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Type: Posts; User: bkmichael65

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  1. Replies
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    I think it varies depending on the manufacturer,...

    I think it varies depending on the manufacturer, but I think most just have higher speed taps on the motor windings that get energized when the thermostat calls for the 2nd stage.
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    1,672

    Normal subcooling varies depending on the design...

    Normal subcooling varies depending on the design of a certain unit as well as the load and ambient temp. All things being equal, you generally have about the same subcooling regardless of refrigerant...
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    .06 over=close enough

    .06 over=close enough
  4. Replies
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    1,361

    The FLA rating doesn't mean much on motors of...

    The FLA rating doesn't mean much on motors of differing horsepower, since the tested full load of a 1/2 hp motor isn't going to be the same as the full load of the larger one. The smaller hp motor...
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    If he has a single stage compressor, he could...

    If he has a single stage compressor, he could probably keep the oversized unit and switch to a two stage compressor and be okay
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    So instead of size for the load, he wants you to...

    So instead of size for the load, he wants you to increase the load for the size? I wouldn't go down that road
  7. Actually, there is such thing as two phase power....

    Actually, there is such thing as two phase power. It's a 4 wire system, with 2 phases 90 degrees out of phase. With a run capacitor shifting the run winding 90 degrees out of phase and providing...
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    3,574

    I understand. I asked if he was serious because I...

    I understand. I asked if he was serious because I thought maybe he slept through class that day
  9. Replies
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    3,574

    Are you serious?

    Are you serious?
  10. Replies
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    1,006

    You could run into trouble with the fan, duct...

    You could run into trouble with the fan, duct work and an oversized system. Kind of hard to tell without more info
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    Everybody gets pretty emotional about meter...

    Everybody gets pretty emotional about meter brands and their quality. I've had several kinds over the years, some of them expensive as hell, but I'm pretty satisfied with my FP SC77. It does...
  12. Those tolerances are measurements for straight...

    Those tolerances are measurements for straight off the factory floor and there are so many things that can account for a slightly high amp draw. I know bosses don't make money on these cheap pm's...
  13. Replies
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    1,108

    My guess is you have some non condensables that...

    My guess is you have some non condensables that are circulating through the system and you don't have the correct charge so you're not seeing higher head pressure
  14. ??? Only if it's got a reciprocating compressor...

    ??? Only if it's got a reciprocating compressor and the txv is a non bleed off type
  15. Replies
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    It took 2-3 weeks before I got my card from them...

    It took 2-3 weeks before I got my card from them and one of my buddies took even longer. Just give them time and you'll get it. By the way, congragtulations
  16. Replies
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    That r-22 isn't going to hurt anything except but...

    That r-22 isn't going to hurt anything except but the pocket book
  17. Replies
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    1,259

    I think more often that not, if you don't weigh...

    I think more often that not, if you don't weigh the charge in heat mode, you'll be back to adjust it in the summer
  18. Thread: Superheat

    by bkmichael65
    Replies
    92
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    6,965

    The latent heat is held by the water vapor. The...

    The latent heat is held by the water vapor. The refrigerant in the coil absorbs the latent heat in the water vapor as it condenses back to liquid
  19. Thread: Superheat

    by bkmichael65
    Replies
    92
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    6,965

    [QUOTE=jmsmars1;15493161] You're removing latent...

    You're removing latent heat from the air by dehumidifying it, but the refrigerant isn't absorbing latent heat if it's not changing state and that is where you get your btu capacity
  20. Thread: Motor FLA

    by bkmichael65
    Replies
    27
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    2,173

    I'm having a little trouble following that, too....

    I'm having a little trouble following that, too. I think he's talking about an increased load(increased physical resistance), which would cause a higher amp draw to keep the rotor turning
  21. Replies
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    I guess he was out of duct tape

    I guess he was out of duct tape
  22. Replies
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    With a single cap tube(which I don't think it...

    With a single cap tube(which I don't think it would be possible), you would have to use a bi-flow filter as their wouldn't be any check valves and you would only have one path for the liquid
  23. Thread: Motor FLA

    by bkmichael65
    Replies
    27
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    2,173

    Inductive loads don't consume power like...

    Inductive loads don't consume power like resistive loads. If you drop the voltage to a motor, it increases its amp draw. If you increase the voltage, amps decrease.
  24. Replies
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    The installer was thinking of the future....the...

