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Type: Posts; User: jayguy

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  1. Replies
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    Someone once posted a lot of info on discharge...

    Someone once posted a lot of info on discharge superheat around here somewhere.
  2. Replies
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    I have seen that before. Lost a full charge over...

    I have seen that before. Lost a full charge over 4 days, 3 times in a row before I found it. Replaced sensor and all was good.
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    151

    Yes. Outdoor air temp sensor needs to be...

    Yes. Outdoor air temp sensor needs to be installed and an EPROM upgrade kit.
  4. Replies
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    151

    so...have you upgraded this unit to include the...

    so...have you upgraded this unit to include the outdoor air temperature sensor and the new software that goes with it?
  5. Replies
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    321

    Oil pressure diff switch is to be set for 35...

    Oil pressure diff switch is to be set for 35 psid...the compressor needs 25 psid to maintain proper lubrication and 10-15 psi for the unloaders...so, 35 psid is the minimum. below 35 psid, you might...
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    Let me see if I am getting this right.. 1....

    Let me see if I am getting this right..

    1. Unloader solenoids energize, pressures change but no change in amp draw.
    A. Amperage should go up as unit loads up, however, amperage will drop as...
  7. I think he was making fun of himself...not me....

    I think he was making fun of himself...not me. Maybe I am wrong. I know that I was joking around.

    As for remembering wiring diagrams, I try NOT to remember them. Sure, over time some things have...
  8. HE ALSO NEEDS A BOOK ABOUT RUN-ON SENTENCES AND...

    HE ALSO NEEDS A BOOK ABOUT RUN-ON SENTENCES AND YELLING ON THE INTERNET!!!! HELP HIM!!! FOR GODS SAKE JIM, I'M ONLY A DOCTOR!!!!
  9. Replies
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    I prefer subheat and supercooling myself. Scott...

    I prefer subheat and supercooling myself. Scott got you started though.

    Now, learn how to do the math yourself so that you will know when your guages are lying to you.
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    The reason is for miscibilty at lower temperature...

    The reason is for miscibilty at lower temperature or "off" applications. They will not change their minds or literature due to legal liabilities. Can you get away with higher percentages of MO in...
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    on most chillers, the safeties (PT's, CT's, etc.)...

    on most chillers, the safeties (PT's, CT's, etc.) are on the line side of the contactors. rewire the motor anyway you want...it won't matter...the motor can fry, run backwards, not start all, work...
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    Theoretically? Yes. In reality? No. However, I...

    Theoretically? Yes. In reality? No.

    However, I do it all of the time. If it wasn't a burn out, then you really shouldn't have an issue.

    Fill with nitrogen and let the tanks sit overnight upside...
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    I have it on my house and several other air...

    I have it on my house and several other air cooled chillers. I get the cheap vinyl/plastic stuff. After cleaning the condenser, turn the unit on so that it sucks the screen to the condenser...it's...
  14. Thread: Yes, I am a God

    by jayguy
    Replies
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    1,269

    She will call you whatever you ask her to call...

    She will call you whatever you ask her to call you. I did it as a lark and kept it because it is so funny to watch people listen to her.
  15. Thread: Yes, I am a God

    by jayguy
    Replies
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    1,269

    Chewing gum and some rubber bands....chew the gum...

    Chewing gum and some rubber bands....chew the gum first.

    I am not a god, but Siri calls me "d!psh!t".
  16. Replies
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    2,818

    what's with the light switch you keep...

    what's with the light switch you keep referencing? if the contacts and electrical wiring are exposed, you should have some form of protection on. i don't go to the arc flash stuff until i am at...
  17. Replies
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    2,818

    It is not just about blowing the terminals out....

    It is not just about blowing the terminals out. Manually energizing a contractor bypasses all safeties. Also, one slip of the screwdriver and you get to check the voltage levels with your fingers or...
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    "often times"...uh, no. residential or...

    "often times"...uh, no.





    residential or commercial or single phase or mutli-phase...arc flash is ALWAYS a big deal.
  19. Thread: Trane Chiller

    by jayguy
    Replies
    7
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    501

    As SM has said, it should have shutdown on low...

    As SM has said, it should have shutdown on low pressure or low leaving temp first. If someone set the chiller up for glycol and then allowed the chilled fluid to get diluted, then that is the real...
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    You are obviously out of your safety zone and you...

    You are obviously out of your safety zone and you need to call in reinforcements. Stay there and learn.
  21. Replies
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    how often do you braze up a hole in the middle of...

    how often do you braze up a hole in the middle of the pipe? perhaps for running some line sets or something, but for normal compressor/component installation/repair...i don't think you could get it...
  22. Replies
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    I disagree. Perhaps some people need to change...

    I disagree. Perhaps some people need to change because they don't know who the hell they are and they are searching for the answer. I know that people don't necessarily stick with the same company...
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    I checked that out first...it is the saturation...

    I checked that out first...it is the saturation temperature.
  24. Replies
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    After looking over your data I have some notes. I...

    After looking over your data I have some notes. I know you are only asking "Why is Circuit #2 higher in discharge pressure than Circuit #1?" I believe the following is why...

    Suction pressure of...
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    I hope I am wrong, however, you might be buying...

    I hope I am wrong, however, you might be buying them some repairs or a new unit. If the water temp sensors fail and they have someone else come in to diagnose the issue, they may find that the low...
  26. Replies
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    It may be that the unit was designed for this...

    It may be that the unit was designed for this higher pressure too. I don't have the specs for this system, but you might want get them.

