Quote:
| Originally Posted by MATTBIN Sorry this isnt meant as a hijack, When I went invert a while ago on for me a new twinset there was a discussion on here about how to shutdown, I stated that I would go for the rh valve (same reasons as you - most likely) and I'm sure I recall one of the DIR guys/instructors saying "go for the isolator", I will see, when I have a moment if I can find it in the archives.
I'm still not sure though that item 11, close and open isolator will tell you if the manifold has gone or not, surely only by closing both pillar valves will you then know, gas can only escape through the manifold whilst you have gas in the tanks, shutting the isolator will tell you nothing about the manifold. It wont stop the gas leaking from it.
Matt |
We have already disgnosed that the right post is not the cause of the problem. that leaves the junctions between the manifold and left and right posts, the isolator, and the left post.
If we isolate at this point, we limit the escaping gas if it is either side of the manifold. closing the isolator will keep the gas in either side of the set, whichever side has failed.
The isolator
itself we can do nothing about if it has failed.The gas is going to go.
that then leaves us free to diagnose the left post. Remember this is a drill. would I open the isolator immediately after closing it. No. This is a drill to build muscle memory, not to replace the thought process of diagnosing a problem. this is adifferenc ein approach between the nonDIR and DIr approach. the TDI method I taught was all about "SAVE the GAS" and then worry about the cuase later. The GUE approach is completely different, more about diagnosis and understanding. If I can't save the gas it's no biggie anyway. everyone else in the team has enough gas to get them and me to the next gas source.