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  1. Thread: PTC issue

    by trippintl0
    Replies
    26
    Views
    1,080

    Thermomister, I've wired tons of small tecumseh...

    Thermomister, I've wired tons of small tecumseh compressors. Every one I've seen has start terminal on left, run on right, common on top. Your pic had start and run swapped. Maybe that's the...
  2. Replies
    29
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    2,735

    20# cutout is about a 23*f coil. That seems like...

    20# cutout is about a 23*f coil. That seems like a little high. If the box is already down to 34*f at that time then that concerns me. That would be where most units run once they cycle on at 40. ...
  3. Replies
    79
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    5,535

    Ummm, you did check the txv strainer, correct?

    Ummm, you did check the txv strainer, correct?
  4. Replies
    79
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    5,535

    I'm only 31, hope I have more than 9 years left

    I'm only 31, hope I have more than 9 years left
  5. Replies
    20
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    1,380

    If you ever look at equipment BTU charts to...

    If you ever look at equipment BTU charts to select new equipment, you'll see that the condensing unit BTU capacity changes rather drastically as the outdoor ambient rises. For example, say your box...
  6. Replies
    28
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    1,297

    If co2 won't blow it out, I get out the NuBrite...

    If co2 won't blow it out, I get out the NuBrite and water hose
  7. [emoji4] I think you are probably right, and...

    [emoji4] I think you are probably right, and that's a pretty intelligent diagnosis to think of when you aren't even there. Wish my company had more techs like you!

    It's funny, in the last two...
  8. Pictures would help.

    Pictures would help.
  9. Replies
    23
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    1,054

    Not sure if somebody already mentioned it or not,...

    Not sure if somebody already mentioned it or not, but the underlying issue with using a "ZP" powerhead on a W/I Cooler is the fact that it is a low-temp powerhead on a medium temp application. Using...
  10. Replies
    69
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    2,363

    Almost all manufacturers will give you the cap...

    Almost all manufacturers will give you the cap tube specs that the unit was designed for if you call them.

    Alternatively you can use the cap tube sizing calculator online, just Google to find the...
  11. Replies
    69
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    2,363

    Good job admitting your high side didn't push in...

    Good job admitting your high side didn't push in the valve core. If you changed the cap tube and still running in a vacuum, then most likely 1) you filled something with solder. Or 2) you...
  12. Was just rereading this and noticed you said that...

    Was just rereading this and noticed you said that when the EPR was set to 50 then the cold rails stopped working. I'm betting that the designer intended for all the cold rails to be on the main...
  13. Replies
    69
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    2,363

    This just happened to me last week. I blew a...

    This just happened to me last week. I blew a hole in the copper line and filled it back in with silfoss... and I filled it 100% and sealed the line right before the drier. I was checking head...
  14. Replies
    9
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    776

    I tried to convince my boss to let me pipe in...

    I tried to convince my boss to let me pipe in water lines with a water solenoid wired to the timer to deice a problematic unit, but he would have none of it. I still think it was a genius plan.
  15. Replies
    6
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    1,917

    Thanks Mike and merry Christmas to you Sent...

    Thanks Mike and merry Christmas to you


    Sent from my iPhone using Tapatalk
  16. Replies
    6
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    1,917

    Honestly that'd be much preferred to let a real...

    Honestly that'd be much preferred to let a real plumber do the drain. My boss just said to so whatever it takes to fix it since we had just installed it and the drain was leaking, so I basically...
  17. Replies
    6
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    1,917

    It's not what you do, it's how you do it

    I take pride in my work even if it seems trivial.

    539021 plumbing a drain on an ice cream dip freezer scoop sink

    539031installed new door frame heater and custom aluminum treadplate threshold...
  18. Im not saying compressor is pumping...

    Im not saying compressor is pumping inefficiently. Rather, the scroll or internal bypass mechanism is weak. So if there is too much pressure differential from high to low side, it opens...
  19. I've seen scroll compressors do this where they...

    I've seen scroll compressors do this where they get weak and will internally bypass when suction gets too low and head gets too high. I think you are going to have to replace compressor.

    If it...
  20. Replies
    20
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    1,310

    Genius. I also worked on one Hobart RIF single...

    Genius. I also worked on one Hobart RIF single door unit. Same cap tube specs. Same RS4? copeland compressor. Same 10psi after repair. I could find no other reason other than incorrectly sized...
  21. Home depot. Com has for sale right now $59.99...

    Home depot. Com has for sale right now $59.99 online only with free shipping. I just ordered one to replace my busted Veto LC.
  22. http://www.whitetrashpeople.com/wp-content/uploads...

    http://www.whitetrashpeople.com/wp-content/uploads/2009/09/red_neck_car.jpg

    sorry i couldn't resist :grin2:
  23. By deenergizing liquid line defrost solenoid AND...

    By deenergizing liquid line defrost solenoid AND contactor simultaneously, you still prevent pressures from equalizing during defrost without having to pump the whole charge into the receiver during...
  24. Installing a larger receiver is a good solution...

    Installing a larger receiver is a good solution IF you have enough physical room for it, and IF customer would rather spend hundreds and hundreds of dollars to do it right, when just rewiring it is...
  25. Just wire contactor to shut off with defrost...

