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needle into the end of the gas cylinder, which is now punctured so
that the gas instantly fills the life jacket. Total buoyancy is normally
reached within 4 – 5 seconds.
Information
When inflated, the carbon dioxide (CO
2
gas) used to inflate the PFD
will slowly escape through the fabric over time. A slight reduction
of pressure will be observed after several hours of inflation. Topping
up by oral inflation may be required in the event of very prolonged
immersion.
IMPORTANT: See Special Considerations for Inflatable Devices
3) Oral Inflation
Properly armed and inspected
Inflatable PFDs will inflate
when manually or automatically
activated. However, you can fully
inflate the Inflatable PFD by mouth
(Fig. 5) should inflation not occur,
or if you are in a non-emergency
situation.
i. To orally inflate the Inflatable
PFD, first ensure that each of the
zippers (2) are completely opened.
NOTE: Oral inflation may cause the Inflatable PFD to break-out
suddenly (loudly) if any of the zippers are closed.
ii. Locate the oral inflation tube by opening the wearer’s left front
panel of the Inflatable PFD. Remove the dust cap from the end of
the oral tube and blow into the tube until the Inflatable PFD is fully
inflated.
WARNING: Avoid double inflation (CO
2
cylinder inflation after
full oral inflation) as it could damage the PFD.
Special Considerations for Inflatable Devices
The Inflatable PFD might not be armed when needed, either knowingly
or unknowingly. Inadvertant inflation causes several risks that you must
address to avoid drowning. Much less common but also important are:
6 Inflatable PFD Owner’s Manual
FIGURE 5