SERVICE MANUAL
Page 519
CHAPTER 5
9107
May/12
CHAPTER 5
Page 519
Feb/11
283
SERVICE MANUAL
ISO 9650
4.9 Gas inf
l
ation test
4.9.1 Unpack the liferaft, see Chapter 2, and put it on the packing table.
4.9.2 Reconnect the gas cylinder and operating head.
4.9.3 Pull the operating head actuator cable to inflate the liferaft.
4.9.4 Make sure the relief valves operate satisfactorily.
4.9.5 Let the liferaft settle for a minimum of 2 hours.
4.9.6 Use a manometer to make sure the gas pressure in each
compartment of the liferaft is at or above working pressure. Record
the gas pressure in each compartment. Record the temperature and
barometric pressure.
4.9.7 Leave the pressure in the each compartment for an additional 60
minutes. If the inflation pressure, corrected for temperature and
barometric changes, decreases by more than 5% of the noted
pressure, the liferaft fails this test.
4.9.8 If the pressure decrease is more than 5%, look for leaks and porous
fabric. If possible, repair the liferaft within the limits given, refer to
Chapter 6. Carry out a re-test of the buoyancy tubes again.
4.10 Gas cylinders test
4.10.1 Cylinder valve installation
If a cylinder is required to be hydrostatically tested or if a cylinder
adaptor has been removed then it must be refitted as follows:
(a) Prior to the cylinder adaptor being fitted to the bare cylinder,
apply the correct number of turns of PTFE tape, TABLE 504.
The tape must be applied to the threads of the cylinder adaptor,
(FIGURE 509).
(b) The charge weight is specified in the IPL section of this service
manual.
(c) The cylinder is to be charged following the procedures
recommended by the inflation system manufacturer. Reference
to these can be found in the Associated Publication section in
the relevant liferaft service manual.
