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Type: Posts; User: whitepoundog

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  1. Replies
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    Motive Air. I agree, this is way off base...

    Motive Air.

    I agree, this is way off base with the setup specs. against all I know. This has been a battle witht he Manufacture.I am going to go with the norm on this one, set it up normal.
  2. Replies
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    This has been a pretty good thread, from reading...

    This has been a pretty good thread, from reading both sides the argumnent seems to be the "by the book the way the industry has asked to do the job" and "the practical field not in a perfect world...
  3. Replies
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    1,081

    Air cooled Chiller from Italy

    I have an air cooled chiller on a site with a relief valve on the liquid line rated at 400#. The high pressure cutout transducer is set at 405# on the discharge line. This is a 407c system. I have...
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    Do you have any specs or a good website...

    Do you have any specs or a good website explaining cold traps.
  5. Replies
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    1,403

    Triple Evac dilema

    I found out a co-worker was doing a triple evacuation on a unit charged with R134. He broke the vaccum each time with R-22. Why I am not sure? He is old school and will only listen to facts on why...
  6. Thread: Trane YCD

    by whitepoundog
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    11
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    2,496

    unfortuantely you can not estimate the subcooling...

    unfortuantely you can not estimate the subcooling by taking the discharge pressure. Recover the refrigerant weigh it and add taps to the LL.
  7. Thread: Trane YCD

    by whitepoundog
    Replies
    11
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    2,496

    You mentioned a 275# psi at the discharge but did...

    You mentioned a 275# psi at the discharge but did not mention a liquid line #. You can not take subcooling with out the LL pressure. If your liquid line temp was 101 that should make your pressure ...
  8. I am finally getting to go tomorrow. I agree this...

    I am finally getting to go tomorrow. I agree this seems like an external issue other than the pump. It was reversed already as far as I know.
  9. Replies
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    Use a Trane disharge air thermostat. Set it to 55...

    Use a Trane disharge air thermostat. Set it to 55 and set the program to control occ/unnocc modes. Let the reheat coils control themselves.
    Not the most efficient way but will work.
  10. [QUOTE=hvac248;3212642]Well kind of, it leads...

    [QUOTE=hvac248;3212642]Well kind of, it leads from the pump to the sump,and I should have said sucking refrigerant vapor instead of air.[/QUOTEi knew what you meant, thanks]
  11. Is the pickup tube on the pump itself?

    Is the pickup tube on the pump itself?
  12. Ok more peices are coming in, it looks like...

    Ok more peices are coming in, it looks like another contractor replced it last year. I could not get there today. But I will look into the gasket.
  13. copeland compressor oil pressure problems

    Ok I do not have all the facts yet, but I want to get some outside thoughts. My tech told me he has a 6R compressor, replaced the oil pump because it was not making pressure. It was only delivering...
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    I am assuming you took the actual DA reading with...

    I am assuming you took the actual DA reading with a probe strapped to the Trane DA sensor.

    The sensors go out of calibration, quite often. Carry a few on the truck like CG said.
  15. Replies
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    1,170

    Do the right thing and sub out Trane to come take...

    Do the right thing and sub out Trane to come take a look, then take a summit operator class for starters. Trane offices have them annually. Believe me Trane techs are online with tech support as...
  16. Replies
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    574

    you can attempt to pump the compressor down, or...

    you can attempt to pump the compressor down, or you can use a recovery machine to pump the refrigerant into the high side.

    whatever you do make sure there is no pressure in the compressor before...
  17. Replies
    18
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    2,651

    Yeah I agree, The more I think of it the more I...

    Yeah I agree, The more I think of it the more I think that these guys doing it are not our technical finest just thought I was missing something, your never to old to learn.

    Thanks for the reply.
  18. Replies
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    2,651

    megger uses

    A couple of co-workers use a megger to as they say " I'm checking between the windings". I ask them why not use an appropriate ohm meter to check between windings. I get blank stares from them.Unless...
  19. Check the oil with an acid test kit once annually...

    Check the oil with an acid test kit once annually if you are seasonal, twice if it runs all year. That should be sufficient.
  20. Replies
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    2,468

    Hope your joking about the breaker

    Hope your joking about the breaker
  21. Replies
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    547

    That is usually how it goes. Two jobs I have seen...

    That is usually how it goes. Two jobs I have seen the cap was checked (OK) then swapped out because I never trust my MF meter. Still the motor was reversed. Wiring was correct and volts normal.
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    547

    PSC motor just reversed

    Okay, I am sure at somepoint I knew the answer to this once but my mind ain't what it used to be. Here goes. Why does a PSC motor sometimes just reverse. Capacitor is still good but the motor just...
  23. Replies
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    25,210

    R-11 is phased out, yet readily available. R-22...

    R-11 is phased out, yet readily available. R-22 is also being phased out, and that will available, the same for 123, it is stockpiled. Lp machines are the way to go. I do agree with the loyalty...
  24. Replies
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    1,307

    Common is used in so many ways in our field it is...

