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Type: Posts; User: dmedley

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  1. Thread: LON question

    by dmedley
    Replies
    4
    Views
    779

    kele controls

    kele controls
  2. Replies
    7
    Views
    3,540

    info

    aireco,honeywell and other suppliers will give you catalogs
    on johnson controls and etc... which have wiring diagrams
    not only on pnuematics but electronic vavs.
  3. Replies
    18
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    1,789

    Washington D.C. needs about 200,000...

    Washington D.C. needs about 200,000 HVAC,steamfitters,installers,pipefitters,service techs,ems
    techs etc... by the year 2007 to keep up with the new renovations happening and going to happen due to...
  4. Replies
    11
    Views
    1,733

    ozone drone is correct. you need to know the...

    ozone drone is correct. you need to know the spring range of the valve which is 3-6. take a measurement of the room.
    next set the tstat at room temp. if this is a johnson control stat a needle...
  5. Replies
    31
    Views
    5,782

    low load conditions

    Be very careful. Any chiller can wear out any bearings no matter what due to running the chiller in low load conditions on a regular basis.Running any chiller unloaded plays an effect on the...
  6. Thread: UA Star Exam

    by dmedley
    Replies
    5
    Views
    960

    depends on the people giving the test.

    depends on the people giving the test.
  7. review your dry gas laws. charles,boyles,grahms...

    review your dry gas laws. charles,boyles,grahms etc...
    as you remove the methane from the ground you should see a deeper vacum as you remove the gas. however if your vaccum is less you could be...
  8. Replies
    24
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    4,432

    trane is correct on thier info of the coils....

    trane is correct on thier info of the coils. however the whole reason for counter flow is so that the air will see colder water on the leaving side of the coil to help remove the moisture from the...
  9. Replies
    5
    Views
    1,387

    carefull

    i could probably give you all the formulas for measuring
    water flow however without manufactuers specific info on
    the orfice device all these formulas will only be rule of
    thumb.......
  10. Replies
    2
    Views
    751

    are you sure they are thyristers? last time i...

    are you sure they are thyristers? last time i checked soft
    start starters used silicone rectifying diodes on the
    positive side of the sine wave to soft start the motor.
  11. Replies
    21
    Views
    2,283

    you need to perform a megohm test on the windings...

    you need to perform a megohm test on the windings of this
    motor.test the leads to each other and to ground.check the
    bearing temps and clearances on the motor.check alignment of
    motor shaft to...
  12. Replies
    12
    Views
    2,821

    if you look closely at the sensor placements of...

    if you look closely at the sensor placements of each circiut
    you will find that each ckt has 2 sensors. one on the
    suction side of the compressor and one after the exv valve.
    what is happening is...
  13. Replies
    12
    Views
    2,605

    first you need to decifer what is overloading...

    first you need to decifer what is overloading compressor.
    is it liquid flooding,starving the compressor of suction
    gas needed for cooling the motor,high superheat? Then you
    need to invest in a...
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