Page 2 of 2 FirstFirst 12
Results 14 to 22 of 22
  1. #14
    Join Date
    Aug 2002
    Location
    Southold, NY
    Posts
    27,154
    Post Likes
    Pressures without temperatures are worthless!

  2. Likes joemach liked this post.
  3. #15
    Join Date
    Sep 2007
    Location
    State College, PA
    Posts
    2,984
    Post Likes
    Quote Originally Posted by pecmsg View Post
    Pressures without temperatures are worthless!
    Agreed.
    Can someone please explain to me -
    Why is there never enough time to do it right the first time, but plenty of time to do it twice?


    Please view site rules: http://hvac-talk.com/vbb/showthread.php?t=1241

    Apply for Pro Membership: http://hvac-talk.com/vbb/showthread.php?t=116113

    Find your local HVAC-Talk Contractor: http://hvac-talk.com/aop

  4. #16
    Join Date
    Nov 2006
    Location
    Southeastern Pa
    Posts
    32,174
    Post Likes
    Quote Originally Posted by Snapperhead View Post
    Well lessseeee here

    Blower wheel was dirty , so the evap probly was too , and during a summer check someone added freeezy juice to bring up the low side

    Now winter is here and the thing is overcharged
    Ding ding ding.
    [Avatar photo from a Florida training accident. Everyone walked away.]
    2 Tim 3:16-17

    RSES CMS, HVAC Electrical Specialist
    Member, IAEI

    AOP Forum Rules:







  5. #17
    Join Date
    Nov 2019
    Location
    Jacksonville, Fl
    Posts
    6
    Post Likes
    This is a pretty straight forward call, but without any of the relevant information on hand you're probably not going to get the answer to it. You need the pressures at the liquid line service port and true suction port, ^T across drier, and temps on liquid and suction line all while running in heat.

  6. #18
    Join Date
    Mar 2015
    Location
    Medford, N.Y.
    Posts
    6,623
    Post Likes
    60/215 summer press does not sound good to me. 215 head KindaSorta sounds like a 78-80*F ambient. So a 60psi loside sounds low.

  7. #19
    Join Date
    Jan 2014
    Location
    New England
    Posts
    6,715
    Post Likes
    OK,OK,OK.. I think I got a piece of the puzzle figured out, used to be 30 degree over ambient in the 70’s and maybe 80’s? then convert to pressure, figure the 90’s its 20 degree over ambient? gives you a OD temperature of somewhere around 86 degree to get the posted 215 PSI head, is that correct OP? Was it at that OD temperature, please say that you checked the OD temperature..when you gave your readings. TP chart says 85 degree @ 211PSI

  8. #20
    Join Date
    Mar 2015
    Location
    Medford, N.Y.
    Posts
    6,623
    Post Likes
    Quote Originally Posted by Bazooka Joey View Post
    OK,OK,OK.. I think I got a piece of the puzzle figured out, used to be 30 degree over ambient in the 70s and maybe 80s? then convert to pressure, figure the 90s its 20 degree over ambient? gives you a OD temperature of somewhere around 86 degree to get the posted 215 PSI head, is that correct OP? Was it at that OD temperature, please say that you checked the OD temperature..when you gave your readings. TP chart says 85 degree @ 211PSI
    Not quiet. More along the lines of what RSES says about "What Head Pressures Are Supposed To Be" and also what Jim Bergmann says in the Testo Article "Air-Conditioning Applications Guide" concerning Head Press.

    All a Good Read!

  9. #21
    Join Date
    Jan 2014
    Location
    New England
    Posts
    6,715
    Post Likes
    Quote Originally Posted by TechmanTerry View Post
    Not quiet. More along the lines of what RSES says about "What Head Pressures Are Supposed To Be" and also what Jim Bergmann says in the Testo Article "Air-Conditioning Applications Guide" concerning Head Press.

    All a Good Read!
    That was somewhat of a joke, to a degree...., maybe I should have put this symbol afterwards

  10. #22
    Join Date
    Mar 2015
    Location
    Tx
    Posts
    1,419
    Post Likes
    Quote Originally Posted by pecmsg View Post
    If the blower wheel was dirty how was the amperage good?

    Super heat
    Sub Cooling #'s

    When was the last time this system was serviced?
    If the wheel is dirty, the evaporator coil is packed with crap too, usually.

Page 2 of 2 FirstFirst 12

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Contracting Business
HPAC Engineering
EC&M
CONTRACTOR