1. Check the second stage IVS/RVS control switch to ensure that it is set to the "MIN" (-) position prior to connecting your regulator to the cylinder. 2. If present, gently turn the inhalation control knob "in" (clockwise), only until it stops. Do not apply excessive pressure. 3. If you are using a cylinder with a yoke connection valve, check the cylinder valve O-ring is fitted and not worn or damaged. If you are using a high pressure cylinder with a DIN connection valve, remove the protector cap from the first stage to inspect the sealing O-ring of toe DIN connector. If toe sealing O-ring is damaged or worn, replace it before mounting the regulator on the cylinder valve. Attaching the First Stage to a Cylinder Valve (Yoke Connection) |