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  1. Replies
    28
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    1,507

    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
    28
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    1,507

    Interesting thought. Are you thinking at the...

    Interesting thought. Are you thinking at the inlet to the evap?
  3. Replies
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    318

    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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    754

    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
    754

    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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    357

    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
    2
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    365

    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
    16
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    1,186

    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
    7
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    682

    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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    1,280

    What's your question KHR?

    What's your question KHR?
  14. Replies
    27
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    1,504

    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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    1,504

    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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    1,504

    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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    1,504

    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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    1,504

    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
    27
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    1,504

    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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    1,504

    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
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    734

    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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    741

    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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    990

    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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    1,654

    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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    834

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

    It should have the L-1/3 nozzle for R22.
  26. Replies
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    834

    The condensing unit model number is:...

    The condensing unit model number is:
    AKA9461EXDXC
    R22
    6900 BTUH @ +25 sst @ 90 AMBIENT

    You have a matched system. I would have used the ADT065 but your still good.

    There must be other...
  27. The 90-150 (EAB-0150) is a MT12/LT502 compressor...

    The 90-150 (EAB-0150) is a MT12/LT502 compressor as I stated but the LT502 use is an alternative application for which I cannot find any btuh specs.

    Based on it's CFH and the S.W.A.G theory I...
  28. Is this a Copeland semi-hermetic compressor? If...

    Is this a Copeland semi-hermetic compressor? If so it is from the 60's with that part number 90-150. The current compressor number is an EAB?-015A-??? which is a MT12 or LT502 compressor.
  29. Replies
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    1,804

    I posted this today in the memorial section....

    I posted this today in the memorial section. Marvin has passed on.

    http://hvac-talk.com/vbb/showthread.php?1266331-Marvin-Greene-has-passed
  30. Replies
    13
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    3,215

    Marvin Greene has passed

    Marvin Greene "Marvin" passed away last night here in Las Vegas.

    At this time I do not know the cause of death.

    I always enjoyed talking with him on the counter or phone. He was an excellent...
  31. Replies
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    1,954

    This is a true statement because the air is not...

    This is a true statement because the air is not blown directly on unwrapped produce or flowers. But, a low velocity evap is about twice the cost versus a regular evap. This is the reason (as one...
  32. There's just one little problem, the...

    There's just one little problem, the ERF2-0310-CAB is a H22/M502 compressor. It's not rated for R12.:whistle:
  33. Thread: walk in rebuild

    by powell
    Replies
    5
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    1,061

    The model of the box doesn't help. Give us the...

    The model of the box doesn't help. Give us the compressor model number and the evaporator model number.
  34. After a few years the liquid line will leak due...

    After a few years the liquid line will leak due to it rubbing together. I repaired quite a few of these in the 80's in Atlanta.
  35. Replies
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    3,992

    Ah, it uses the "Moduload" type unloader. It...

    Ah, it uses the "Moduload" type unloader. It unloads based on compression ratio. It will be easier for you to understand if you read the AE bulletin from Copeland.

    Here's the link
    ...
  36. Replies
    37
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    3,992

    Is it a single head compressor, 3D model?

    Is it a single head compressor, 3D model?
  37. Replies
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    3,623

    Compressor model numbers are required for us to...

    Compressor model numbers are required for us to help you.:yes:
  38. Replies
    21
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    2,953

    Glad I could help. It is very similar to the...

    Glad I could help.

    It is very similar to the LAHA-031A-TAC
  39. Replies
    11
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    1,312

    I doubt there is no water regulating vlaves,...

    I doubt there is no water regulating vlaves, unless someone screwed up. It's not about EWT, it's about head pressure.
  40. Replies
    11
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    1,312

    [QUOTE=VTP99;13684631] K and E bodies

    K and E bodies
  41. Replies
    4
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    1,600

    Hey! That aint duct tape!

    Hey! That aint duct tape!
  42. Thread: Redneck A/C

    by powell
    Replies
    3
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    836

    It's a dry heat out here in the desert.

    It's a dry heat out here in the desert.
  43. Thread: internal bypass

    by powell
    Replies
    13
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    1,702

    Air in the system, low side leak.:.02:

    Air in the system, low side leak.:.02:
  44. Replies
    15
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    2,016

    I agree with you. I don't like to go less on the...

    I agree with you. I don't like to go less on the BtuH unless I know the design of the system.
  45. Replies
    15
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    2,016

    Here's another possibility: Copeland has...

    Here's another possibility:

    Copeland has consolidated many of their CR models and the CR26 does cross to a CR24. The difference is about a nominal 2000 (8%) BtuH loss in capacity.

    If the...
  46. Replies
    62
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    5,470

    My condolences to you Robin. My mother...

    My condolences to you Robin.

    My mother passed about 6 years ago from Alzheimer’s. I remember sitting with her near the end while we watched TV. We were watching a music channel where we played...
  47. Replies
    10
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    1,668

    He is incorrect. You want to measure the liquid...

    He is incorrect. You want to measure the liquid line pressure/temp to get subcooling. The term "discharge pressure (compressor hot gas line)" is sometimes referred to as the liquid line pressure in...
  48. Replies
    4
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    876

    uni, As Mikey stated, get the model and serial...

    uni,

    As Mikey stated, get the model and serial number of the compressor. Measure the condenser coil, get the FPI, rows and tube size. Also state the number of fans and get any numbers at all...
  49. Replies
    13
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    1,777

    Miami has a good Copeland supply house, just find...

    Miami has a good Copeland supply house, just find the seasoned help who learned by looking in catalogs, not the web.

    Or come see me.
  50. Replies
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    1,777

    OK, Let's assume the original compressor was...

    OK,

    Let's assume the original compressor was a:

    LAC1-0310-CAB or LACA-031A-CAB
    MT12
    LT502

    It does cross to a LACB-032E-CAB
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