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Type: Posts; User: wormy

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  1. just a thought.... double check your gauges and...

    just a thought....
    double check your gauges and meters... make sure everything is reading properly and calibrated
    nothing sucks worse than having the wrong numbers
    we're only as good as our tools ...
  2. Replies
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    472

    wait till you see an old unit with that uses the...

    wait till you see an old unit with that uses the capacitor as part of the crankcase heater circuit

    Trane used this years ago.... just ran across and old Rheam (or was it was it a RUUD) that did...
  3. Thread: Low voltage

    by wormy
    Replies
    3
    Views
    474

    isn't a 3000 stat a HP stat? if so... you better...

    isn't a 3000 stat a HP stat?
    if so... you better not use that or your air conditioner is gonna kick on when you call
    for first stage heat. You just need a normal stat not a heat pump stat.

    gas...
  4. Replies
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    3,650

    opened a carrier package unit once very very old...

    opened a carrier package unit once
    very very old model..... heat section on right / compressor section on left
    wished I could tell you model number

    huge wasp nest
    red wasps

    go down
    grab...
  5. its a shame they installed a new system that uses...

    its a shame they installed a new system that uses r22
  6. Replies
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    1,617

    i've seen this once on a lab chest type freezer...

    i've seen this once on a lab chest type freezer
    pretty sure it was a 404a system
    w/ rotary compressor as well
  7. Replies
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    629

    Ran into a Carrier system before that had...

    Ran into a Carrier system before that had something like 4 pounds of refrigerant listed on the nameplate
    split system.... similiar to a mini-split.... had a compact evap/fan section hanging from the...
  8. Replies
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    642

    Picturing the scene from Poltergeist where the...

    Picturing the scene from Poltergeist where the community was built over a cemetery and coffins came poppin up out of the ground.

    when they're driving off.... you gotta yell along with them......
  9. Replies
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    493

    Had to do some refreshing on the subject myself ...

    Had to do some refreshing on the subject myself

    The dwyer gauge I used with my pitot tube had a FPM scale on it to do the conversion automatically
    I would traverse the duct and average all my FPM...
  10. Replies
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    1,562

    Just so I wouldn't drive myself nuts with...

    Just so I wouldn't drive myself nuts with this....
    I looked up the manual for the panasonic in the guard shack I talked about
    its the one with the HUGE temp swing I mentioned....
    here's how the...
  11. Replies
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    1,562

    Ironic..... Not that anyone is actually...

    Ironic.....

    Not that anyone is actually interested in this story...
    but I'm venting none the less
    and this looks like a good spot to put it hehe

    Talk about mini splits, and end up at one of...
  12. Replies
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    1,562

    As mentioned before.... the translation from...

    As mentioned before....
    the translation from Korean to English is horrid
    I've pulled my hair out many times trying to figure out what they are trying to say

    Customers have a hard time with the...
  13. Replies
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    3,044

    white and brown w/ white stripe are one and the...

    white and brown w/ white stripe are one and the same
    ohm them out and you'll see they ohm out zero ohms

    putting a wire nut on the brown w/ white stripe and not connecting it to an
  14. Replies
    36
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    2,597

    I don't set up a lock out temp. We install...

    I don't set up a lock out temp.
    We install mostly TCONT402 stats
    really nice with dual fuel
    without the lockout enabled.... it calculates how long the the system has ran and decides what it needs...
  15. Thread: contactor issue

    by wormy
    Replies
    67
    Views
    5,831

    Voltage applied to contactor coil usually equates...

    Voltage applied to contactor coil usually equates to contactor pulling in right?

    Think a little further in depth and we really need electrical current moving into the coil to produce a magnetic...
  16. Replies
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    801

    http://www.morrisproducts.com/wire-management/plas...

    http://www.morrisproducts.com/wire-management/plastic-knockout-plugs.asp

    Was just doing random searches to help out and run across this
    hope it helps
  17. Replies
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    467

    I see lots of offices suffer from stratification...

    I see lots of offices suffer from stratification
    Supply and Return in ceiling
    Since return is not near floor, it can't draw in cooler air laying on the floor
    the supply grilles are all 'identical'...
  18. Replies
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    467

    Google search "Terminal Velocity Hart and Cooley"...

