First Stage Testing - Aqua Lung SEA LV2 Technical Manual

14
24. Pass the threaded end of the swivel port plug (14) through
the hose swivel on the MP hose (11) making sure both o-rings
(13) are covered by the hose swivel. Insert the spacer (10)
onto the swivel port plug and screw it into the upper MP port
(opposite the pressure gauge) on the first stage body (8). Use
a 3/16" hex bit socket and inch pound torque wrench to apply
60 in-lbs (6.8 Nm) of torque to the swivel port plug.
NOTE: O-ring (25) for the second stage swivel end of the
MP hose (11) is in the second stage overhaul kit PN108343.
25. Install o-ring (25) into the
groove on the MP hose (11).

First Stage Testing

WARNING: Compressed air can be highly explosive
and is dangerous if misused. Ensure the cylinder
valve is opened slowly. Use eye and ear personal
protective equipment when performing any tests
involving compressed air.
1. Cycle the handwheel (18) several times to ensure the
proper function of the indicator ring (20) and seat & disc
retainer (29). Close the handwheel when finished.
2. Attach the SCUBA fill adapter to the fill port (33) and slowly
fill the SEA to 3000 PSI (207 BAR).
3. During the fill process, check for any air leaking from the open
end of the MP hose (11). If an air leak is detected, immediately
stop the filling process and refer to Table 1 : Troubleshooting
Guide section of this manual to determine its possible cause.
If no leak is detected, finish filling the cylinder and remove the
SCUBA fill adapter from the fill port (33).
4. Screw the test gauge onto the MP hose (11) until hand-
tight. Open the bleed valve on the test gauge and slowly
open the handwheel (18). While watching the test gauge,
slowly close the bleed valve.
NOTE: Correct MP for the SEA is 135 ±20 PSI (9.3 ±
1.4 BAR), with an inlet pressure of 3000 PSI (207 BAR).
• If a stable MP has been achieved, note the pressure
indicated on the test gauge. Cycle the bleed valve
several times and closely monitor the test gauge for
several minutes, making sure the MP has remained
stable.
• If the MP exceeds 155 PSI (10.7 BAR), quickly open the
bleed valve and close the handwheel (18). Refer to Table
1 : Troubleshooting Guide section of this manual to
determine its possible cause.
• If the MP rises more than 5 PSI (0.35 BAR) in 5-15 seconds
after cycling the bleed valve or "creeps", this indicates a HP
leak. Refer to Table 1 : Troubleshooting Guide section of
this manual to determine its possible cause.
5. Close the handwheel (18) and open the bleed valve to
depressurize the system. Remove the test gauge from the
MP hose (11).
6. Since there is nothing attached to the end of the MP hose
(11) and the cylinder (43) is fully charged, set the system in a
secure place so that the valve cannot be accidentally opened.
SEA MK / LV2 Technical Manual