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  1. Thread: TXV question

    by jdenyer
    Replies
    11
    Views
    1,562

    Ok got back to this unit this weekend, looked at...

    Ok got back to this unit this weekend, looked at condenser coil again, seemed a little dirty, checked discharge line temp, 233 degrees F, yikes a little high, cleaned the ever loving crap out of the...
  2. Thread: TXV question

    by jdenyer
    Replies
    11
    Views
    1,562

    Yes this is the same box, and I'm not "new" to...

    Yes this is the same box, and I'm not "new" to refrigeration, I probably do 3-4 of these type things with refrigeration a year, I just don't have a lot of experience with TXVs. And not doing a whole...
  3. Thread: TXV question

    by jdenyer
    Replies
    11
    Views
    1,562

    I don't have the model numbers in front of me at...

    I don't have the model numbers in front of me at the moment, but this is a walkin cooler running R409a, used to be R12. I know that the system is a match because it used to work great on R12. From my...
  4. Thread: TXV question

    by jdenyer
    Replies
    11
    Views
    1,562

    Ok guys, I'm a little rusty on TXV operation....

    Ok guys, I'm a little rusty on TXV operation. While I understand the basics, ie 3 balancing forces etc, which way do you turn the stem if you want the valve closed down some, I would assume...
  5. Replies
    13
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    1,434

    I did change the oil in the comp to AB, and yes I...

    I did change the oil in the comp to AB, and yes I did charge as a liquid. When I go back at the end of the week I will get some numbers for ya. Again thanks for the help, it really has me scratching...
  6. Replies
    13
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    1,434

    Thank you for the fast response. Ok I do realize...

    Thank you for the fast response. Ok I do realize that 409 runs a higher head. SH at SSV was 20 degrees, SC after drier was 2 degrees, if I try to bring the subcooling up by adding more gas my head...
  7. Replies
    13
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    1,434

    Ok, question for the refrigeration gurus here. I...

    Ok, question for the refrigeration gurus here. I have a walk in cooler that we just hooked up that is running R409a, TXV is the expansion device. This is a unit that's about 15 years old and used to...
  8. I believe Thermo-Pride has lifetime warranty on...

    I believe Thermo-Pride has lifetime warranty on the heat exchanger, I could be wrong though. Thermo-Prides are built like tanks. My mother has one that is heading for 30 years, still in great shape.
  9. Replies
    17
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    1,254

    Is the primary drain clogged? Are you sure? Use a...

    Is the primary drain clogged? Are you sure? Use a wet/dry shop vac to clear it out. Water only comes out of the secondary drain ie overflow when the main or primary drain is plugged. Hope this helps.
  10. Replies
    3
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    1,655

    I'd be calling the company that lost them and...

    I'd be calling the company that lost them and tell them they had better reappear, and soon:D
  11. Replies
    13
    Views
    1,660

    Dave, thanks for the response, I knew that I had...

    Dave, thanks for the response, I knew that I had read this could be done on small pot comps. This really is not an emergency as there is nothing in the cooler at this point. I will be meeting with...
  12. Replies
    13
    Views
    1,660

    I don't need to change the oil in the 404A unit...

    I don't need to change the oil in the 404A unit because they were actually smart enought to cap it, go figure. The condensing unit for the cooler is no spring chicken and would probably only last...
  13. Replies
    13
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    1,660

    Dave, I remember reading in a post a long...

    Dave,

    I remember reading in a post a long time ago that you can use an interim blend like MP39 with mineral oil in the comp if the system is small. Here's the situation, I'm re-installing a...
  14. Replies
    100
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    11,177

    Mark, you are the man, nice job. Glad to see this...

    Mark, you are the man, nice job. Glad to see this get straightened out.
  15. Hey I'm 2 for 2 today:D Oh well I still feel bad...

    Hey I'm 2 for 2 today:D Oh well I still feel bad for running my mouth without fully reading the post and my apology still stands.
  16. Oh my, I didn't read ericrocks post closely...

    Oh my, I didn't read ericrocks post closely enough and upon second glance see that he mentioned about the unit running longer. He was just trying to dis-prove a myth. My apologies to you. It wasn't...
  17. Keep in mind that as you lower the temp at the...

