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Type: Posts; User: craig1

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  1. Replies
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    293

    It's just a port for the temp probe of the liquid...

    It's just a port for the temp probe of the liquid injection valve, not really a hole.

    When the compressor temp gets too hot, the liquid injection valve feeds some liquid to cool it off
  2. Replies
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    585221

    585221
  3. Replies
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    751

    Did lennox ever make their own compressors? I've...

    Did lennox ever make their own compressors? I've never seen a Lennox branded compressor. The only manufacturers I know of that made their own compressors where Trane, Carrier, Chrysler, and maybe...
  4. The factory controls will protect the compressor...

    The factory controls will protect the compressor just fine. Since you say it has a TXV, the txv will prevent floodback.

    The MAJORITY of automotive compressor failures are due to running with...
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    270

    The first thing I would do is not violate the...

    The first thing I would do is not violate the rules by posting prices.


    Then the second thing I would do is have the ductless system of your choice installed, but DO NOT remove the radiators. ...
  6. Replies
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    441

    For my customers I estimate it breaks down like...

    For my customers I estimate it breaks down like this

    Residential
    90% r22
    10% r410a
    And one r12 unit

    Commercial
    98% r22
    2% r410a
  7. Replies
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    2,038

    All modern consensers pull air through the coil. ...

    All modern consensers pull air through the coil. This gives a much more even airflow when the blade is close to the condenser.
  8. When I'm on the roof of my largest restaurant...

    When I'm on the roof of my largest restaurant customer, I can see PartsTown. I laugh when I call in an order from the kitchen, drive over there, and give the warehouse guy my order number and...
  9. Its a very busy and loud kitchen. I didn't...

    Its a very busy and loud kitchen. I didn't notice anything out of the ordinary except that it was very hot, until I took it to another room to work on it, plugged it in, and heard it humming.
  10. Replies
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    378

    I'm come nfused.... Of course your evap is going...

    I'm come nfused.... Of course your evap is going to freeze if you're running a 20 degree evap temp. That's what the off cycle is for, so it can defrost. What type of control is regulating the...
  11. yes, it works fine. in fact after I tapped on...

    yes, it works fine. in fact after I tapped on the relay, that worked fine too, but I know it will stick again.
  12. Mircrowave ran with nothing in it for a week

    Like the post says, this commercial Amana ran with nothing in it for a week. The relay on the board welded on, and the only thing stopping it was the door interlocks and the high temp limits.

    The...
  13. Replies
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    995

    That would drive me crazy. I've seen you post...

    That would drive me crazy. I've seen you post about this often, so I assume you work for a lot of large/national accounts? are they pretty much all like that?

    I do alot of independent food...
  14. Thread: seriously

    by craig1
    Replies
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    1,423

    Twice I've removed a coil from above the furnace,...

    Twice I've removed a coil from above the furnace, put it on the basement floor in a plastic tub and washed it with chemicals, all without cutting the lines. It's pretty rare to have enough give in...
  15. Replies
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    414

    The overload is at the center of a wye connected...

    The overload is at the center of a wye connected motor winding configuration.
  16. Replies
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    417

    I really like hotshot2, but you say your supply...

    I really like hotshot2, but you say your supply house doesn't have it. Maybe you should suggest they ditch the old hotshot and switch to 2. I would suspect they're gonna quit making the regular...
  17. I saw that too

    I saw that too
  18. Replies
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    1,312

    I have one and its awesome. I'm not sure how...

    I have one and its awesome. I'm not sure how accurate it is, but its precision is good enough that you can put it in front of a register take a reading, pull out the customer's 3m furnace killer...
  19. Replies
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    437

    65 psi r-22 is like 38 degrees. The pressure in...

    65 psi r-22 is like 38 degrees. The pressure in the coil cannot rise above 65 until the coil is above 38. You need a switch with a lower cut in, like 40
  20. Replies
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    1,422

    X2 Your condensing temperature is what affects...

    X2

    Your condensing temperature is what affects the supply air temp of the heat pump. The refrigerant discharge temperature has negligible effect in it.
  21. Replies
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    947

    Wonder if they offered a bolt on resonant...

    Wonder if they offered a bolt on resonant frequency eliminator kit for this bridge?

    https://m.youtube.com/watch?v=j-zczJXSxnw
  22. I'm pretty sure dental status is not a protected...

    I'm pretty sure dental status is not a protected class. That being said, I don't think the person making hiring decisions would actually say their decision was based on the teeth. They would say...
  23. Replies
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    947

    some manufacturer had a service bulletin and kit...

    some manufacturer had a service bulletin and kit for exactly that situation.
  24. what was your suction pressure? The TXV was most...

    what was your suction pressure? The TXV was most likely the pressure limiting type, so if your suction pressure is approaching the limiting point, your superheat will be high and you should not...
  25. It starts out that way, but in my experience,...

    It starts out that way, but in my experience, once you get "on the good side" with the Asian customers, its no longer a problem.

    I do a bunch of work for a major asian food wholesaler in my area...
  26. What gas is in it? What is actually shutting it...

    What gas is in it? What is actually shutting it off, there's no head temp sensor
  27. Replies
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    8,097

    I recently fixed a lobster tank that had a 12...

