Aqua Lung CORE - Appendix and Reference Material; Troubleshooting Guide

Service Manual Core 1
st
stage
Service Manual Core 1
st
stage
Rev. 05/2015 17
APPENDIX
Table 1. Troubleshooting Guide
SYMPTOM
POSSIBLE CAUSE
TREATMENT
1. The HP seat (124624) is worn or damaged
1. Replace the HP seat
2. The crown (127585) is damaged
2. Replace the crown
Increase in MP
3. The O-ring (124704) is worn or damaged
3. Replace the O-ring
(likely to cause a second
stage leak)
4. Groove on the plug (129120) damaged
4. Replace the plug
5. O-ring (124612) is worn or damaged
5. Replace the O-ring
6. O-ring crown groove on the body (129254) is
damaged
6. Replace the body
1. O-rings on the MP and HP plugs are worn,
extruded or damaged
1. Replace the O-rings
2. The diaphragm (119159) is worn or damaged
2. Replace the diaphragm
3.The diaphragm (127579) is worn or damaged
3. Replace the diaphragm
External leak
4. The diaphragm (127579) sealing face on the body
(129254) is damaged
4. Replace the body
5. Wet or dry chamber screw (128113 or 128115)
loose
5. Tighten the chamber
6. Din shutter crown O-ring (124709) damaged
6. Replace the O-ring
7. Filter O-ring (124703) damaged
7. Replace the O-ring
8. Plug O-ring (213714) damaged
8. Replace the O-ring
9. Yoke shutter valve O-Ring (473056) damaged
9. Replace the O-ring
10. Yoke shutter crown O-ring (124703) damaged
10. Replace the O-ring
11. DIN shutter crown O-ring (473057) damaged
11. Replace the O-ring
1. Cylinder valve not completely open
1. Open the valve, check the cylinder
pressure
2. Cylinder valve requires servicing
2. Try another cylinder
Reduced airflow or significant
breathing resistance on
complete regulator
3. Filter (129209) blocked
3. Replace the filter
4. The cylinder is empty
4. Charge the cylinder
5. The hose is closed
5. Change the hose