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  1. Thread: Boom

    by Ph-D
    Replies
    36
    Views
    3,322

    Proper Evacuation

    The responses to this have been very interesting. If the service tech had drawn a PROPER evacuation on the isolated compressor this would have removed any refrigerant that could of been in the...
  2. Replies
    5
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    1,826

    HP & MP points of clarity

    Dupont developed these refrigerants in the early 90'S.

    MP39 & MP66
    MP = medium pressure
    39 is the last two digits of the assigned research number...
  3. Replies
    2
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    867

    Andy Schoen leaving Sporlan !!!

    Yes it is true ... Andy will becoming a compressor expert out of Ann Arbor MI.
  4. Replies
    1
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    928

    A Canadian's view of Mt. Rushmore

    To all my friends at this wonderful commerical information network. I just thought that this being your Thanksgiving week that you may wish to see how Canadian see Mount Rushmore. Have a great and...
  5. Replies
    2
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    941

    Carrier 19DR is a dual compressor unshell chiller...

    Carrier 19DR is a dual compressor unshell chiller with either two 19DK or 19DM compressors on the unit. You must first find out which comressor is on this unit. To find this out read, the compressor...
  6. Replies
    7
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    1,236

    IRD Training program

    IRD had a great vibration training program several years ago, I am not sure if they still offer this training. Their training program was the industry standard several years ago, today I'm not...
  7. Replies
    1
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    626

    Generally accepted

    If the chiller has been selected based on ARI 550 standard the following would be correct. The flow rate through the cooler should be 2.4 gpm (US) per ton and the condenser flow rate should be 3.0...
  8. Thread: 19XR

    by Ph-D
    Replies
    13
    Views
    1,191

    More details needed

    Ther are three versions of 19XR centrifugal chillers. The original 19XL units with slight modifications and PIC I controls, then 19XR R-134a chiller with PIC control II, currently there are two...
  9. Replies
    4
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    1,061

    A Note of Caution

    Carrier produced a significant number of 48DA and 50DA series roof top unit of the 006 capacity (5 ton) were R-500 units. You may wish to double check the units nameplate. If someone put R-22 into a...
  10. Thread: 402a

    by Ph-D
    Replies
    22
    Views
    1,236

    R-402A or R-402B

    R-402A and R-402B contain the same components but in reversed percentages. R-125, R-290 and R-22. R-402A component percentages are 60-02-38 while R-402B is 38-02-60. R-402A will work in your ice...
  11. Thread: YK Flow Rates

    by Ph-D
    Replies
    11
    Views
    1,261

    Chiller performance standard

    The north American manufacturers of both centrifugal and screw compressor chillers produce chillers that conform to ARI Standard 550. The selection of the chiller may vary from the standards but this...
  12. Thread: 17 Fa

    by Ph-D
    Replies
    10
    Views
    806

    If we dig we shall find

    It took me a little time to find the attached drawing but I believe that it will answer your question regarding the clearances of a R-22 float assembly. Please keep in mind that a ton is a ton is a...
  13. Thread: 17 Fa

    by Ph-D
    Replies
    10
    Views
    806

    Caution !!!!!

    With the literature that was previously mentioned keep in mind that the clearances stated in SM-022 are for R-12 machines not R-22 machines. The clearances that you need are published in 19XL-1SS...
  14. Replies
    4
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    585

    Not too Bright ...

    I forgot to mention that this seminar will be of Saturday April 18, 2009 from 8:00 AM to 4:30 PM. Sorry about forgetting to mention this important information, lets just put it down as :mad:old age.
  15. Replies
    4
    Views
    585

    Centrifugal and Screw compressor seminar

    A couple of weeks ago I made a request if anyone had heard of this upcoming seminar. I have aquired the detail and thought that they should be passed on if others would like to attend this program....
  16. Replies
    4
    Views
    702

    New Economizer Service Literature

    There in a new piece of service literature that has been produced by Honeywell that is a complete "In-The-Field Tool" for servicing their economizer controls. This piece of literature is titled...
  17. Replies
    6
    Views
    1,600

    Centrifugal chiller training

    Has anyone heard that there will be a centrifugal / screw chiller training program being presented in the greater Philly area on Saturday April 18th? If anyone could shed some light on this program...
  18. Something to consider !

    It sounds like that who ever serviced the machine before did not have R404A so they put R-507 into the system. One thing that you may wish to consider would be to see what refrigerant the TEV are...
  19. Replies
    8
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    1,573

    Please consider the following

    I have not responded to my original post as travel has keep me extremely busy lately. I have read the various responses with great interest and it is apparent that there is an abundance of knowledge...
  20. Replies
    8
    Views
    1,573

    TRANE - CDHF - Negative approach temperature ?

    The following quote is taken from a piece of TRANE literature (CDHF-SVU01C-EN) ON PAGE 41.

    "When one compressor is operational the approach value will be similar to those found on single...
  21. Thread: 19dk

    by Ph-D
    Replies
    21
    Views
    1,311

    Why Not ..

