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On page 3 of the Medical forum is a thread entitled"Wreck Salvage..." Toward the end is an account of an interesting OOA situation.
When you went to your back up reg did you check that someone had'nt turned your air off? Having dived with the people that I have that would have been my 1st thought!
In the event of a freeflow you should be able to manually turn your air on/off at will so you can obtain gas from the cylinder in question.
Same for your redundancy .Seems fortunate that there was someone else around.
Hope you get to the bottom of it!
Hobby. |