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User Safety Alert Subject: PFD inflation failure due to false positive service indicators and incorrect CO2 cylinder installation Halkey-Roberts has become aware that some Halkey-Roberts’ inflators can indicate a green “Ready” status when the CO2 cylinder is not properly installed per the arming or rearming instructions. This false positive green indication occurs when the cylinder-bayonet assembly is inserted in the inflator, not turned, and the cylinder is not ejected. Cylinders with bayonet tips are designed to be pushed in and turned 1/8th turn clockwise to a full stop to secure the cylinder. When the cylinder is not turned to secure it in place, the PFD will not inflate with CO2. (Note: The PFD may be inflated orally.) If the CO2 cylinder is not turned, the mechanism is supposed to eject it. In some production units a false positive green indication can be achieved by simply pushing the cylinder into the mechanism without turning it 1/8th turn to a full stop. With one of these units a user was led to believe the cylinder-bayonet was properly engaged without turning it due to the firm seating of the cylinder-bayonet which also prevented the cylinder-bayonet from ejecting as designed. PFDs affected: Check the model number of the PFD (located on the manufacturer’s label) to see if your PFD is affected. The model numbers are:
User Action: Check your device to ensure that the inserted CO2 cylinder-bayonet has been fully turned clockwise prior to use. Use the arming/indicator instructions that follow if you are uncertain about the readiness of your PFD. If your PFD has been inflated, updated rearming instructions are attached. By following these arming instructions, the PFD will be properly armed for use. If your PFD inflator does not eject an unturned cylinder-bayonet, contact the PFD manufacturer for advice or servicing.
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