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XL4+ Setup froze today

Discussion in 'Apeks' started by CanadaDan, May 17, 2020.

  1. lexvil

    lexvil ScubaBoard Sponsor ScubaBoard Sponsor

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  2. Bigbella

    Bigbella ScubaBoard Supporter ScubaBoard Supporter

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    If high IP were always the issue and risk, in colder waters, you'd think that the Poseidon Cyklon 5000, which operates at 11.5 bar (about 167 psi) would have been a frozen block of peas; yet, it was not, even while ice diving, years ago; and it took a good deal of purposeful hyperventilating, to get it to free-flow . . .
     
  3. lexvil

    lexvil ScubaBoard Sponsor ScubaBoard Sponsor

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    Yet all he has ever described is free flow and everyone assumes freeze I think his problem is in the first stage.
     
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  4. Bigbella

    Bigbella ScubaBoard Supporter ScubaBoard Supporter

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    I thought that the 8˚C waters and the work of breathing were issues enough. A good number of second stages are more prone to free-flow, below even 10˚C, according to a tech that I knew in Vancouver. It was just about the most common complaint at his shop.

    There was also mention made of a recent servicing. You'd think that the IP would have been adjusted to specs?
     
  5. lexvil

    lexvil ScubaBoard Sponsor ScubaBoard Sponsor

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    I’m getting the drift that he is only “checking” the reg not servicing it (he being the tech) no IP mentioned. Not being there it’s all guesses based on poor information, “my reg froze and free flowed” is not much different than “my reg free flowed and froze” except where you look for the cause.

    The last statement was it went into free flow once hitting warmer water on the ascent. I don’t know if this is a sealed first stage, if it is I would look at the transmitter binding. If not sealed the HP seat/orifice or orifice sealing chamber would be where I would look. Just guessing.
     
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  6. Ben_3

    Ben_3 Barracuda

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    It was about 25’c outside.

    When I brought it for inspection after the first event he made sure everything was to lowest book spec to avoid free flow. The reg was overhauled completely during the winter.

    I’m just wondering if it’s common for this reg. Should I try and find a solution or should I consider switching it out for something bigger like an XTX range reg. That would include spending.

    Something I thought of but I don’t think makes a huge difference is in relation to the first stage. It’s small compared to many others and only has 1 hp port. Maybe having all the ports used up is asking to much?
     
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  7. Ben_3

    Ben_3 Barracuda

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    I’m not a reg expert but are you saying to check where the transmitter or spg is screwed in to the hp port?
     
  8. lexvil

    lexvil ScubaBoard Sponsor ScubaBoard Sponsor

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    No, it the way the ambient pressure is transmitted in a sealed regulator, unsealed is a direct exposure to the water, in a sealed reg there is another diaphragm (seal) and a chamber that is dry (a few older exceptions to dry) the outer diaphragm pushes the transmitter inside the chamber to compensate for water pressure, if that sticks the IP will go way up, once again without having it in hand it’s all just possibilities.
     
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  9. Ben_3

    Ben_3 Barracuda

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    So this is what I found out so far, they have a memo out saying there is an issues with inconsistant thicknesses for the second stage diaphragmes. This leading to a slight instability in setting.

    Replacement parts are covered.

    Maybe this would explain the free flows / freeze ups
     
  10. lexvil

    lexvil ScubaBoard Sponsor ScubaBoard Sponsor

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    Maybe...
     
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