XLC 2nd Stage Service Manual.pdf - Aberdeen Watersports

14 XLC Second Stage Service & Repair ManualExternal Leak Test1. After disconnecting the regulator from the flow bench, connectit to a scuba cylinder filled to approximately 3,000 psi.Open the cylinder valve to repressurize the regulator, andsubmerge the entire system in a test tank of clean water.2. Observe any bubbles arising from the submerged regulatorover a one minute period. The recommended time is necessarydue to slower bubble formation that occurs in smallerleaks. Bubbles indicate a leak, which requires that the systemmust be disassembled at the source to check sealing surfaces,assembly sequence and component positioning in order tocorrect the problem(s).NOTE: Extremely small leaks may be better detected byapplying a soap solution or Snoop to the leak area.Bubble streams will indicate the source of the leak. Beforedisassembling to correct any leaks, rinse the entire regulatorthoroughly with fresh water and blow out all residual moisturewith filtered, low-pressure (50 psi) air. Disassemble andremedy the problem, referring to Table 1 - Troubleshooting.Subjective Breathing Test1. Depress the purge cover fully to ensure that an adequatevolume of air needed to clear the second stage flows throughthe mouthpiece. Then, inhale slowly but deeply from themouthpiece. A properly serviced and adjusted regulatorshould deliver air upon deep inhalation without excessiveinhalation effort, freeflow, or “fluttering” of the second-stagediaphragm. When exhaling, there should be no fluttering orsticking of the exhalation valve. If any of these problemsoccur, refer to Table 1 - Troubleshooting.This concludes annual service procedures for the XLCSecond Stage Regulator.© 1999 Aqua Lung America, Inc.