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  1. Thread: R290 VS R22

    by jayguy
    Replies
    25
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    4,468

    You wouldn't have to worry about whether there...

    You wouldn't have to worry about whether there was a leak or not! Your nose could find it!
  2. Thread: Dry coolers

    by jayguy
    Replies
    4
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    219

    It depends on your application. I have an...

    It depends on your application. I have an application where they put 212F glycol to it until it gets as low as possible, then they shift the valves to the chiller to bring the process down to 26F....
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    934

    This really is an issue. On the multiple fan...

    This really is an issue. On the multiple fan units, the fans are staged. When another fan needs to be brought on, all fans are temporarily shut off, as they coast down a little, this allows the next...
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    where the watt meters will really shine is in the...

    where the watt meters will really shine is in the rebuild/remanufacture arena. the curve charts assume that the originally designed motor for that compressor will be installed everytime. i do not...
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    99% of the time this is sufficient and your meter...

    99% of the time this is sufficient and your meter will read the accurate capacitance....that 1% of the time is where it counts. If all is OK when I PM a unit, then I measure the cap with my meter and...
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    I own a power meter myself and find it...

    I own a power meter myself and find it invaluable, however, concerning the compressor curve chart, the amperage that is stated should include the power factor change under the various situations. I...
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    Crap-ass Trane, excuse me, I meant to say...

    Crap-ass Trane, excuse me, I meant to say Yellowrock Trane pretends to customize already built/standard items for Trane to meet specs for a particular job. Contact your local Trane dealer to get the...
  8. Agreed and ditto.

    Agreed and ditto.
  9. You may be one of the few that provides quality...

    You may be one of the few that provides quality rebuilds...but I don't know either way. I do not like any of the rebuilds, even from the OEM's. Perhaps we have different definition of what a rebuild...
  10. see the "6DS1-4000 inrush.pdf" attachment. ...

    see the "6DS1-4000 inrush.pdf" attachment.

    this is the inrush current of all 3 phases of a Copeland, 6DS1-4000-FSU, 200 VAC, 153 RLA, 660 LRA, across the line starting compressor.

    as you can...
  11. What I am discussing and what you are...

    What I am discussing and what you are saying...same thing. Inrush current isn't going to be 10 times LRA.

    It will barely be 6 times RLA or FLA in most cases.
  12. Damaged insulation would definitely show up with...

    Damaged insulation would definitely show up with a meg test if done right.

    As for 10x the LRA...nope. The only way to have a current greater than LOCKED ROTOR on a non-vfd motor is to have a dead...
  13. Did YOU milliohm and meg the compressor? ...

    Did YOU milliohm and meg the compressor?




    AH! Now we are getting somewhere.
  14. Replies
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    711

    it's belt driven...why not just re-sheave it?

    it's belt driven...why not just re-sheave it?
  15. Replies
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    582

    nothing wrong with the fusible plug...it was just...

    nothing wrong with the fusible plug...it was just exited to see you! it would have returned to normal after you left.
  16. Replies
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    436

    You won't find THAT tee. As Buford said, call...

    You won't find THAT tee. As Buford said, call Trane.
  17. so you tripped the circuit breaker at 38.5...

    so you tripped the circuit breaker at 38.5 amps...not LRA? those are 2 very different things and would indicate very different issues.

    if you ran for a short period of time and then the compressor...
  18. You say it went out on LRA...how is that? Blew...

    You say it went out on LRA...how is that? Blew the fuses? Tripped a breaker? My guess is that you don't have any oil...brazed the oil equalizer tube shut?
  19. Replies
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    239

    I know you might not care, but why do they want...

    I know you might not care, but why do they want it changed over? I hope it isn't because of the cost per pound. What you are describing will buy lots and lots of R22 in the future.

    If they just...
  20. Replies
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    1,087

    It WAS me! I thought I was being quite the skamp...

    It WAS me! I thought I was being quite the skamp when I posted it like that...now that it has been a few days since anyone called me on it...I feel stupid.

    Here's the thread:...
  21. Replies
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    1,087

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

    Someone once posted a lot of info on discharge superheat around here somewhere.
  22. Replies
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    628

    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.
  23. Replies
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    628

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

    Yes. Outdoor air temp sensor needs to be installed and an EPROM upgrade kit.
  24. Replies
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    628

    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?
  25. Replies
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    774

    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...
  26. Replies
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    774

    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...
  27. 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...
  28. 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!!!!
  29. Replies
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    1,661

    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.
  30. Replies
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    902

    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...
  31. Replies
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    1,193

    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...
  32. Replies
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    474

    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...
  33. Replies
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    668

    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...
  34. Thread: Yes, I am a God

    by jayguy
    Replies
    45
    Views
    1,851

    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.
  35. Thread: Yes, I am a God

    by jayguy
    Replies
    45
    Views
    1,851

    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".
  36. Replies
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    6,614

    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...
  37. Replies
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    6,614

    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...
  38. Replies
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    6,614

    "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.
  39. Thread: Trane Chiller

    by jayguy
    Replies
    7
    Views
    774

    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...
  40. Replies
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    6,614

    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.
  41. Replies
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    1,656

    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...
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    2,661

    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...
  43. Replies
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    1,559

    I checked that out first...it is the saturation...

    I checked that out first...it is the saturation temperature.
  44. Replies
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    1,559

    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...
  45. Replies
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    1,005

    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...
  46. Replies
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    1,559

    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...
  47. Replies
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    1,005

    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...
  48. Replies
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    1,005

    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.
  49. 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...
  50. 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...
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