    Google search "Terminal Velocity Hart and Cooley"
    Read the first PDF "Throw, Blow, Flow, Oh No!"

    See if that gets you headed in the right direction
  19. Replies
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    2,021

    Where does the high voltage reading come from? ...

    Where does the high voltage reading come from?

    Wormy's simplified version

    When you pass a magnet (or more precisely the lines of the magnetic field) near a conductor, an electrical current is...
  20. Thread: Stumped

    by wormy
    Replies
    29
    Views
    2,129

    along the same lines as the compressor protection...

    along the same lines as the compressor protection mentioned before......
    this video mentions larger sized compressors
    I believe the technology has finally migrated to their smaller compressors...
  21. Replies
    617
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    113,006

    Had a customer with no heat When I walked in the...

    Had a customer with no heat
    When I walked in the house, I smelled burnt paper and saw the ceiling kinda blackened.
    Asked about it, and the lady said...

    We were cold... my husband decided to...
  22. I'll take a stab at another way to look at it....

    I'll take a stab at another way to look at it.
    Grant it... it may not be the right answer
    I'm just trying to wrap my head around it as well.

    High outdoor temp = high compressor amperage
    Low...
  23. Replies
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    18,643

    http://www.toptechparts.com/iaq/airknight.html ...

    http://www.toptechparts.com/iaq/airknight.html


    I bought a Bryant Evolution gas pack from our distributor for a killer discount.
    Another dealer had ordered the equipment and it sat in their lot...
  24. Replies
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    448

    possible high pressure safety switch opening...

    possible high pressure safety switch opening trying to protect the equipment from high refrigerant pressures.


    110 outdoor temp AND 87 degree indoor temp will cause the refrigerant pressures to...
  25. Thread: Failed VFD's

    by wormy
    Replies
    11
    Views
    1,928

    Reminds me of the time..... extremely hot get...

    Reminds me of the time.....

    extremely hot
    get late call
    My A/C is out and I have a bunch of kids
    I arrive to an extremely hot mobile home with a
    window unit.
    I pull in and tell the guy we...
  26. Thread: Service Bag

    by wormy
    Replies
    14
    Views
    2,618

    I had a Veto LC before..... I'm probably the only...

    I had a Veto LC before..... I'm probably the only one on here that didn't really like it.
    I'm not a very big person and with my tools in it.. it was just way too heavy to lug around.
    The bag by...
  27. Replies
    14
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    1,036

    Did the old unit heat and cool OK? If it did,...

    Did the old unit heat and cool OK?
    If it did, then why go bigger?
    If it didn't... why? Was it correctly sized and installed with duct leaks?
  28. Thread: Oil change help

    by wormy
    Replies
    10
    Views
    1,642

    Its a 30GTN100-C631KA I think these are the...

    Its a 30GTN100-C631KA

    I think these are the newer style EXV's
    This factory had a sister factory on the opposite end of town
    that had the older style EXV's
    They had an aluminum looking motor...
  29. Thread: Oil change help

    by wormy
    Replies
    10
    Views
    1,642

    Never thought of a check valve internal of the...

    Never thought of a check valve internal of the compressor
    That would explain it for sure

    And yup... this chiller has the Electronic Expansion Valves on it
    On a side note concerning them....
    On...
  30. Thread: Oil change help

    by wormy
    Replies
    10
    Views
    1,642

    Yup... I agree Need to replace the oil and test...

    Yup... I agree
    Need to replace the oil and test till its all cleaned up

    I hate that we're doing rinky dink 'one time only'
    oil change and filters on compressors that are
    shorted to ground.
    I...
  31. Thread: Oil change help

    by wormy
    Replies
    10
    Views
    1,642

    Oil change help

    Carlyle O6E Compressors

    Changed the oil on two today....
    and I'm pretty sure I made every mistake
    I could possibly make.
    So.... in an effort to not repeat today's
    crappy set of events.......
  32. Thread: Vacuum Pump

    by wormy
    Replies
    23
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    1,287

    I'd like to give one of these a test run...

    I'd like to give one of these a test run
    http://www.appioninc.com/products/tez8features.html
  33. Replies
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    3,506

    I'm of the opinion that efficiencies do change...

    I'm of the opinion that efficiencies do change with any change in indoor or outdoor conditions.

