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  1. Replies
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    are there other air handlers with secondary loops...

    are there other air handlers with secondary loops ? may be pumps were changed and one pump is over powering another. or maybe as simple as a clogged strainer good luck
  2. Thread: trane rtu

    by cool frog
    Replies
    6
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    858

    the only thing i could think of is to blow nitro...

    the only thing i could think of is to blow nitro into evap coil from suction line to try to clear the restricted orfice-good luck
  3. Replies
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    5,036

    by front seating the suction service valve that...

    by front seating the suction service valve that compressor should be able to pump down to about 20 inch. vac. on the suction side of the compressor regardless of what charge is in the unit. if it...
  4. Thread: UA STAR

    by cool frog
    Replies
    24
    Views
    3,405

    local 475- New Jersey my company...

    local 475- New Jersey

    my company had us take the nate test a few years ago and i found it pretty easy. Now they are pushing the star test. We took it in october and only 50% of the...
  5. Replies
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    887

    i think a friend of mine has one of these systems...

    i think a friend of mine has one of these systems in his house that was built in 1920. the compression tank is in the attic and is open through the roof . its nothing more than a storage tank for...
  6. Replies
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    cut out the old shaft ,cut the new one in...

    cut out the old shaft ,cut the new one in workable lengths and use shaft couplers. just make sure that all is lined up perfect- mcmaster sells a whole array of shaft couplers. good luck
  7. Replies
    3
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    989

    and one is in a vacuum and one isn't

    and one is in a vacuum and one isn't
  8. Replies
    11
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    1,037

    monsen is a good company to work for-low stress

    monsen is a good company to work for-low stress
  9. Replies
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    67,327

    stay bright solder has about the same strenght as...

    stay bright solder has about the same strenght as a brazing alloy that has 5% silver.
    as for the flux goes if it is for refrigeration/air conditioning work it should have "no" acid.
    when i...
  10. Replies
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    959

    you will still be able to buy r22 long after they...

    you will still be able to buy r22 long after they stop making it, i work on large chillers and they stopped making r11 about ten years ago and they have such a stock pile of r11 from all the...
  11. Replies
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    2,451

    no problem fixerup. i had 5 compressors with bad...

    no problem fixerup. i had 5 compressors with bad check valves in them. it took me a while to figure it out.
    remember if you have low discharge super heat than your suction superheat must be low...
  12. Replies
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    2,451

    TO FIXERUP if you have bad discharge...

    TO FIXERUP
    if you have bad discharge check valves is that on the off cycle like overnight your refrigerant will/can migrate from your condenser through your compressor and over fill your...
  13. Replies
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    18,446

    local 475, NEW JERSEY

    local 475, NEW JERSEY
  14. Replies
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    2,451

    if these are the carrier screws that i think they...

    if these are the carrier screws that i think they are then i would check my discharge check valve
  15. hey guys, just got back from training on these...

    hey guys, just got back from training on these compressors up in canada. i'm also a little leary to new technolegy but these are pretty bullet proof. on board computer controls bearings and inlet...
  16. Replies
    91
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    35,587

    hey guys, i had the same problem with a smaller...

    hey guys, i had the same problem with a smaller flowtronic and it was caused by the unit not configuered properly. my unit was configuered for txv's when it should have been for exv's. did you go...
  17. Replies
    16
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    5,258

    if you had a restriction your superheat would be...

    if you had a restriction your superheat would be high.
    also,when troubleshooting never take anything for granted.
    you might have to look at the duct system for restrictions.

    youcould have a...
  18. Replies
    49
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    4,081

    double bubble asked the first right question,what...

    double bubble asked the first right question,what type of chiller is this?
    a recip compressor doesn't know or care what type of condenser it has, just as long as it is sized properly....
  19. Replies
    11
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    2,318

    that oil is big bucks to

    that oil is big bucks to
  20. Replies
    5
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    876

    i got the clog in the low temp heat exchanger...

    i got the clog in the low temp heat exchanger broken up. now its just trimming the charge
  21. Replies
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    2,318

    it depends if you have the optional sution...

    it depends if you have the optional sution buterfly type service valve. if you do, just recover everything into the condenser and look for that nice big service valve on the bottom of the oil...
  22. Replies
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    2,587

    buy a wet bulb indicator. they never go out of...

    buy a wet bulb indicator. they never go out of calibration and they either work or they don't because of broken glass. somebody put a posting a couple of months ago and i can't remember the brand...
  23. Replies
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    726

    also if you have a mixing or tempering valve i...

    also if you have a mixing or tempering valve i would look at that if it had worked in the past. mineral deposits have a tendency to clogg these up
  24. Replies
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    876

    thanks for the advise r718. 1- as...

    thanks for the advise r718.
    1- as for the 140 deg. i'm pretty sure its because of internal overloads on solution pump.

