2
Cousteau/ SEA First Stage Service & Repair Manual
© 2000 Aqua Lung America, Inc.
Initial Inspection Procedure
EXTERNAL INSPECTION
1.
Visually inspect the sintered filter to check for any signs that
contaminants may have entered the system, such as moisture,
rust, aluminum oxide, or charcoal.
NOTE: A green discoloration positively indicates that mois-
ture has entered the regulator, and internal corrosion is
therefore likely to be found in the first stage. A white or rust
colored residue usually indicates that the regulator has been
used with a corroded aluminum or steel cylinder. Advise the
customer of the proper methods for maintaining the regula-
tor, and the possible need to obtain service for their cylinder.
2.
Slide back the hose protector(s) to inspect the condition of the
LP hose at its fittings and along its length. Check closely for
any signs of blistering or abrasion, or corrosion of the fittings.
3.
Closely examine the finish of the first stage to check for any
scratches, dents, or other signs of damage to the plated finish.
CAUTION: Do not clean any parts which show damage to
their plated finish inside an ultrasonic cleaner. Ultrasonic
vibration may cause further damage to the finish.
4.
Closely examine all other parts of the first stage for any other
signs of external damage or corrosion.
5.
If present, examine the external diaphragm of the DRY
environmental protection kit to determine whether moisture
has entered the sealed chamber above the main diaphramg.
IMMERSION/ LEAK TEST
1.
While the regulator is fully assembled and connected to a
second stage, connect the first stage to a cylinder that is filled
with 3,000 psi. Check to ensure there are no open ports or
hoses, and slowly open the cylinder valve to pressurize the
regulator. If obvious leakage occurs, including freeflow from
the second stage, shut off the air supply and proceed directly
to the section titled, Disassembly Procedures.
2.
If leakage cannot be heard, or if the source of leakage de-
tected audibly is not obvious, immerse the entire system in
fresh water and observe closely for up to one minute to check
for the formation of bubbles. Pay particularily close attention
to the area of the spring retainer, and to all hoses along their
length and at their fittings on both ends.
4.
Locate the source of any leakage found and refer to Table 1 –
Troubleshooting to determine its possible cause.
5.
Turn the cylinder valve shut and depress the second stage
purge button to depressurize the regulator before performing
the next procedure.