    I recently fixed a lobster tank that had a 12 valve on a 404 system. This is the same scenario, a high pressure gas on a low pressure valve, the symptoms were a severely starving evaporator. I...
  28. Replies
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    845

    I believe most of the scrolls used in the larger...

    I believe most of the scrolls used in the larger condensers are dual rated for low/med temp so there is no need to limit load during pull down.

    It sounds like the cause of damage is the inability...
  29. Replies
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    746

    Its a cooler manufacturer, not a facilities...

    Its a cooler manufacturer, not a facilities management company.

    I would never even consider doing warranty work for a Canadian company. I always hear about "our friendly neighbors to the North"...
  30. Replies
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    How much stuff is inside? These are meant to be...

    How much stuff is inside? These are meant to be full. They will not control temp properly if less then half full of product.
  31. The most plentiful furnace in my scrap pile is...

    The most plentiful furnace in my scrap pile is Carrier, just because they sold so many of them. The most plentiful A/C in my pile is Trane due to the condenser coil leaks in late 90's models.
    ...
  32. Replies
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    How big are these coolers?

    How big are these coolers?
  33. Replies
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    995

    I think he was asking "why the double carb...

    I think he was asking "why the double carb adapters" The reason for that is that the installer was lazy. When you order a curb adapter, most places have two choices for ordering. You can give them...
  34. Replies
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    490

    Thats the problem right there TurboAir uses...

    Thats the problem right there

    TurboAir uses samsung compressors. Because Samsungs are not readily available as service parts, Turboair conveniently places a sticker on the unit that tells you...
  35. Thread: Hall effect

    by craig1
    Replies
    14
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    597

    If you asked today's engineers to design a hammer...

    If you asked today's engineers to design a hammer without a computer they couldn't do it. The most amazing thing about the mid 1900's is the amazing things that were designed and built without...
  36. Thread: Hall effect

    by craig1
    Replies
    14
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    597

    The magnetic flow meters in all 3 links all...

    The magnetic flow meters in all 3 links all require two electodes to penetrate the pipe wall perpendicular to the axis of the magnetic coils, so they are not non-invasive.

    The wikipedia link does...
  37. Thread: Hall effect

    by craig1
    Replies
    14
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    597

    Can you send a link to something that talks about...

    Can you send a link to something that talks about using a Hall sensor to measure flow without an internal magnetic turbine? I have done some googling and everything I can find requires a turbine in...
  38. Replies
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    The compressor would be mechanically identical,...

    The compressor would be mechanically identical, it's just the oil that would be different. I would be 99% sure that's a 134a compressor, but if your in doubt, you could always drain the oil and...
  39. Thread: Hall effect

    by craig1
    Replies
    14
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    597

    To measure the rate of oil leakage? Just...

    To measure the rate of oil leakage?

    Just kidding
  40. Thread: Hall effect

    by craig1
    Replies
    14
    Views
    597

    Are you sure you can measure flow that way? ...

    Are you sure you can measure flow that way? Never heard if it. Hall effect flow sensors usually have a small turbine with a magnet on it in a fitting and then a sensor on the outside of the fitting...
  41. Replies
    12
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    490

    If that unit has the samsung sk1a1c compressor it...

    If that unit has the samsung sk1a1c compressor it should have a 12uf run capacitor
  42. Replies
    12
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    490

    A lot if the turbo air stuff has run caps on the...

    A lot if the turbo air stuff has run caps on the compressor. If you rip off the run cap when installing a 3n1 it will over amp. You need to splice the run cap into the start and run wires if it has...
  43. Replies
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    423

    I've got a customer with 3 of those up on their...

    I've got a customer with 3 of those up on their roof that have been out of service for 10 years. Next time I'm there I'll take a look
  44. Replies
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    Yesterday I had a chef ask if I would be able to...

    Yesterday I had a chef ask if I would be able to adjust his freezer cold enough to store dry ice in it :D

    I take care of a few sushi restaurants and the good ones have -55 degree chest freezers...
  45. Replies
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    4,358

    What I meant was that you will find compressors...

    What I meant was that you will find compressors dual rated for LT502 and MT12 and those are also mechanically suitable for LT404 and MT134.

    sometimes I've seen HT12/MT22 compressors.
  46. Replies
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    1,304

    I have a customer that had a true GDM-49F...

    I have a customer that had a true GDM-49F maintaining -20. However its thermostat had welded on and the compressor only stopped for defrost. That can't be too efficient.
  47. Replies
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    4,358

    Usually when they are dual rated its for 12/134...

    Usually when they are dual rated its for 12/134 at medium temp and 502/404 at low temp.
  48. To avoid placing the unit so far away from the...

    To avoid placing the unit so far away from the house, it can be rotated so that the access panels are on the side facing away from the structure. Then you can be as close to the house as the...
  49. Replies
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    940

    I just worked on a buildout of a restaurant and I...

    I just worked on a buildout of a restaurant and I saw the bill from the fire suppression company for installing the system on a 12 foot hood. It was something like $1,200. I had to look at it twice...
  50. Thread: Reasons R>HVAC

    by craig1
    Replies
    30
    Views
    2,068

    working in a -14* freezer is better that working...

    working in a -14* freezer is better that working in a 70 degree cooler thats still full of meat.
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