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  1. #27
    Join Date
    Jul 2012
    Location
    Athens, GA.
    Posts
    143
    Well for your sake I hope these guys figure out your problem so they can get you out on that boat asap. Lol

    JASON sent this from his DUMB-PHONE

  2. #28
    Join Date
    Jul 2001
    Location
    Canada
    Posts
    1,827

  3. #29
    Join Date
    Jan 2004
    Location
    PA
    Posts
    68,797
    In your first post. You have described what you did wrong. just keep reading your first post until it jumps out at you.
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    How many times must one fix something before it is fixed?

  4. #30
    Join Date
    Mar 2008
    Location
    Central NH
    Posts
    141

    My Advise

    Jurta, the best advise I can give you is that mouth closed, eyes open is a good way to learn on this sight. Arguing with guys that have 1k+ posts and/or multiple times the amount of experience that you have is probably not a great way to get them to help you. But hey I probably just don't understand, I paid $20,000 to go to school. So I guess I'll throw in another

  5. #31
    Join Date
    Mar 2007
    Posts
    543

    some homework for you

    Quote Originally Posted by jurtaman View Post
    Ahh nice to wake up to actually helpful comments.. Ambients in NH have been in 90's lately..Now, why did I ask you what the ambient temp at the condensing unit was (as you were standing there with the gauges on the system)? and when you said check for air in the system does that only work for a rooftop unit (or one w/ evap and cond in same place) whereas my evap is in a cold place... or could i valve off the cond. unit, let it settle and check it that way maybe? how could i know for sure air wouldn't be in the evap or lineset? Is it a given all air is in the condenser since it can't be condensed (and therefore trapped in the condenser above liquid) or could some bubbles pass in the liquid (I don't see any in the glass)... hmmmmm...Your real close to having the answer to your question(actually, I should have used the term noncondensibles). I want to get some developments for you all but you must understand my job position I do many other things and only have so much time to experiment. As I originally said it's my pet project, 1st burned out condensing unit replacement.. and it's not even getting a new unit just one known working one stored in a dirt-floor damp barn basement, whatever tech evacced the unit should have closed the service valves.. It sat 2 years valves open! BTW For the ones talking about "call a refrig. guy"... our regular service guy said that our competitor's restaurant has their own in-house guy, and when u have your own guy it's cheaper to dick around with used stuff. We get used stuff a lot at restaurant auctions. He said it's not worth it to pay him to mess with it. At that moment.... another company position for me was born. Refrig tech.. Thank you
    So It's not my immediate job it's a side aspect of my job my life doesn't count on it... for $25 you can get a 609 license online, and for like $150 you go take a test at your HVAC distributor, "proctored enviroment" and get your 608. I passed the EPA test 4 wrong out of the 100 so say what you want i don't have 2 years to goto school I'm too busy boating on the lake with my family!
    Personal opinion, with some training, you could become a good service tech. Invest some time and money now, and it will pay off down the road. It's your choice.

  6. #32
    Join Date
    Sep 2011
    Posts
    85
    Bubbles in the sight glass don't necessarily mean there is air in the system, but you would already know that with your grasp physics. This isn't plumbing... It's refrigeration.

    Think about the physics... And don't be a dlck, "it is better to be thought a fool and remain silent, than to speak out and remove all doubt", abraham lincoln said that.

  7. #33
    Join Date
    Jul 2012
    Location
    NH
    Posts
    22
    Well we are all so anxious here I can't wait to get my h10 should be in friday. i initially used the 150psi n2 bubbles- had leaky service valves and replaced the one that I couldn't tighten the packing nut on, sprayed down both service valves, line joints, TXV didn't see any bubbles did a quick triple evac then pulled down to 400 enjoyed dinner for the last pull.. new to microns thought it would hold solid on blank off but always would creep up. now that i understand that is normal, and Ritchie/YJ claims rising up to 2000 is OK??!! Seems little high to me i guess it depends on the application.. either way, the rising microns fustration at that moment cause me to just vac and go. Like in my very first post.. I suspect air... this thread seems to be pointing in that direction.. just want to have something to try out the h10 on friday see if i could possibly have a tiny leak while it's charged.. it _is_ old equipment... after a leak check I'll re-vac But I'll pull it down for a while... Before then I ask this 1 question hopefully will result in remarks that are related to the question..

    -->>triple evac.. let the n2 sit in there (like an hour) to "absorb" this moisture or is it not time sensitive and you add it to help "sweep" out the moisture on subsequent pull?

    My 608 book mentions it's for sweeping but nothing about a hold time.. I'll "listen" now but no updates until after friday.. I suspected air first and still do. Thanks to those of you finally coming around and giving a related response. Curious about this triple evac hold time though... opinions please!

  8. #34
    Join Date
    Jul 2012
    Location
    Athens, GA.
    Posts
    143
    Moisture or leak...im shocked your 608 qwik study did not tell you what to do.

    JASON sent this from his DUMB-PHONE

  9. #35
    Join Date
    Sep 2011
    Posts
    85
    Correct me if i'm wrong, b/c i honestly don't know, but i've been told you can't get below ~1500 microns with a leak

  10. #36
    Join Date
    Jul 2012
    Location
    Athens, GA.
    Posts
    143
    I think its either moisture, leaks, non condensibles or ghosts. Good luck Jurta.

    JASON sent this from his DUMB-PHONE

  11. #37
    Join Date
    Nov 2006
    Location
    Southeastern Pa
    Posts
    19,567
    Quote Originally Posted by jurtaman View Post
    Well we are all so anxious here I can't wait to get my h10 should be in friday. i initially used the 150psi n2 bubbles- had leaky service valves and replaced the one that I couldn't tighten the packing nut on, sprayed down both service valves, line joints, TXV didn't see any bubbles did a quick triple evac then pulled down to 400 enjoyed dinner for the last pull.. new to microns thought it would hold solid on blank off but always would creep up. now that i understand that is normal, and Ritchie/YJ claims rising up to 2000 is OK??!! Seems little high to me i guess it depends on the application.. either way, the rising microns fustration at that moment cause me to just vac and go. Like in my very first post.. I suspect air... this thread seems to be pointing in that direction.. just want to have something to try out the h10 on friday see if i could possibly have a tiny leak while it's charged.. it _is_ old equipment... after a leak check I'll re-vac But I'll pull it down for a while... Before then I ask this 1 question hopefully will result in remarks that are related to the question..

    -->>triple evac.. let the n2 sit in there (like an hour) to "absorb" this moisture or is it not time sensitive and you add it to help "sweep" out the moisture on subsequent pull?

    My 608 book mentions it's for sweeping but nothing about a hold time.. I'll "listen" now but no updates until after friday.. I suspected air first and still do. Thanks to those of you finally coming around and giving a related response. Curious about this triple evac hold time though... opinions please!
    You do realize that your "608 book" is NOT an instruction manual for HVAC, right?
    [Avatar photo from a Florida training accident. Everyone walked away.]
    2 Tim 3:16-17

    RSES CMS, HVAC Electrical Specialist

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  12. #38
    Join Date
    Feb 2012
    Location
    Toronto Canada
    Posts
    1,090
    Is this unit even cooling??

  13. #39
    Join Date
    Sep 2007
    Posts
    176
    Methinks Jurta likes sparring more than learning about refer...

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