Table 6-7.—Life Preserver Test Pressures
FLOTATION CHAMBER
LEAKAGE TEST
MINIMUM
PRESERVER TYPE
TEST SEQUENCE
PRESSURE (PSIG)
PRESSURE (PSIG)
LPA-2 series
Both Chambers Simultaneously
2.0
1.6
LPU-21/P series
Both Chambers Simultaneously
2.0
1.6
LPU-23/P series
Both Chambers Simultaneously
2.0
1.6
LPU-24/P series
Both Chambers Simultaneously
2.0
1.6
LPU-28/P
Single Chamber Preserver
2.0
1.6
LPU-30/P
Single Chamber Preserver
1.0
0.8
LPP, Pouch Type
Single Chamber Preserver
2.0
1.6
hose mouthpiece. Maintain pressure between the
valve on the oral inflation hose and alternately
rubber hose and the oral inflation hose
mouthpiece to ensure a good seal. Depress the
position the leakage test fixture valve between the
measuring device, vent, and air supply until the
overpressure relief valve opens (2.5 psig ± .5
psig). Rotate the leakage test fixture valve to the
measuring device position to ensure that the life
preserver is inflated to the proper pressure.
Release the valve on the oral inflation hose.
Inspect for proper operation of the relief valve.
3. To test all preserver chambers, except
LPU-28/P, unlock the oral inflation valve and
insert it into the rubber hose. Rotate the valve to
the air supply position and inflate the chamber.
Alternately position the valve between the
measuring device, vent, and the air supply until
the proper pressure is attained.
4. Turn off the air supply, and after a
minimum of 15 minutes, readjust the pressure,
if necessary, to the original pressure. Refer to
table 6-7.
5. Disconnect the air supply and check test
fixture for leaks. Ensure all valves are closed.
6. Record temperature and barometric
pressure.
7. Four hours after the adjustment period in
step 4, record the test pressure.
8. Record temperature and barometric
pressure and correct test pressure for any changes
in temperature and barometric pressure. Figure
6-18 is an example of how you would record this
information.
Figure 6-18.—Example for recording readings.
CAUTION
DO NOT SUBMERGE LPU-23/P
SERIES AND LPU-24/P SERIES LIFE
PRESERVERS IN WATER TO CHECK
FOR LEAKS.
After 4 hours, if the pressure of the chamber
is below 1.60 psig, inflate to leakage test pressure
and coat with a soap solution to locate any leaks.
Mark any leak area you find. Rinse the preserver
with fresh water, air dry it, and repair it in
accordance with NAVAIR 13-1-6.1.
If the preserver has held the required pressure,
deflate it. Ensure that the inflation valve lever is
cocked. Install a carbon dioxide cylinder.
6-31
