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  1. Replies
    28
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    962

    Hmmm..........add a TXV and it possible could...

    Hmmm..........add a TXV and it possible could work. Have you ever done this Bill?
  2. Replies
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    962

    Interesting thought. Are you thinking at the...

    Interesting thought. Are you thinking at the inlet to the evap?
  3. Replies
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    184

    It's a 2 fan, 4fpi, 7800 btuh @ 10 TD, air...

    It's a 2 fan, 4fpi, 7800 btuh @ 10 TD, air defrost; if my memory is correct.

    Use:

    L-3/4 R134a
    L-1/2 R22
    L-1 R404a
  4. arnie, It's very common to design reach in...

    arnie,

    It's very common to design reach in equipment at a 15 to 20 TD. That way we can get more btuh capacity when there are limits on the size of an evap that will fit the box.
  5. Ice, Actually I used the condensing unit...

    Ice,

    Actually I used the condensing unit capacity for a: F3AD-A151-CFV which uses the CR18 compressor and includes 5 F subcooling. I never use A/C ratings for commercial refrigeration.
  6. Thread: Copeland K body

    by powell
    Replies
    19
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    462

    You got it BBeerme, they don't approve squat. ...

    You got it BBeerme, they don't approve squat.

    http://www.hvacrinfo.com/cope_ae_bulletins/TAE1282.PDF
  7. Thread: Copeland K body

    by powell
    Replies
    19
    Views
    462

    Here's a paragraph from Copelands AE bulletin. ...

    Here's a paragraph from Copelands AE bulletin.

    http://www.hvacrinfo.com/cope_ae_bulletins/TAE1260.PDF

    "There are different opinions in the industry on oil
    sump temperatures. The viscosity of...
  8. It's a 3 fan ceiling mounted reach in evap rated...

    It's a 3 fan ceiling mounted reach in evap rated at 6100 btuh @10 TD.

    Matched with a CR18KQ (R22) pumping 10800 btuh @ +20 SST @ 90 ambient it would be designed for a 38F box with a 17.7 TD.
  9. Replies
    4
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    226

    The only difference between the "K2E" and the...

    The only difference between the "K2E" and the "K2" is the oil. The "K2E" has POE oil.

    If the system has R12 then you will have oil return problems.
  10. Replies
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    262

    Check out this Tecumseh website. Andy wrote a...

    Check out this Tecumseh website. Andy wrote a great pipe sizing program

    http://boxload.tecumseh.com
  11. Replies
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    904

    The "K" bodies are used in dental offices but...

    The "K" bodies are used in dental offices but have a slightly different model number (the fourth character is 4, KAT4) because the crankcase doesn't have a passageway to the head. (keeps the oil...
  12. Replies
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    520

    There's no problem with applying a coating to...

    There's no problem with applying a coating to walk-in evaps. One can even order the evap from the factory with a coating, it just takes 3-4 weeks to get it. If you want to coat an evap in the field...
  13. Thread: Walk in cooler

    by powell
    Replies
    13
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    1,007

    What's your question KHR?

    What's your question KHR?
  14. Replies
    27
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    1,144

    You need to check the wrist pins. If you don't...

    You need to check the wrist pins. If you don't see any evidence of heat such as nasty burnt oil then the rod could have busted due to a liquid slug.

    If you want to buy parts check out...
  15. Replies
    27
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    1,144

    Here's some slop pictures out of an air-cooled...

    Here's some slop pictures out of an air-cooled Copeland.
  16. Replies
    27
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    1,144

    If you do this be careful! If the rod is broken...

    If you do this be careful! If the rod is broken the piston will shoot up out of the compressor.:eek2:
  17. Replies
    27
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    1,144

    It's pretty much condemed having 1/2" slop in the...

    It's pretty much condemed having 1/2" slop in the piston.
  18. Replies
    27
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    1,144

    Thor, Those pressures listed on the name plate...

    Thor,

    Those pressures listed on the name plate are test pressures, not system running pressures.
  19. Replies
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    1,144

    I also question why it has a CPR valve. Most...

    I also question why it has a CPR valve. Most R404A compressors don't require one. Was this a conversion from R12?
  20. Replies
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    1,144

    A half inch slag is a lot, but not intirely...

    A half inch slag is a lot, but not intirely impossible. I doubt the rod is still connected to crank.

    A busted discharge valve would have caused the wrist pin to wear.

    If you end up...
  21. Replies
    5
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    567

    ar_hvac_man Check out this older link in...

    ar_hvac_man

    Check out this older link in H-Talk.

    http://hvac-talk.com/vbb/showthread.php?728021-Oil-sight-glass-leak

    Also, I can't connect a leak at the sight glass to power outages or...
  22. Replies
    13
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    545

    The "J" family compressor was discontinued, as...

    The "J" family compressor was discontinued, as Icemeister noted, years ago. To be exact it was April 2000 (abt 14 years ago). You were very lucky to find one. I haven't sold one since about 2004.
    ...
  23. Replies
    19
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    807

    For a typical 4 drawer under counter refrigerator...

    For a typical 4 drawer under counter refrigerator I think the 1/2 hp system is oversized. Added to that, you're gaining about 35% btuh capacity at a 50 degree ambient versus a 110 ambient. The LPC...
  24. Replies
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    1,324

    Compression ratios get too high. ...

    Compression ratios get too high.

    http://www.hvacrinfo.com/cope_ae_bulletins/TAE1268.PDF
  25. Replies
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    703

    It should have the L-1/3 nozzle for R22.

    It should have the L-1/3 nozzle for R22.
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