    What was the leaving air temp? Did you compensate for any...
  27. Replies
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    a stainless steel heat exchanger is not going to...

    a stainless steel heat exchanger is not going to be very efficient....compared to a copper heat exchanger. I don't think that a stainless steel heat exchanger was an option on that model so it is...
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    And your suction superheat is... And your...

    And your suction superheat is...
    And your subcooling is...

    SS evap? That explains the approach...at least most of it. As for the water side, you will need to tap into it or SWAG it.
  29. What if your meter is reading 15 and it is...

    What if your meter is reading 15 and it is actually slugging? A system with too much oil will do just that. Slug, starve, slug, starve.

    If you are only looking for charge loss, a discharge temp...
  30. Most technicians don't even know what superheat...

    Most technicians don't even know what superheat IS...now we want to throw a black box at them? It would be condemned on every job or jumped out at the first trip.

    Some of it is legal...
  31. Just got my brand new quadcopter stuck in a tree...

    Just got my brand new quadcopter stuck in a tree this evening. Got it for my bday 3 days ago....we can't have anything nice.
  32. It is and has and always will be about the...

    It is and has and always will be about the dollar. Any company in business that isn't about "the dollar" is doomed to fail.

    The difference between good and bad companys is WHICH dollar is most...
  33. Thread: Trane TR-200

    by jayguy
    Replies
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    432

    while it is true that the amps are probably high...

    while it is true that the amps are probably high due to the lack of ductwork, it is also true that if the motor output is at 60 Hz, then the voltage output should also be nameplate voltage...lots of...
  34. Thread: Trane TR-200

    by jayguy
    Replies
    12
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    432

    At 60 Hz, you should be at rated voltage...well,...

    At 60 Hz, you should be at rated voltage...well, pretty close to the incoming power anyway. You could have 1 or 2 things going on if you have good quality power coming in.

    1: incorrect...
  35. Thread: Trane TR-200

    by jayguy
    Replies
    12
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    432

    The drive is not going to ever put out its rated...

    The drive is not going to ever put out its rated voltage until it is at its rated speed. Depending on configuration, it will roughly put out 50% of its voltage at 50% of its speed...it's not that...
  36. Replies
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    I have heard a couple of stories about that. We...

    I have heard a couple of stories about that. We got a call about one of our guys was dead in his work van in this farmers field. Farmer called the cops. Turns out the tech was at the casinos all...
  37. Thread: Drake Chiller

    by jayguy
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    986

    How to never get help again starring.....you! An...

    How to never get help again starring.....you! An apology goes a long way. Posters around here have friends who can help...or not.
  38. Replies
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    You could take him to lunch AND pay for it out of...

    You could take him to lunch AND pay for it out of your own pocket (make sure this part is evident early in the conversation)...this goes a long way and people open up like this. I have done this...
  39. People like choices. I would recommend that you...

    People like choices. I would recommend that you sit down with the customer and discuss what appears to have happened currently and in the past.

    If the customer wants to use you AND his son, no...
  40. Replies
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    6,194

    Try it on a hospital when surgery is happening....

    Try it on a hospital when surgery is happening. The switch gear transfered because of the chiller starting up. It took about 8 seconds to transfer to the generator and provide power. It felt like it...
  41. Thread: Favorite VFD

    by jayguy
    Replies
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    6,360

    let's try it as an attachment. let me know if...

    let's try it as an attachment. let me know if that doesn't work either.
  42. That reminds me of a story... I was doing a PM...

    That reminds me of a story...

    I was doing a PM on a large outdoor make up air unit. I put my manometemonnit and checked everything out...all ok. Took my stuff off and forgot to put the 1/4" MPT...
  43. Replies
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    6,194

    I think that you probably were the straw that...

    I think that you probably were the straw that broke the camels back on the MRI. Did YOU break it? Probably not. My guess is that you caused the failure before a good thunderstorm could get...
  44. Thread: Static Pressure

    by jayguy
    Replies
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    1,244

    It sounds more like the OP wants an airflow...

    It sounds more like the OP wants an airflow tutorial. Static pressure readings are easy to misinterpret.

    While taking the measurements is USUALLY pretty easy and straightforward, you can get...
  45. Thread: Favorite VFD

    by jayguy
    Replies
    49
    Views
    6,360

    If the bus voltage is good, the drive caps are...

    If the bus voltage is good, the drive caps are good...FOR THAT LOAD. At higher loads, the caps may not be good enough and you would start to fail on a drive output fault that would affect all of the...
  46. Thread: Favorite VFD

    by jayguy
    Replies
    49
    Views
    6,360

    attached is what your drive output kind of looks...

    attached is what your drive output kind of looks like...561631

    as you can see, your regular ol' DMM isn't going to be able to accurately interpret the voltage. secondly, your regular ol' DMM will...
  47. Replies
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    lots of wholesale houses sell the Anderson...

    lots of wholesale houses sell the Anderson Forrester kits...its what i use.

    http://andersonforrester.com/product/gauging-kit-drills-40-80-heavy-shank-metal-box/
  48. Replies
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    I have drilled them out but not very many times....

    I have drilled them out but not very many times. Make sure you get a quality orifice drill bit set.
  49. Replies
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    730

    I am not sure where you are physically located,...

    I am not sure where you are physically located, however, 77F year round out of a cooling tower might be difficult. But you are correct, it is possible that you could have that water temp a lot of the...
  50. Replies
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    I called it! Sorry but I couldn't resist. I...

    I called it!

    Sorry but I couldn't resist. I don't know anything about that chiller.
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