    Common is used in so many ways in our field it is bound to get confusing. But I Agree with mad hat in a 230v circuit there is no technical common, they are both hot. L1 & L2.
  25. Replies
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    3,859

    what is a the model and serial, that is...

    what is a
    the model and serial, that is definately got to be mistake.
  26. Thread: Rtaa

    by whitepoundog
    Replies
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    1,450

    definately check flow and accuracy of the both...

    definately check flow and accuracy of the both sensors.
  27. Replies
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    Is the sensor wired correctly? And like...

    Is the sensor wired correctly? And like makinmoney said check your OA sensor in the cond section and make sure it is correct.
  28. Replies
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    Can you be more specific on what type of chiller?

    Can you be more specific on what type of chiller?
  29. Replies
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    2,513

    Thanks again!!!

    Thanks again!!!
  30. Replies
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    2,513

    Just an update: At first I was given my...

    Just an update:

    At first I was given my diagnostic time after calmly explaining to my service manager it was the correct thing to do. But then it was taken away, by a higher authority who made his...
  31. Well enlighten us dummies.

    Well enlighten us dummies.
  32. Replies
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    2,513

    Yeah I replaced one once with electric unloading...

    Yeah I replaced one once with electric unloading plate, I still have not checked it out yet.
  33. Replies
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    2,513

    I got a bad dispatch next week to change a 100...

    I got a bad dispatch next week to change a 100 ton model E on a split system. I asked what the tech found to condemn it, I was told it fails on oil once a day and the suction runs at about 100#s. I...
  34. Can anyone explain to me in a sequence of...

    Can anyone explain to me in a sequence of operation manner how the delta wye circuit with shorting contactors work. The Trane IOM does not have a sufficient explanation and my co-workers are no help....
  35. There is no pressure tap on the liquid line on...

    There is no pressure tap on the liquid line on Voyagers. Subcooling can not be taken properly with out taking the liquid pressure. I think he is just messing with you or doing what alot of guys do...
  36. Replies
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    I used to braze eveything. Now I use my...

    I used to braze eveything. Now I use my discression when to braze and when not to. Staybrite is a great product and if done correctly there should never be an issue. The flux you use for it is non...
  37. Thread: rtac140

    by whitepoundog
    Replies
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    1,621

    Have you witness it? and what is the oil temp?

    Have you witness it? and what is the oil temp?
  38. Replies
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    956

    Thoughts please. We have a customer with a 250...

    Thoughts please.

    We have a customer with a 250 ton RTAC Trane chiller. The condenser fan motor took a dump and damaged the coil in 3 spots. The leaks look repairable, but I was wondering what...
  39. Replies
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    20 degrees is what I have always been taught.

    20 degrees is what I have always been taught.
  40. Replies
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    4,378

    pump down

    How can you say the pressure unloaders will not effect a pumpdown? As soon as you drop below the pressure set point the unloader will open and continue to open the further from the setting you go....
  41. Replies
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    I would also check the condition of the maint....

    I would also check the condition of the maint. sounds like airflow could be an issue here as well.
  42. Replies
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    1,061

    What is a needle valve? where is the muffler? is...

    What is a needle valve? where is the muffler? is it internal? I will give it a try.

    Thanks
    Rick

    [Edited by whitepoundog on 03-29-2006 at 05:32 PM]
  43. Replies
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    Heat, moisture, bad refrigeration practices.

    Heat, moisture, bad refrigeration practices.
  44. Replies
    6
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    1,061

    I was never taught what the gas ballast function...

    I was never taught what the gas ballast function on the vacuum pump does. I have asked many techs and a lot do not know and some seem to make it up as thay go. Help. i finally want to feel I have the...
  45. Replies
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    685

    Due to construction of an office space the...

    Due to construction of an office space the presidents office is directly below the exaust fan and dampers of the intellipak. Need to disable this function , to loud and he is impatient. the building...
  46. Replies
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    1,626

    It always amazes me that there are actually...

    It always amazes me that there are actually people that act that way. I think when I found the wires reversed if he would like to get his phase meter and double check his work.
    You think that is...
  47. Replies
    5
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    915

    We have an account where a water cooled SWUD unit...

    We have an account where a water cooled SWUD unit is controlled by discharge air W7100 control. The compressor bangs on and short cycles. The compressor has 2 unloader heads, but only one is used. My...
  48. Replies
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    953

    great link! thanks

    great link! thanks
  49. Replies
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    1,768

    Are you sure it is not tripped? Sometimes the...

    Are you sure it is not tripped? Sometimes the reset circuit on a Trane can be tricky.
  50. Replies
    5
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    953

    Anybody know where I can get a cut or lit from a...

    Anybody know where I can get a cut or lit from a drier shell so I can teach and explain it to guys just breaking in. I tried alco & parker and sporlan but nothing. I want to show how it flows.
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