Page 2 of 2 FirstFirst 12
Results 14 to 21 of 21
  1. #14
    Join Date
    Apr 2002
    Location
    Dallas, TX
    Posts
    2,987
    Originally posted by freezerfixer
    i was talking to a friend of mine that works for another service company the other day about superheat and he said "I have never had to check superheat like you do."
    i think he is more of a "beer can cold" kind of guy. [/B]
    If he drinks enough beer and has good sensitivity to temperature, he may do ok

  2. #15
    Join Date
    Mar 2006
    Location
    OKC, Oklahoma
    Posts
    61

    Smile

    Originally posted by Andy Schoen
    Originally posted by freezerfixer
    i was talking to a friend of mine that works for another service company the other day about superheat and he said "I have never had to check superheat like you do."
    i think he is more of a "beer can cold" kind of guy.
    If he drinks enough beer and has good sensitivity to temperature, he may do ok [/B]

    hahaha you might be right! theres only one way to practice.....drink more cold beer!

  3. #16
    Join Date
    Apr 2005
    Location
    Central Indy
    Posts
    153
    What about your charge? If your were low on gas, and the box had a big load on it, wouln't that cause the txv to hunt? I've worked on units that do fine until you put a load on them, just a thought.

  4. #17
    Join Date
    Mar 2006
    Location
    OKC, Oklahoma
    Posts
    61
    Originally posted by hvacmike33
    What about your charge? If your were low on gas, and the box had a big load on it, wouln't that cause the txv to hunt? I've worked on units that do fine until you put a load on them, just a thought.

    in a low charge situation,your valve would probably be wide open trying to keep up with the load. the liquid refrigerant would be boiling off to a vapor really quick and the sensing bulb wouldn't get cold....valve continues to stay open.
    also, i wouldn't think that you would be able to flood the evap. with liquid if there wasn't a solid column of liquid coming to the TXV. depends on how low the charge was.

  5. #18
    Join Date
    Jul 2001
    Location
    Gold Coast of Connecticut
    Posts
    4,578
    Originally posted by freezerfixer
    sounds like the valve is oversized. I replaced one the other day and misread the model number of the coil and put in too big of a cartridge. (sporlan "Q" body valve kit)
    the valve could never find its happy spot.
    my superheat would be 20 degrees and then the valve would open up and drop to no superheat at all within seconds.

    anytime i build a valve, if i am between two sizes of orfices, lets say a 1 1/2 or 2 ton, i always go with the smaller size.
    i may have to open the valve a little, but at least I'll have a more consistant superheat.
    Very good point, a to large of a valve will work bad. Also a dirty coil will cause the same!

  6. #19
    Join Date
    Jul 2003
    Location
    ALABAMA
    Posts
    230
    I agree here with checking the size of that valve. I have only had to adjust the SH on several TXV mostly on the new refrigerants used now. The TXV is very reliable device.
    I have a buddy that works for sporlan and he always tells me that adjusting the SH is a last thing to do.

  7. #20
    Hey everyone !! im new to the website . hope all is well with everyone . got a problem . my compressor has ice on the body .( 404A W/I Freezer) after reading some of your replies, i need to understand how to correctly adjust my supperheat . i made some adjustments to the txv. got the system down to -4 degrees everyone happy .except for me cause my sight glass was not full . i added more 404 made another adjustment now my compressor is iceing up! and they loaded the W/I for the weekend (40x60)big box! im worried im hurting the compressor.

  8. #21
    Join Date
    May 2000
    Location
    Monmouth Junction-NJ-USA
    Posts
    6,001
    Quote Originally Posted by OntimeJ View Post
    Hey everyone !! im new to the website . hope all is well with everyone . got a problem . my compressor has ice on the body .( 404A W/I Freezer) after reading some of your replies, i need to understand how to correctly adjust my supperheat . i made some adjustments to the txv. got the system down to -4 degrees everyone happy .except for me cause my sight glass was not full . i added more 404 made another adjustment now my compressor is iceing up! and they loaded the W/I for the weekend (40x60)big box! im worried im hurting the compressor.
    You should be very worried about hurting that compressor.
    Open to much and you will be slugging the compressor with liquid and BAMMM. The comressor is built to compress Vapor Liquid. I surely would not attempt to perform brain surgery unless I knew what made it tick.
    Here is a link that might be helpful. Are you a tech or and end user??

    http://hvac-talk.com/vbb/showthread.php?t=80383
    If you really know how it works, you have an execellent chance of fixin' er up!

    Tomorrow is promised to no one...

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