    That is one reason why you need motor terminal insulation and if your condensing liquid temperature is too cold ( too much sub cooling) the rear motor cooling nozzle will keep the terminal too cold...
  22. Thread: Carrier XL23

    by Ph-D
    Replies
    23
    Views
    2,222

    23 XL correction notes

    After checking my notes to confirm a few older details please consider the following:

    1994 23XL are an R-22 unit .. manufactured by Ingersol Rand.
    See literature 23XL 1SS for overhaul details.
    ...
  23. Thread: Carrier XL23

    by Ph-D
    Replies
    23
    Views
    2,222

    Remanufacturing Carrier Screw Compressors

    I reas this post with great interest as the early Carrier 23XL screw compressors were manufactured by Ingersol Rand. This unit is field rebuildable, Carrier produced a video and text showing the...
  24. Replies
    2
    Views
    864

    OEM literature

    The piece of literature that you need is available from any Carrier Sales office. Ask for 19XRV-2SS, this literature covers all 19XR compressors. The clearances, fits and torque values are all listed...
  25. Replies
    52
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    3,879

    This is a loaded question

    If the system containes a single component refrigerant like R-22 or R-134a the coldest spot is just as the last drop of refrigerant changes state in the evaporator from a liwuid to a vapor. If the...
  26. Thread: Pics

    by Ph-D
    Replies
    28
    Views
    5,321

    Lubricant analysis ?

    Very interesting to see a system that one might say has not had a preventative maintenance program that consisted of frequent lubricant analysis. We look forward to seeing more pictures from this...
  27. Replies
    15
    Views
    3,072

    19FA Teardown film

    Carrier produced two large 16mm reels of complete compressor teardown of the 19/17FA barrel compressor. These films were converted to !/2 inch VHS tape. This tape was done be an X Carrier employee...
  28. Replies
    5
    Views
    1,796

    R-507b ?

    At minus 70F I believe you mean R-508B, and that refrigerant is also know as SUVA 95 and can be purchased at any refrigerant wholesaler selling DuPont refrigerant. P/T charts are also in the ASHRAE...
  29. Replies
    1
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    2,396

    Something to think about

    R-170 refrigerant is indeed a speciality refrigerant, Ethane is an A3 refrigerant making it highly flammable. This refrigerant was still available through Matheson Gas Products. Last year Matheson...
  30. Centrifugal / Screw Operation and Maintenance Seminar

    Gentlemen and of course any ladies that may be out there.

    Has anyone heard or did anyone go the a two day Centrifugal and Screw chiller Operation and Maintenance that apparently was held in the...
  31. Replies
    22
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    2,025

    It was with interest and disappointment that I...

    It was with interest and disappointment that I read Mr. Yost replies. These replies demonstrate a text book education with limited, if any direct field experience and know how. His narrow...
  32. Replies
    22
    Views
    2,025

    Partial azeotropic mixture

    The air we breath is approximately 78% nitrogen, if we allow air toenter a refrigeration system regardless of the units size we stand a good chance of forming a partial azeotropic mixture with...
  33. Thread: R-500 History

    by Ph-D
    Replies
    9
    Views
    4,991

    Carrene 7

    R-500, also know as Carrene 7 is an azeothropic refrigerant that was originally developed by Carrier for use on equipment that was to be run on 50 cycle power. R-500 is a mixture of R-12 (73.8%) and...
  34. Replies
    9
    Views
    1,391

    ARI Standard 550

    Chillers are manufactured to the latest ARI Standard 550. This standard states that the stated capacity of the chiller is based on a Cooler flow rate of 2.4 gpm and a condenser flow rate of 3.0 gpm....
  35. Replies
    5
    Views
    771

    Carrier 17 Series

    Depending on the age of the 17 series unit the following is true:

    17M or 17MA are 2 stage open drive centrifugal compressors
    !7P or 17PA are 3 stage open drive centrifugal compressors
    17S or...
  36. Replies
    66
    Views
    5,790

    Chiller Seminar April 2008

    With all this talk about chiller program you may be interested in a two day long chiller operation and maintenance program coming to the Boston area in the Spring of 2008. To the best of my knowledge...
  37. Yes you are correct, if liquid and vapor are...

    Yes you are correct, if liquid and vapor are present the published thermodynamic tables that are produced will be correct. This is only true where you have an interphase of liquid and vapor. The...
  38. Thread: 19ea retrofit

    by Ph-D
    Replies
    5
    Views
    848

    Caution with Blends in Flooded Units

    Blended refrigerants such as MP39 (R-401A), R-409A or others do not perform well in flooded applications, they will fractionate and the lower boiler will boil off first. Large flooded applications...
  39. Replies
    3
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    815

    Hope the following information is what you...

    Hope the following information is what you desire. This information is from an engineering book that was available a couple of years ago from DuPont Canada. This information is based on 100 feet of L...
  40. Thread: Carrier 19 DR

    by Ph-D
    Replies
    4
    Views
    2,104

    The Carrier 19DR low pressure centrifugal chiller...

    The Carrier 19DR low pressure centrifugal chiller is a very interesting unit. Before we can answer your question additional information is needed, for example are the compressors DK or DM units, is...
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