    Keep in mind that as you lower the temp at the condenser as caused by misting, the greater the superheat. You are doing this on a fixed metering device, so the only thing that you are really doing is...
  18. Replies
    6
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    746

    Well is this electrician licensed by the EPA to...

    Well is this electrician licensed by the EPA to handle refrigerants? Does he own a vacuum pump? So you are gonna do most of the install yourself and have a buddy of yours do the startup. Well I gave...
  19. Replies
    6
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    746

    First no pricing discussions are allowed per site...

    First no pricing discussions are allowed per site rules that you agreed to when you signed up. Second who is going to install this system that you bought off the internet. Are you EPA certified to...
  20. Replies
    6
    Views
    2,394

    Can't charge by pressures alone, systems using a...

    Can't charge by pressures alone, systems using a TXV are charged by subcooling. Let me explain why. The job of the TXV is to vary the amount of refrigerant into the evaporator to match the heat load...
  21. Replies
    11
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    903

    Please don't take this personally, but you should...

    Please don't take this personally, but you should not have tried to do this yourself. If you did fry something it's gonna cost you a lot more now to get it fixed than if you paid a tech to install...
  22. Replies
    100
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    11,177

    Excellent point Clark, I did not realize that...

    Excellent point Clark, I did not realize that Mark was in this guys area. Mark would get it diagnosed and fixed right for you. Without actually being there we are all just playing a guessing game. If...
  23. Replies
    100
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    11,177

    Ok just re read the entire thread and noticed you...

    Ok just re read the entire thread and noticed you mentioning that the return box was hot, you are either sucking in hot attic air thru a return duct leak, or their is a heatsource, ie furnace or...
  24. Replies
    100
    Views
    11,177

    Ok, the tech is saying that the Delta T across...

    Ok, the tech is saying that the Delta T across the coil is 19.5 degrees, this means that the system itself is probably working fine. Your problem at this point appears the be the ductwork, and is...
  25. Replies
    100
    Views
    11,177

    Still need pressures and temps though, your only...

    Still need pressures and temps though, your only looking at one side of the system and not the refrigeration side. You could replace all the duct work and still not have adequate cooling.
  26. Replies
    100
    Views
    11,177

    Ok, so the duct work seems messed up, but what...

    Ok, so the duct work seems messed up, but what about the pressures and temps I asked you for, can't go any further here without that info, it will tell us a lot about how the whole system is...
  27. Replies
    100
    Views
    11,177

    This guy had me right up until he said replace...

    This guy had me right up until he said replace system with a 5 ton unit. Did he do a load calc? What was the temp difference between the inlet of the plenum to the supply side? If not enough air was...
  28. Replies
    2
    Views
    680

    Listen to the advice of Dap1, the cause of no...

    Listen to the advice of Dap1, the cause of no cooling with high energy consumption could be many things, both minor and not so minor. Getting a good service tech in their to check things out will...
  29. Thread: saddle valve

    by jdenyer
    Replies
    9
    Views
    4,629

    I believe that bullet tap-a-line valves come in...

    I believe that bullet tap-a-line valves come in 1/2", but I hate using them, they often leak after a little while. I only use them on small fractional stuff that will be tossed in a year or two.
  30. Replies
    100
    Views
    11,177

    Yep, noncondensibles and moisture could definatly...

    Yep, noncondensibles and moisture could definatly cause the problem, but until we get some measurements taken by a real tech we are just gonna be playing guessing games. Mflesh, the ball is now in...
  31. Replies
    100
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    11,177

    Well since this is a new owner and they don't...

    Well since this is a new owner and they don't know the history of the system, and I'm assuming at 10 SEER that this is a fixed metering device. Wrong size piston maybe. Mflesh you really need to get...
  32. Thread: Bleach smell!!

    by jdenyer
    Replies
    21
    Views
    4,216

    Refrigerant breakdown is not going to happen...

    Refrigerant breakdown is not going to happen inside the system as there is no open flame, air or moisture, refrigerants can produce phosgene gas, hydrochloric acid, and hydroflouric acid in the...
  33. Oh my, well infrared is great for somethings, not...

