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Cant hit 29Hg on new pump? (I would imagine I am doing something dumb)!

Discussion in 'Concentrates and Extracts' started by smokajoe, Jan 15, 2014.

  1.  
    smokajoe

    smokajoe Well-Known Member

    I recently bought a vacum and am wondering I start the pump and my guage says im at 24.5Hg, wtf on my instructions it said cut a hole in top of guage (like plastic piece) anyways still only hit 24.5Hg, and it loses a few hg over like 30 minutes? Am I doing something wrong?:wall:
  2.  
    Herb & Suds

    Herb & Suds Member

    Sounds like a leak
  3.  
    thebay420

    thebay420 Member

    Are you at a high altitude?
  4.  
    smokajoe

    smokajoe Well-Known Member

    I am above sea level yes, does that impact this alot?
  5.  
    Fadedawg

    Fadedawg Well-Known Member

    Sounds like a leak. What size chamber, which pump, does it have an isolation valve for the pump, do you have a picture?
  6.  
    smokajoe

    smokajoe Well-Known Member

    Sorry I cant get pictures everyone, anyways it is a 3 gallon pot, with lid, manifold atop. I have a CPSS 4cfm single stage vacum. And again I am above sea level so how does that impact this?
  7.  
    smokajoe

    smokajoe Well-Known Member

    So far, the Hg rapidly drops-how do I go about diagnosing the leak?
  8.  
    Sirdabsalot462

    Sirdabsalot462 Well-Known Member

    Soapy dish water and a spray bottle to find the leak.

    Subtract approximately 1” of mercury per 1,000 feet of elevation.

    I'm in Co.Springs

    My vac pegs right before the 25 mark.

    It's altitude on the gauge.

    Teflon Tape on every threading, reinforce all hoses with a hose clamp.
    Post back if you need more assistance.

    GL Joe!
    :)
  9.  
    Fadedawg

    Fadedawg Well-Known Member

    Pressure at Altitude-1-1.jpg

    What SDL says about altitude. Here is the chart. You might try spraying acetone on the joints. If any gets sucked into the chamber, it will cause a sudden rise in pressure.

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