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Bauer Utilus not building high pressure

Discussion in 'Compressors, Boosters & Blending Systems' started by Scuba_Aaron, Aug 14, 2017.

  1. Scuba_Aaron

    Scuba_Aaron Contributor

    # of Dives: 200 - 499
    Location: Des Moines Iowa
    82
    19
    I have a Bauer Utilus that is not building up any high pressure. I finished filling a tank and was connecting another when I heard a small bang and then some high pressure releasing.

    After that all the high pressure was gone, there wasn't any air escaping and the compressor was running as if nothing was wrong, just no high pressure. The only other thing wrong was an unusually high amount of condensate that was coming out of the 2 condensate release taps on the P21 filter.

    It does build some pressure just not high pressure. I did some research and found that the 3rd stage intake and discharge valves might need to be replaced. I don't want to just start tearing apart without having any type of direction which is why I am asking here for any Bauer gurus. I do have the service manual for it.
     
  2. Wookie

    Wookie Curmudgeon Apprentice ScubaBoard Business Sponsor ScubaBoard Supporter

    38,199
    67,502
    I would examine closely the third stage suction valve.
     
    cerich likes this.
  3. Scuba_Aaron

    Scuba_Aaron Contributor

    # of Dives: 200 - 499
    Location: Des Moines Iowa
    82
    19
    Wookie,
    Is the suction valve that you are referring to the same as what the service document is calling the intake valve?
     
  4. Wookie

    Wookie Curmudgeon Apprentice ScubaBoard Business Sponsor ScubaBoard Supporter

    38,199
    67,502
    Yes
     
  5. Scuba_Aaron

    Scuba_Aaron Contributor

    # of Dives: 200 - 499
    Location: Des Moines Iowa
    82
    19
    Replaced the suction valve and the compressor builds high pressure now. Something interesting though, I was able to replace the discharge valve as the valve I got from Filter Techs must be a newer style as my old valve threads in to the valve head where the new one doesn't. Wonder if I will have to update the 3rd stage valve head and cover, will have to call Filter Techs to see if that is even possible.

    Another thing I noticed is that after shutdown, all pressure is leaking out through intake filter, is that normal? I don't think I ever noticed that before. It doesn't leak when the compressor is in operation which is good news.
     
  6. CraigAClark

    CraigAClark Instructor, Scuba

    # of Dives: I'm a Fish!
    Location: South Florida
    569
    32
    How old is your Utilus. There was a time, probably in the '70's, where they used a 7780 discharge valve that screwed into the head. I have no idea if it is still available.
     
  7. Scuba_Aaron

    Scuba_Aaron Contributor

    # of Dives: 200 - 499
    Location: Des Moines Iowa
    82
    19
    From the tag it looks like it might be 1989, can't be for sure though.
     
  8. Wookie

    Wookie Curmudgeon Apprentice ScubaBoard Business Sponsor ScubaBoard Supporter

    38,199
    67,502
    Your first stage suction valve is also having issues. I think that's a reed valve, but I could be mistaken. It should not be leaking back. Might just have some carbon on it.
     
    cerich likes this.
  9. cerich

    cerich ScubaBoard Supporter ScubaBoard Supporter

    # of Dives: 5,000 - ∞
    Location: Georgia
    6,877
    3,976
    first rule of compressors..it's almost always the third stage, second rule, when it isn't the 3rd stage it get's weird.
     
    rcontrera likes this.
  10. CraigAClark

    CraigAClark Instructor, Scuba

    # of Dives: I'm a Fish!
    Location: South Florida
    569
    32
    Pictures please.
     

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