    SEER is a measure of equipment efficiency (cooling mode).
    HSPF is the same thing but for heat pumps...
  34. Replies
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    2,348

    Don't be too hard on the tech's lack of a good...

    Don't be too hard on the tech's lack of a good response.
    There's a huge amount of knowledge that goes into this field.
    I've been doing it for twenty years and I'm still learning stuff
    that blows...
  35. Replies
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    2,348

    More than likely, you have a case of formicary...

    More than likely, you have a case of formicary corrosion
    otherwise known as Ants Nest Corrosion.


    I have seen a study by a major A/C Manufacturer
    that still hasn't come to a conclusion as to...
  36. Replies
    8
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    2,222

    Tedkidd Gonna start a new thread in the tech...

    Tedkidd

    Gonna start a new thread in the tech forum to discuss the two duct issue.
    Look for the thread entitled "Duct out both sides?"

    was going to post a link to an install guide
    didn't need...
  37. Replies
    8
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    2,222

    more fuel for the fire (Its late and I'm...

    more fuel for the fire
    (Its late and I'm sleepy... so take this with a grain of salt)

    old school rule of thumb
    (always refer to manufacturers installation requirements)
    anything larger than a...
  38. Thread: 2 pole contactor

    by wormy
    Replies
    13
    Views
    2,752

    We had just hired a new guy.... his prior...

    We had just hired a new guy....
    his prior experience was in the Marines
    Asked him what he did
    "Done the wiring for communications"
    wow cool
    "Just came back from Iraq, we trailed behind infantry...
  39. Replies
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    1,749

    Congrats on becoming a student of the trade....

    Congrats on becoming a student of the trade.
    Hope you have a long successful career.

    You've come to an excellent site to further your learning and understanding.

    Keep in mind, we're not gonna...
  40. Copeland's Advanced Scroll Temp Protection ...

    Copeland's Advanced Scroll Temp Protection

    For those wanting to know more about
    one of Copeland's ways to protect their compressors
    (commercial compressors though.... don't think its on
    the...
  41. Replies
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    2,338

    If I'm reading your comment right, You have a...

    If I'm reading your comment right,
    You have a Trane XR80 which is a furnace
    and its inside the house

    If the mice are getting into the blower compartment;
    then chances are, there are air leaks...
  42. Replies
    17
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    1,625

    well... I'm sorry I'm not gonna be a huge help......

    well... I'm sorry I'm not gonna be a huge help...
    just letting you know there's "SOMETHING OUT THERE" that might help.


    We've installed a 100% outside air unit in a Chemical Lab.
    Boss came up...
  43. Replies
    17
    Views
    2,338

    Which piece of equipment are the mice getting in...

    Which piece of equipment are the mice getting in to?

    The outside section or the inside section?
  44. Replies
    62
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    6,420

    11 years old. Did the prob start this year? DId...

    11 years old.
    Did the prob start this year?
    DId it do this 10 years ago?
    How often is the weather adverse? (Ice Storm weather)
    Trouble defrosting? As in frost forming all the way out to the...
  45. Replies
    62
    Views
    6,420

    How long have you had this unit? Have you run...

    How long have you had this unit?
    Have you run into this unit not able to defrost itself on
    a regular basis? Not sure where you're from or what kind of
    weather patterns you have though.
    I'd say...
  46. Replies
    62
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    6,420

    Turning the AC on to defrost is not something I'd...

    Turning the AC on to defrost is not something I'd recommend.
    On a side note, you can run your AC in the winter if
    controls are added to do whats necessary to keep the
    system operating in the...
  47. geothermal zero defrosts hehe

    geothermal
    zero defrosts hehe
  48. Replies
    12
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    1,728

    For a surface to sweat the temperature of that...

    For a surface to sweat
    the temperature of that surface has to be colder than the dew point of the ambient air.

    Dew point is the temperature that the air has to be for the moisture in that air to...
  49. Replies
    18
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    2,153

    just in case.... this is the btuh calc for cool...

    just in case....
    this is the btuh calc for cool mode

    BTUH = (Return Enthalpy - Supply Enthalpy) x 4.5 x CFM
  50. Replies
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    2,153

    Since you have multiple returns, I'd stay away...

    Since you have multiple returns, I'd stay away from getting
    a flowhood or velometer to measure each individual return.
    Small error on each grill adds up and you end up with a
    number that don't...
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