    The installer was thinking of the future....the future sale of a heat exchanger
  25. Replies
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    Grainger has some, but they aren't cheap

    Grainger has some, but they aren't cheap
  26. Replies
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    The homeowners can adjust airflow by pushing on...

    The homeowners can adjust airflow by pushing on it with a big stick. Cutting edge technology
  27. Thread: Motor FLA

    by bkmichael65
    Replies
    27
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    2,173

    Dual voltage motors have the fla at each voltage...

    Dual voltage motors have the fla at each voltage separated by a slash. I'm not really sure what the -2 is about
  28. Replies
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    Thermal limits would just open and reset when...

    Thermal limits would just open and reset when cool. Sounds like you just need to get your airflow taken care of
  29. Replies
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    It may be time to pull out the indoor coil and...

    It may be time to pull out the indoor coil and blower for a thorough cleaning
  30. Replies
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    Why did we invade Iraq? Look at how much money...

    Why did we invade Iraq? Look at how much money people like Dick Cheney made in this endeavor and the question kinds of answers itself
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    Moisture left in the system gets absorbed by POE...

    Moisture left in the system gets absorbed by POE oil and forms an acid. That acid tends to stay in the liquid oil in the compressor and eats away at windings causing a burnout
  32. Ultimately, your safety is your responsibility....

    Ultimately, your safety is your responsibility. Don't do anything you know to be unsafe. I know of several people over the years that left the job site in the coroner's wagon because they ignored...
  33. Replies
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    If I had to guess, I would say aux heat is...

    If I had to guess, I would say aux heat is energized the whenever there is a call for heat
  34. Replies
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    As long as the defrosts weren't excessively long...

    As long as the defrosts weren't excessively long or frequent, the temperature wouldn't drop more than a couple of degrees and just running one element would lower power bill. Pa. is kind of a cold...
  35. I believe you're supposed to bury it on holy...

    I believe you're supposed to bury it on holy ground before the next full moon now
  36. Replies
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    For every government freebie, there's a...

    For every government freebie, there's a corporation that lobbied for it and is getting rich off it. Ross Perot made his fortune of Medicare contracts and the list of corporations sucking at the...
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    I'm guessing by the question, this is a DIY...

    I'm guessing by the question, this is a DIY issue. It may be worth your time and money to pay a small service fee and have someone finish the wiring and check everything out. Would probably cost you...
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    Good thing about electronic controls are no...

    Good thing about electronic controls are no moving parts to worry about, but you may want to pull them out and clean that dust out of the wheels
  39. Replies
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    I'm thinking the installer worked for booze and...

    I'm thinking the installer worked for booze and was paid in advance
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    Anybody know how close that will get you?

    Anybody know how close that will get you?
  41. There are practice tests for free online to give...

    There are practice tests for free online to give you an idea of the kinds of questions. The actual tests are fairly straightforward, multiple choice and you only need 70% to pass. A competent tech...
  42. Replies
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    If it's leaked half its charge, you should have...

    If it's leaked half its charge, you should have some decent oil spotting. It could be someone has just borrowed some refrigerant. I've heard of people using it for their meth lab production. Be on...
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    Most likely your drain pan is plugged and...

    Most likely your drain pan is plugged and overflowing. You should get that taken care of before you have to replace the ceiling
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    R417a is another one. It's ashrae rated a1

    R417a is another one. It's ashrae rated a1
  45. A pressure drop across the distributor?

    A pressure drop across the distributor?
  46. Thread: What next?

    by bkmichael65
    Replies
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    795

    NATE certification is a good place to start, but...

    NATE certification is a good place to start, but it really only shows you have the basic knowledge in your chosen area. From what I've heard RSES certification is more of a feather in your cap.
  47. I would probably just pull new low voltage wire...

    I would probably just pull new low voltage wire through and cross my fingers
  48. Replies
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    The old energized chassis trick

    The old energized chassis trick
  49. Replies
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    1,356

    Superheat temps and subcool temps are independent...

    Superheat temps and subcool temps are independent of each other and can vary depending on the equipment, load, refrigerant charge and airflow
  50. Blower dropping out on overload and tripping the...

    Blower dropping out on overload and tripping the pressure switch?
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