garywong007
Registered
I got this set of Atomic TFX last November and have put about 40 dives on it. Recently the 2nd stage starts to leak slowly every time it is purged. I checked the IP today and it reads 135 psi on sweep, drifts a bit and locks at 137 psi. The 2nd stage does not leak when air supply is turned on and breathing normally from it but whenever it is purged, it will keep on leaking slowly and cannot be stopped until the air supply is turned off. The magnehelic reads 1.5 CIW.
I took it apart, check and clean every parts, lube them and put them back together. After reassembly, I then followed the adjustment procedures based on the manufacturer's service manual, which says : "A) 1. Pressurize regulator and cycle lever, 2. If leaking, first check and make sure the lever has slack, 3. If still leaking, tighten spring adjuster until leak stops. B) 1. Set lever height (with the lever set screw) so there is ~1/16 to 1/8" of slack (This is done easiest by tightening set screw until leak starts then backing out 1/4 to 1/2 turn". To my frustration, the same problems still occurs - slow leaking starts once the purge button is pressed and it cannot be stopped. I tried to increase the spring tension but even with the spring adjuster all the way turned in, the leaking still won't stop. Subsequent adjustments were made with the spring tension adjuster and lever position at many combinations of different positions but still cannot stop the leak.
What could possibly be the reason and what should be done to correct this? It seems to me that the 2nd-stage's sealing holds pretty well against the air supply at IP but once the purged button is touched, the Venturi effect is so strong that it won't allowed the valve to be sealed again.....
Cheers
I took it apart, check and clean every parts, lube them and put them back together. After reassembly, I then followed the adjustment procedures based on the manufacturer's service manual, which says : "A) 1. Pressurize regulator and cycle lever, 2. If leaking, first check and make sure the lever has slack, 3. If still leaking, tighten spring adjuster until leak stops. B) 1. Set lever height (with the lever set screw) so there is ~1/16 to 1/8" of slack (This is done easiest by tightening set screw until leak starts then backing out 1/4 to 1/2 turn". To my frustration, the same problems still occurs - slow leaking starts once the purge button is pressed and it cannot be stopped. I tried to increase the spring tension but even with the spring adjuster all the way turned in, the leaking still won't stop. Subsequent adjustments were made with the spring tension adjuster and lever position at many combinations of different positions but still cannot stop the leak.
What could possibly be the reason and what should be done to correct this? It seems to me that the 2nd-stage's sealing holds pretty well against the air supply at IP but once the purged button is touched, the Venturi effect is so strong that it won't allowed the valve to be sealed again.....
Cheers