Page 2 of 2 FirstFirst 12
Results 14 to 24 of 24
  1. #14
    Join Date
    Aug 2012
    Location
    willowick ,oh
    Posts
    261
    I didn't hear anything about remote condenser anywhere in this thread. But I know that's true I used to take care of a few gas stations with reaching cools and freezers. No fun but pretty cut and dry usually

  2. #15
    Join Date
    Sep 2008
    Location
    Western PA
    Posts
    25,765
    Quote Originally Posted by Tommy knocker View Post
    Txv needs full column of liquid regardless of box temp. Full glass is not nessisarily full charge with receiver. Hot box and warm ambient charging to full glass will leave you grossly undercharged.
    I'll dispute that.

    I've not seen a system with a receiver that won't clear the glass once the unit has settled down and come close to temp, in fact, part of the charging instructions include the step "clear the sight glass"

  3. #16
    Join Date
    Jul 2012
    Location
    Western KY
    Posts
    1,221
    Quote Originally Posted by jpsmith1cm View Post
    I'll dispute that.

    I've not seen a system with a receiver that won't clear the glass once the unit has settled down and come close to temp, in fact, part of the charging instructions include the step "clear the sight glass"
    I think you miss read. I said a full glass doesn't mean a full charge with a receiver. Do you dispute that?

  4. #17
    Join Date
    Sep 2008
    Location
    Western PA
    Posts
    25,765
    Quote Originally Posted by Tommy knocker View Post
    I think you miss read. I said a full glass doesn't mean a full charge with a receiver. Do you dispute that?
    Maybe I did misread.

    No, a full sight glass is just the beginning of charging a system properly.

    I've repeated that advice hundreds of times.

  5. #18
    Join Date
    Jul 2012
    Location
    Western KY
    Posts
    1,221
    Quote Originally Posted by jpsmith1cm View Post
    Maybe I did misread.

    No, a full sight glass is just the beginning of charging a system properly.

    I've repeated that advice hundreds of times.
    Thank goodness. I thought you took up the crack pipe.

  6. #19
    Join Date
    Apr 2010
    Location
    Ontario
    Posts
    474
    Thanks for all your feed back.
    Not a pumpdown system.
    No suction to liquid line heat exhanger.
    Remote condensing unit. Not a self contained case.
    Got this quoted job from another guy. I replaced the compressor. 5 Lbs was reclaimed. I put 4 1/2 Lbs back in. Today I was later told the compressor was making noise before it quit. Now I'm glad I held back on the charge. If this wasn't quoted I'd want to go back to check a little deeper for compressor failure.
    ENJOY THE RIDE

  7. #20
    Join Date
    Feb 2008
    Location
    California
    Posts
    2,066
    I've seen a few larger Racks out there that won't clear the sight glass once settled down.

    Typically on systems with over sized liquid lines. And low liquid velocities.

    Laminar Flow...It's the Rivering Sight glass. You could fill the receiver to the max, and that glass wont clear.

    However, this is absolutely not what you are experiencing.

    charging a system with a receiver is all about receiver liquid level. You need enough liquid in the receiver to keep a level on your coldest day, there's calculations for this stuff.

  8. #21
    Join Date
    Feb 2006
    Location
    Phoenix,AZ
    Posts
    2,893
    Had some txv's stuck wide open and you couldn't clear the glass without flooding out the compressor!!!!

  9. #22
    Join Date
    Apr 2010
    Location
    Ontario
    Posts
    474
    I've seen sightglasses where it seems to just flow through. I had this one almost cleared. A little more gas would have done it.
    ENJOY THE RIDE

  10. #23
    Join Date
    Jan 2010
    Posts
    6,380
    So is the systems down or what ?

  11. #24
    Join Date
    Sep 2011
    Location
    Plainfield IL
    Posts
    101
    Be sure you pump down the system when your done adding freon to make sure your reciever is capable of holding the charge. Not doing this could cause you an unneccessary callback

Page 2 of 2 FirstFirst 12

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Comfortech Show Promo Image

Related Forums

Plumbing Talks | Contractor Magazine
Forums | Electrical Construction & Maintenance (EC&M) Magazine
Comfortech365 Virtual Event