INFLATION ASSEMBLY INSPECTION

Do not use a needle voltage multimeter. The test leads of the multimeter should be provided with a standard test probe ( + ) and a banana type test plug (–). When using the multimeter, you should ensure that it is set in the voltage-measuring mode and NOT the resistance-measuring mode. A resistance measurement will trigger the squib and fire the inflator. Insert the negative (–) test probe into the end port of the sensor plug. Remove you hand. Faulty readings can be obtained or the squib may fire if the body becomes an electrical pathway between the sensor pin and any conductive part of the inflator assembly. Now, using the pointed positive (+) probe, touch and maintain contact with one of the screw heads near the lever end of the inflator. Refer to figure 6-21. Wait 15 seconds for the FLU-8A/P circuit to stabilize after connecting the test leads before taking the voltage reading. The voltage reading should begin at a high value and then gradually shift downward before final stabilization. If no downward shift in meter reading occurs, the FLU-8A/P inflator will be rejected. A reading of +12 volts or more indicates the battery is at full power and installed correctly. A reading of -12 volts or more indicates the battery is installed backwards. The battery must be re- versed. A reading of zero volts indicates the bat- tery contact is faulty or the battery is not installed properly. Inspect and correct if nec- essary. If a correct battery voltage reading can- not be obtained with a battery of verified full charge properly installed, the inflator is defec- tive. Reject and report for an engineering investi- gation according to Volume III, OPNAV 4790.2. 239.474 Figure 6-21.—Testing battery. INFLATION ASSEMBLY INSPECTION Inspect life preserver inflation assemblies as follows: Remove the carbon dioxide cylinder from the valve assembly. Examine the inflation device, actuating lever and lanyard, and locking pins for fraying, corrosion, stripped threads, and other damage. If required, remove any sharp edges from the valve with a fine, round file. On LPU-28/P, LPU-30/P, and LPP life preservers, operate the toggle three or four times. Ensure that the lever moves freely and the piercing pin moves properly inside valve body. On life preservers with beaded inflation handles, operate beaded inflation handle three or four times. Ensure that the lever moves freely and the piercing pin moves properly inside valve body. Ensure that the packaging cord loop is not pinched between the piercing pin and the actuating lever. If there is free play in the actuating lever when it is in its cocked position, the packaging cord loop is pinched. If necessary, reinstall the cord. Refer to NAVAIR 13-1-6.1. NOTE: Each time the inflation assembly gaskets or the inflation assembly is removed and replaced for any reason, a functional test must be conducted. Use new gaskets when you replace the device. If any discrepancy is noted in the inflation device that is not repairable, remove the assembly and install a new inflation device. If carbon dioxide cylinder locking screws are installed on LPA type and LPU type life preservers, remove them. Ensure that CO₂cylinder locking screws are installed on LPU-30/P life preservers. Inflation Lanyard Pull Test Special Equipment Required Quantity Description Reference Number 1 Pull-Scale, DPP-50 0 to 50 lb or equivalent 6-33