    2- i had to have the high temp...
  25. Replies
    5
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    876

    i have a carrier 16jt 500 tons(mexico vintage)...

    i have a carrier 16jt 500 tons(mexico vintage) that my cutomer locked up on me. after having hi-temp generator retubed and getting the machine up and running my boss sends me there on a friday night...
  26. Thread: York EZ Zone

    by cool frog
    Replies
    3
    Views
    1,135

    i would try there web site. sometimes you can get...

    i would try there web site. sometimes you can get info online that they tell you is not available.
  27. Replies
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    2,691

    yea, ihad a small nick in my hand get infected...

    yea, ihad a small nick in my hand get infected real bad. whole hand swelled up
  28. Thread: C3 & C4 oils

    by cool frog
    Replies
    3
    Views
    767

    you don't have to worry about wax build up. c4...

    you don't have to worry about wax build up. c4 oil is the same as 4gs oil and national 300. it is a 300 weight oil as apossed to c3 being a 150 weight oil.
  29. Replies
    3
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    1,579

    system was designed for NH3 but before start up...

    system was designed for NH3 but before start up was converted to r22. same type of system though
  30. Replies
    18
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    1,684

    besides, every tower manufactuer will also tell...

    besides, every tower manufactuer will also tell you to do it this way
  31. Replies
    18
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    1,684

    to keep mineral build up from forming on tubes...

    to keep mineral build up from forming on tubes you want pump to always run before fan starts and fan to shut off before pump shuts off. if this doesn't sound so important to you i can tell you of an...
  32. Replies
    11
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    1,617

    the purpose of the power head assy. on the txv is...

    the purpose of the power head assy. on the txv is to sense leaving evap. refigerant temp,thus always trying to maintane a steady superheat . this is what makes a txv differant from an automatic...
  33. Replies
    3
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    1,579

    i had a verry strange service call the other day....

    i had a verry strange service call the other day. i was called up because this fes m/n 19L compressor was shut down for no oil in either sight glass.the operaters had shut it down and started up the...
  34. Replies
    0
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    739

    i had a verry strange service call the other day....

    i had a verry strange service call the other day. i was called up because this fes m/n 19L compressor was shut down for no oil in either sight glass.the operaters had shut it down and started up the...
  35. Replies
    5
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    921

    student2817 are you asking in general or are you...

    student2817 are you asking in general or are you refering to a specific type of system? jeffflk is refering to a large system with probly screw compressors. there are small chillers that use nh3 as...
  36. during building of the hoover or boulder dam,what...

    during building of the hoover or boulder dam,what ever they bcall it these days. they ran piping into the concrete as they poured it to speed up the curing process.carrier designed these chillers....
  37. Replies
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    1,114

    i've only read about steam jet cooling. so with...

    i've only read about steam jet cooling. so with that said i'll give my opinions for what there worth. the pros are i would think is ease of operation-little or no moving parts. and if waste steam...
  38. Replies
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    1,607

    100 ppm

    100 ppm
  39. Replies
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    2,559

    as your suction pressure goes up keep an eye on...

    as your suction pressure goes up keep an eye on your slide valve indicator rod. if you have a bad ring on your slide valve it will release hydrolic pressure and if i remember right you should start...
  40. Replies
    7
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    1,159

    what i did was install a cold trap before the...

    what i did was install a cold trap before the vacuum pump to keep oil fresh without opening balast. then i set leak detector in sniffer mode and conected a hose to the outlet of vacuum pump and...
  41. Replies
    7
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    1,159

    well, i found the leak. i used shaving cream. my...

    well, i found the leak. i used shaving cream. my shop had sent down a "gun" used to pressurize each tube but was unable to use it. so what i did was pressurized the machine and filled the end of each...
  42. Replies
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    3,619

    if i had to work on a low pressure machine i...

    if i had to work on a low pressure machine i would prefer r-11. your not supposed to inhale r-123 or get any oil on your skin. some guys and companys don't follow these saftey guide lines and it...
  43. Replies
    7
    Views
    1,159

    i have a carrier 16jt absorber. i'm doing a...

    i have a carrier 16jt absorber. i'm doing a vacuum leak check with helium. found one of the leaks in high temp generator. now i must determine if its in the tubes (steam) or tube sheet. any...
  44. Replies
    11
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    1,154

    if i know what your talking about it has 1 puge...

    if i know what your talking about it has 1 puge eductor.the operators normaly get enough air out of the machine to keep it running
  45. Replies
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    1,154

    i'v evacuated with pump doing a bubble count.i...

    i'v evacuated with pump doing a bubble count.i can get it down to no bubbles and it will be good for a while. one mistake i made was to change a diaphram valve on absorber section that was split on...
  46. Replies
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    1,154

    m/n-16jt854-36495

    m/n-16jt854-36495
  47. Replies
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    1,154

    this machine runs at 125 psi steam

    this machine runs at 125 psi steam
  48. Replies
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    1,154

    i also had cycle gaurd activated due to high ref....

    i also had cycle gaurd activated due to high ref. levell. i pulled noncondensables from absorber section (air) and my ref. levell went back to normal-thanks again
  49. Replies
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    1,154

    helium test

    the machine is a 16jt if that makes any difference as far as leaks go.this machine is in central jersey.thanks for all the great info.

    how would you helium leak check the...
  50. Replies
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    1,154

    hope your solution was a bright yellow and not...

    hope your solution was a bright yellow and not clear as you described it. Did you leak test the generator bundle? Its not rolled in like other machines.
    __________________
    I survived the first...
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