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funny air smell / taste

Discussion in 'Compressors, Boosters and Blending Systems' started by HeatCker, Jul 19, 2019.

  1. nadwidny

    nadwidny Instructor, Scuba

    # of Dives: I just don't log dives
    Location: Cranbrook, BC
    Yes there are and they are better. Cheap hardly ever means good.
  2. abnfrog

    abnfrog Tech Instructor

    # of Dives: 2,500 - 4,999
    Location: great white north
    2 of the worst things you can do to a compressor is not run it for months and get it real hot . running every few months is self evident , the second buy a laser heat gauge , people who have taken a fill station operator course know what I mean . if you stay ontop of what to do your compressor will last for years
    rhwestfall likes this.
  3. HeatCker

    HeatCker Solo Diver

    thanks for all the comments..
    found out that the smell comes from the filter when it gets moisture in it, we've had very high humidity here lately..
    part of the filter is made up of small beads and its the beads that smell when they get wet..
    the filter was removed and the rubbery stale odour was very noticeable..
    the filter was repacked with new materials, the humidity is back down to normal, so the compressor is back in business, so to speak..
    maybe the beads release the smell to indicate that moisture is in the filter, like the rotten egg smell in natural gas, used as a warning that something is not right ???
    my tanks have been emptied, inside cleaned to remove residual smell, will put some air back in them today and hopefully go diving tomorrow..
    its been an interesting learning experience for me..
    and an lazer beam thermometer/heat gauge will be purchased to monitor the working temp of the compressor..
  4. rhwestfall

    rhwestfall Solo Diver

    # of Dives: 200 - 499
    Location: "La Grande Ile"
    I might recommend more attention (and frequency) with dumping the water separator. For my compressor, I am dumping it about every 10-15 minutes as it is a manual and a small separator.

    I also utilize a moisture indicator, installed on the downstream port of my water separation unit(s). Gives a peace of mind I am doing it right.

    My last analysis was 20.3 ppm and -67.2 F dew point for H2O with samples taken pumping air under very humid conditions.

  5. HeatCker

    HeatCker Solo Diver

    the manufacturer usually recommends 15 minute dump interval, the compressor has now been set to a 10 minute interval..
    any less than 10 minutes and the dump would be to dry and add extra wear and tear on the parts..
    i think the problem comes down to trying to fill tanks in the very high humidity conditions we were having..
    knowing this more attention will be paid to humidity levels and that will dictate when the compressor is run...
    i'll pass on the downstream moisture meter idea... thanks
  6. michael-fisch

    michael-fisch Manta Ray

    # of Dives: 2,500 - 4,999
    Location: Germany
    The cute little beads soak up the water. The activated charcoal removes the odors and anything else that is unhealthy, thats why the army still uses activated charcoal in their gas masks.


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