual page 41

(8) The latch can freeze when moist. Clean and dry the latch before storing the SCBA at low
temperatures.
(9) If moisture gets on the dove tail, the cylinder could get stuck in the dove tail if it freezes. Clean
and dry the dove tail before storing the SCBA at low temperatures.
(10) Ensure that the UAC dust cap is in place before storing the SCBA.
Moisture can cause problems in the SCBA if it freezes. However, moisture can cause freezing prob-
lems even if the surrounding air is above freezing. Air flowing from the cylinder through the pressure
reducer and regulator drops from cylinder pressure to close to atmospheric pressure very quickly. This
causes the air to expand and creates a cooling effect. Although the surrounding temperature may be
warmer than 32°F (0°C), the temperature inside the regulator may be lower.
Prior to storage of the SCBA at temperatures below 0°F (-18°C), verify that the alkaline battery module
has new batteries and that the rechargeable battery module is fully charged prior to storage.
CAUTION!
New batteries must be installed in the alkaline battery modules prior to storage of the SCBA at cold
temperature for an extended period of time. The rechargeable battery module must be fully charged
prior to storage of the SCBA at cold temperature for an extended period of time.
Telemetry Equipped SCBA
Telemetry equipped SCBA in cold temperatures may lose and gain connection during use. Even if the
telemetry module connection is lost, the device will continue to try and reconnect. The breathing
performance of the SCBA is unaffected by the telemetry device.
G1 SCBA
During Use
US
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