Aqua Lung S.E.A. LV-2 Technical Manual page 23

SyMpToM
System will not remain depressurized
after valve is shut and second stage is
purged.
high or unstable ip "creep"
low ip
External air leak
Table 1: Troubleshooting guide
First Stage/Valve assembly
poSSiBlE cauSE
1. The valve seat (20) is worn or damaged.
2. The valve seating surface is damaged.
1. The valve seat (20) is worn or damaged.
2. The valve seating surface is damaged.
3. The main spring (35) is defective
4. The HP seat (34) is worn or damaged.
5. The HP crown sealing surface is
damaged.
1. Main spring (35) is weakened or
damaged.
1.The piston head o-ring (31) or shaft o-ring
(33) is worn or damaged.
2. The o-ring grooves on the piston (32)
are damaged.
3. The piston head o-ring sealing surface in
the piston cap (30) is damaged.
4. The piston shaft o-ring sealing surface in
the body is damaged.
TREaTMEnT
1. Replace valve seat
2. Replace body (36)
1. Replace valve seat
2. Replace body (36)
3. Replace main spring
4. Replace HP seat
5. Replace body (36)
1. Replace spring
1. Replace o-ring (s)
2. Replace piston and o-rings
3. Replace piston cap
4.Replace body
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