Cold Weather Operation; All Scba - MSA G1 SCBA Operating Manual

7.3

Cold Weather Operation

WARNING!
Before going into a hazardous environment, make sure there is no water, moisture, or dampness

on or in any of the SCBA components. Any moisture on or in the SCBA components can freeze
and result in a malfunction of the SCBA. Make sure all components operate correctly.
Before going into a hazardous environment, make sure there is no water or ice on the inner

surfaces and components of the regulator, regulator buttons, and bypass valve. Make sure the
buttons and bypass valve operate correctly.
Do NOT use a regulator that has water contamination on the inner surfaces or components.

Remove the regulator from service, and dry all surfaces and components fully. Make sure all regu-
lator components are fully dry before returning the regulator to service.
Failure to obey these warnings can result in serious personal injury or death.

7.3.1 All SCBA

• Any water on or in the SCBA components can freeze and restrict airflow. To keep moisture from
entering the regulator, keep the regulator in the regulator keeper when it is not in use.
• When the SCBA is away from heat, water spray can freeze on the regulator surface. Ice can build
up and bind the side buttons or the bypass valve. Before entering or re-entering a hazardous atmo-
sphere, make sure there is no ice on the side buttons or bypass valve, and that they operate
correctly.
• Periodically make sure there is no ice on the bypass valve.
• Moisture can enter through the cylinder valve or coupling nut when cylinders are replaced on the
SCBA. When replacing cylinders, make sure moisture or contamination does not enter the system.
Remove any ice from these fittings.
• Wipe the coupling nut threads and cylinder valve threads before installing a new cylinder. Water
can contaminate the system and freeze.
• When cleaning the SCBA, make sure water does not enter the facepiece or regulator.
• Thoroughly dry the facepiece and facepiece mounted regulator after cleaning and disinfecting.
Obey the Confidence Plus
• The latch can freeze when moist. Clean and dry the latch before storing the SCBA at low tempera-
tures.
• 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.
• Make sure 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 decreases 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.
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Cleaning Solution instructions.
G1 SCBA 2018 Edition
During Use
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