    Oh my, well infrared is great for somethings, not for taking line temps on copper or other shiny metal surfaces, I use clamp on probes, much more accurate. You need another company to fix this thing...
  34. Davo, you are correct, I type faster than I think...

    Davo, you are correct, I type faster than I think sometimes:D Once I reread it I see that the statement makes no sense at all Thank you for pointing that out:) That being said I'm still bugged by the...
  35. In that case it sounds like the compressor is...

    In that case it sounds like the compressor is gone, the only thing that bugs me is that the liquid line temp is below ambient, so either the tech got the temp wrong, or some of that liquid in the...
  36. Replies
    6
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    2,394

    I would ask how the unit was charged. Sounds like...

    I would ask how the unit was charged. Sounds like he just used low side pressure to charge which is not good, but I wasn't there so I can't tell you how he charged the unit. TXV systems are charged...
  37. Ok lets assume that the info on the ticket is...

    Ok lets assume that the info on the ticket is correct. First what type of metering device is this? If a cap tube system then it likely sounds like an inefficent compressor except for the liquid line...
  38. Replies
    6
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    1,167

    Well they actually do make whole house electric...

    Well they actually do make whole house electric tankless heaters, but you would need to bring in a lot more juice to run it, you would probably never get a payback by the time you paid to have...
  39. Pressures mean nothing without line temperatures...

    Pressures mean nothing without line temperatures and a pressure temperature chart for the refrigerant being used. Saying you have a suction pressure of 68 means nothing unless you know the...
  40. How do you find the right company for you out of...

    How do you find the right company for you out of the dozens that are out there? By the way they act, that's how. Don't go by the fact that they are a xyz brand dealer since 1950, who cares about that...
  41. Let me get this right, he says you need a new...

    Let me get this right, he says you need a new system yet doesn't even check to make sure you have correct airflow and correct charge:mad: My thoughts are he doesn't even know how to use a set of...
  42. Replies
    3
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    512

    What part of Maine? I'm in Bath. Anyway, have you...

    What part of Maine? I'm in Bath. Anyway, have you thought about a tankless oil fired water heater? I have put a few of these in and people seem to love them. They are limited to 3-4 gallons per...
  43. Replies
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    11,177

    To use your analogy to medicine think of your...

    To use your analogy to medicine think of your problem this way. You wouldn't try to diagnose a patient without running some lab tests, the same holds true for your a/c. First establish that you are...
  44. Replies
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    4,427

    If it were me I would just get the compressor...

    If it were me I would just get the compressor replaced especially if it's under warranty. I have compressors still running in the field that I replaced 15 years ago. If there was a burn out and the...
  45. Replies
    5
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    1,087

    Re: VF?

    Couldn't agree more with you hearthman. Putting a heat exchanger into a vent free fireplace would likely cool the flame to the point of causing large amounts of CO to be produced. Don't do it! Also...
  46. My stove will pay for itself in 2-3 years with...

    My stove will pay for itself in 2-3 years with the current price gap between oil and pellets. I plan on being in my home for at least 20-30 years. I'm pretty sure I will be ahead of the game in that...
  47. I agree, we bought a pellet stove this fall and...

    I agree, we bought a pellet stove this fall and so far I haven't used much oil! Cost me less to run even with oil prices headed down.
  48. How bout a pellet stove? Load it up with a 40Lb...

    How bout a pellet stove? Load it up with a 40Lb bag of pellets and your good for a day or so. Very little ash, and can be turned back, yet still burn clean and efficient. Many more venting options...
  49. Replies
    6
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    767

    Think of electricity as someone doing work....

    Think of electricity as someone doing work. Single phase is like one person pounding a railroad spike into the ground, three phase is like having three people each taking a whack at the railroad...
  50. Thread: Mothballs

    by jdenyer
    Replies
    11
    Views
    915

    Ivory soap flakes work better, turns the gasoline...

    Ivory soap flakes work better, turns the gasoline to jelly, that's how they used to make napalm. Don't try this at home kiddies:D
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