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  1. #1
    Join Date
    May 2004
    Location
    Plattsburgh NY
    Posts
    176

    Hmm

    Hey everyone, I don't post much but I have been watching for a while. I thoght maybe I could gain some insight. I did a leak check on a Ducane split yesterday and had a hard time recharging the system, just couldnt seem to clear the glass. I tried the usual by putting jug of 22 in bucket of hot water, and gave up after a few hours, and I guess I'm going to go back on a warm day to top charge off. Is there any tips or tricks you guys want to donate? Any advice would be greatly appreciated.

  2. #2
    Join Date
    Jul 2002
    Location
    St Paul, Minnesota
    Posts
    3,468
    What was the ambient?

  3. #3
    Join Date
    Nov 2001
    Posts
    1,874
    did you find the leak ?
    If you try to fail, and succeed.
    Which have you done ?



  4. #4
    Join Date
    May 2000
    Location
    Urbandale IA. USA
    Posts
    4,927
    Weigh it in!
    The Model tag should tell you where to start.

    Check the superheat and subcooling!

    Was this high efficiency (12 SEER or higher)?
    TXV or piston?


  5. #5
    Join Date
    Apr 2004
    Posts
    7,680
    Unless it was too cold to put the refrigerant in, I'm thinking its overcharged now. Paint over the sight glass, you dont want to use that on residential stuff.

  6. #6
    Join Date
    May 2004
    Location
    Plattsburgh NY
    Posts
    176
    Outside ambient was about 55F, I've got a 30 degree deltaT across indoor coil, in at 70 out at 40, suction press. 35 discharge press. 115, suction temp at comp. 50 degree, these are approx. readings from my recollection 2 days ago. So I'm pretty sure I'm undercharged. Just looking for some tips and tricks to move r-22 into unit at low ambient temp.

  7. #7

    gotta...

    Gotta get that head pressure up...try wrapping a tarp or sheet of plastic around the condenser

  8. #8
    Join Date
    May 2004
    Location
    Plattsburgh NY
    Posts
    176
    Now there is a possible answer I am looking for. Air mechanix, so your saying by driving the head press. up this will help move refrigerant into system at low ambient?

  9. #9
    Join Date
    Dec 2002
    Location
    Houston,Tx.
    Posts
    15,970
    Originally posted by docholiday
    Paint over the sight glass, you dont want to use that on residential stuff.
    What color Doc?
    __________________________________________________ _______________________
    “Experience is a hard teacher because she gives the test first, the lesson afterwards". - Vernon Law

    "Never let success go to your head, and never let failure go to your heart". - Unknown

  10. #10
    Join Date
    May 2000
    Location
    Indianapolis, IN, USA
    Posts
    34,103
    30 degree drop? You ain't movin' much air! Do the customer a favor, go back on a warm day. Wrapping the coil simulates a warmer day but most charging charts ask outdoor temp. What is "outdoor temp" on a 55 degree day with plastic around the coil? If charging a piston system properly, you need indoor wet bulb. In cool weather, so low it is off the chart.

  11. #11
    Join Date
    Sep 2004
    Location
    Glendale AZ
    Posts
    299
    Edit


    [Edited by danj on 04-06-2005 at 09:16 PM]
    The bitterness of poor quality remains long after the sweetness of low price has gone.

  12. #12
    Join Date
    May 2004
    Location
    Plattsburgh NY
    Posts
    176
    Thanks bald loonie. Waiting for warm day. and as for the above statement about painting the sight glass on residential stuff, what do you suppose he's talking about, we all know superheat says it all.

  13. #13
    Join Date
    Feb 2004
    Location
    southern illinois
    Posts
    5,522
    we don't charge until 70 outdoor,....but i do remeber last year on here they were talking about tents or maybe turkey blinds or something to go over condenser.

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