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SyMpTOM
high pressure creep
(also called second stage leaks)
External Air Leak
(immersion Test)
Second Stage Leaks
Significant Breathing Resistance
Table 1: Troubleshooting Guide
pOSSiBLE CAuSE
1. The hP seat (57) is worn or damaged.
2. The crown (55) is damaged.
3. The spring block (61) internal wall is
damaged.
4. The o-ring (59) is worn or damaged.
1. The diaphragm (31) is worn or damaged.
2. diaphragm sealing area is damaged.
3. Port plug o-rings (44 & 46) are worn or
damaged.
1. hP leaks.
2. The o-rings (48) are worn or damaged.
3. The o-ring (48) sealing surface is
damaged.
4. The adjustable nozzle (49) is damaged.
5. LP seat (42) is worn or damage.
6. mP is set incorrectly.
7. Locknut (33) is tightened too much.
8. Nozzle is backed out too far.
1. filter (62) is clogged
2. Lever (35) is bent.
3. Lever (35) is set too low.
4. Insufficient MP.
5. Inhalation/exhalation valves are installed
incorrectly or hoses are installed on
wrong outlets.
6. Nozzle (49) is in too far.
7. Locknut (33) is backed out too far.
NoTe:
This is a partial list of possible problems and recommended treatments.
For more information, refer to the second-stage troubleshooting guide, or contact
Aqua Lung Technical Services Department for assistance with problems
not described here.
CAUTION:
Recommended treatments which require disassembly of the
regulator must be performed during a complete overhaul, according to
the prescribed procedures for scheduled, annual service. Do not attempt
to perform partial service.
TREATMENT
1. Replace hP seat
2. Replace crown
3. Replace spring block
4. Replace o-ring
1. Replace diaphragm
2. Replace body
3. Replace o-rings
1. see high Pressure creep symptoms
2. Replace o-rings
3. Replace adjustable nozzle
4. Replace adjustable nozzle
5. Replace LP seat
6. set mP to 135 ±5 psi
7. Readjust locknut
8. Set nozzle flush with cone
1. Replace filter
2. Replace lever
3. Readjust locknut
4. Readjust mP
5. check valve/hose installation
6. Set nozzle flush with cone
7. Readjust locknut
15
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