    Just wire contactor to shut off with defrost solenoid. Then charge it up.
  26. Replies
    32
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    1,293

    Oh yeah, that suction service valve tho :eek: ...

    Oh yeah, that suction service valve tho :eek: might be a good preventative measure to go ahead and cut it out and hard pipe in. Just add a Schrader access valve somewhere. I mean you could...
  27. Replies
    32
    Views
    1,293

    Wow. No kidding about the txv braze joints being...

    Wow. No kidding about the txv braze joints being bad!

    Looks really nice. It appears condenser is unnecessarily close to the wall which may make cleaning it difficult, that's the only thing I...
  28. NICE i am going to use this line!

    NICE i am going to use this line!
  29. Sorry just trying to be funny, no offense...

    Sorry just trying to be funny, no offense intended :) low suction is typically associated with low on charge or restriction.
  30. media.townhall.com/townhall/reu/ha/2013/311/a57b18...

    media.townhall.com/townhall/reu/ha/2013/311/a57b18a5-155c-4a9a-8bc6-00f1d51ccf51.jpg
  31. Replies
    16
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    1,224

    Maybe you're thinking Delfield and Manitowoc. ...

    Maybe you're thinking Delfield and Manitowoc. Manitowoc owns a lot of companies.
  32. Good job!

    Good job!
  33. I just worked on Traulsen passthru with 8 half...

    I just worked on Traulsen passthru with 8 half doors and it had a 1/2hp :shrug:
  34. Box may have been designed to run at 45*f being...

    Box may have been designed to run at 45*f being so old. Maybe that's why it only used a 1/3hp. I would have gone back with a 1/2hp preferably with receiver, and a TXV.

    The compressor you got is...
  35. Replies
    16
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    1,224

    Actually the manual calls for 45# suction with...

    Actually the manual calls for 45# suction with box at 35 degrees F. So it may not be - that - far off.

    Common issues I've seen on these models is poor airflow, wrong evap fan blade, the louvers...
  36. COULD BE BAD MOTORS

    COULD BE BAD MOTORS
  37. Replies
    17
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    1,207

    I don't work on supermarket racks. But on a few...

    I don't work on supermarket racks. But on a few parallel racks I've seen where you have a 10hp, then 15hp, then 20hp, it will short cycle a bigger compressor if the smallest compressor isn't...
  38. Replies
    8
    Views
    577

    Sounds like txv working ok to me. Are all...

    Sounds like txv working ok to me. Are all circuits in the evaporator frosting or just a few? That could cause coil to partially freeze up.

    Assuming entire coil is feeding properly, the 2 to 10...
  39. Replies
    71
    Views
    2,718

    Yes that makes sense. Sounds more like a...

    Yes that makes sense. Sounds more like a potential issue of slugging at start up rather than flooding while running. Makes sense, thanks for the clarification!
  40. Replies
    71
    Views
    2,718

    Good point, never even crossed my mind. Might a...

    Good point, never even crossed my mind. Might a crankcase heater be beneficial in this scenario?
  41. Replies
    71
    Views
    2,718

    Hmmmm... I don't think I would've done it like...

    Hmmmm... I don't think I would've done it like that, you always want liquid moving downhill through condenser... but I guess if it works, it works?
  42. Replies
    71
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    2,718

    AWESOME.

    AWESOME.
  43. Replies
    71
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    2,718

    Ice, your testimony gives me confidence to start...

    Ice, your testimony gives me confidence to start using the cap tube sizing program. Actually makes me want to double check a lot of manufacturers specs too!

    PHM: I agree with you 100 percent. ...
  44. Replies
    71
    Views
    2,718

    txv... txv... txv... :) I love this kind of...

    txv... txv... txv... :) I love this kind of project, I envy you right now. But I'm worried, just visualizing in a week hearing you say "compressor too hot, too much superheat, had to shorten the...
  45. Replies
    71
    Views
    2,718

    Every evaporator I've ever seen feeds into the...

    Every evaporator I've ever seen feeds into the inside layer, then the outside layer that the return air hits is piped to suction header.

    In addition, water cooled condensers are also piped cross...
  46. Replies
    71
    Views
    2,718

    If there's one thing you REALLY need to do right,...

    If there's one thing you REALLY need to do right, it's sizing the cap tube. Guessing is not going to cut it. You could always just throw in a txv, too.
  47. Replies
    71
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    2,718

    When the ambient air is pulled in to the coil it...

    When the ambient air is pulled in to the coil it is at say 80*f. After passing through let's say it's at 100*f. So if the discharge gas is at 120*f then it can still transfer heat with 100*f air. ...
  48. Replies
    71
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    2,718

    Coldest air should hit coldest refrigerant. So...

    Coldest air should hit coldest refrigerant. So it should start with back coil, then run through front coil. That's how multi layer coils are usually piped
  49. Replies
    71
    Views
    2,718

    I'd redo it so you feed the original coil first,...

    I'd redo it so you feed the original coil first, then out of that coil into the new front coil.

    Would be even better if you could put them side by side with fans on each.
  50. Replies
    33
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    4,439

    I can tell you what's going on, the tech made a...

    I can tell you what's going on, the tech made a good effort by replacing the condensing unit on an old Traulsen, but he failed by not converting it to TXV, and he should have also cut out hot gas...
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