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Type: Posts; User: chiller rob

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  1. Replies
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    2,996

    What OEM manufacture is doing vsd scroll? Trane?...

    What OEM manufacture is doing vsd scroll? Trane?

    I was aware of the danfos design but wasn't aware of an oem in the US to pick it up yet... The only thing special about the compressor is the...
  2. Replies
    2
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    474

    I agree with a few exceptions... I would...

    I agree with a few exceptions...

    I would prefer that the pump is enabled/ disabled with the system and the fan cycles normally for temperature control. Cycling the pump under load as part of the...
  3. Hello cool aid... look at the attached and...

    Hello cool aid...
    look at the attached and study...
    at this point of your career focus on the theory of operation...
    if you can grasp the concepts slowly you will be able to transfer those over to...
  4. Replies
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    9,448

    8632, yes, yes, yes and yes... there is good...

    8632,
    yes, yes, yes and yes...

    there is good reason for this evaluaton process...

    this technology requires special attention, good pre-job evaluation, engineering and installations to ensure...
  5. Replies
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    677

    jayhawker is right. we always do carefull...

    jayhawker is right.

    we always do carefull evaluations on the equipment and in many cases have work history on the plant prior to proposing full coverage...

    sometimes we take insurance out on...
  6. Replies
    14
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    1,126

    i am not familiar with the latatude but i would...

    i am not familiar with the latatude but i would guess the vsd (i think they call it the mustang) would be somewhat similar to the viper drive...

    we had a similar problem on a mustang and it...
  7. these type of trips are always a challange... ...

    these type of trips are always a challange...

    one of the first thing that was taught to me about reset relays was to pull them off the back of the control panel and let them hang on the wiring...
  8. 5 starts/hr

    5 starts/hr
  9. Replies
    58
    Views
    9,448

    flange... it happens... there are two...

    flange...

    it happens...

    there are two motor cooling sols on all compressors that i have seen...
    i doubt that it is an electrical problem but it is worth checking out...

    more likely it is...
  10. Replies
    16
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    2,881

    i had this happen to me the other day on a R22...

    i had this happen to me the other day on a R22 retrofit compressor...

    couple of questions...

    is the off line compressor sweating while the machine is running?
    do you hear the audible clunk...
  11. Replies
    58
    Views
    9,448

    hvacr... expansion valve control, head...

    hvacr...

    expansion valve control, head pressure control, and system demand component control(s) are just as important as compressor control...

    if any of these variables start to hunt the...
  12. Replies
    14
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    1,322

    last one i got into the capacity control rod...

    last one i got into the capacity control rod looked like a cork screw.

    it was warn almost in 2 in the places where the spring (harder material than the shaft) had calapsed on the shaft and stayed...
  13. Replies
    6
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    588

    that is great question and great answers... ...

    that is great question and great answers...

    that payback info is quite interesting...

    i have never installed any of these but i have seen them with my megger in a few applicaitons...

    the one...
  14. Replies
    15
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    2,285

    no, i have not been that far north... i hear...

    no, i have not been that far north...

    i hear that m soft has put a few in and i have heard of a couple of retros up there....

    word is there are a few changes to the kiltech that are going to...
  15. Replies
    15
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    2,285

    Is this an aircooled machine?

    Is this an aircooled machine?
  16. Replies
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    2,285

    good to see you stephen... i think of you...

    good to see you stephen...
    i think of you often...
    hope all is well and say hi to family for all of us...
    chiller rob
  17. Replies
    15
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    2,285

    a bmc is a generic fault... the kiltech...

    a bmc is a generic fault...

    the kiltech control panel will register the fault as a bmc because the compressor had some issue and was locked out...

    what needs to happen is reboot the 480 to the...
  18. Replies
    45
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    2,821

    mr. customer, dont jump anything out!!! ...

    mr. customer,

    dont jump anything out!!!

    the advise given above is a recipe for disaster and will get some one hurt or killed...

    the machine you are talking about is always rebuilt on...
  19. Replies
    17
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    1,796

    Randy is right... if you are using chilled water...

    Randy is right...
    if you are using chilled water reset, this could further cause cycing issues...

    Good luck
  20. Replies
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    831

    rs 485 error means you are not communicating to...

    rs 485 error means you are not communicating to one of your compressors...

    on the main screen switch view from the machine picture to the compressor information. this data (about 5 lines) will be...
  21. Replies
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    3,572

    2700 wow thats going to hurt... figure 6 bucks a...

    2700 wow thats going to hurt... figure 6 bucks a pound that 16 k or so...

    I could not tell alot from the picture... was that the oil cooler?

    i had the same thing happen to a yk chiller... ...
  22. Replies
    23
    Views
    2,154

    I know i talk alot about this little compressor...

    I know i talk alot about this little compressor but at 16 cents at KW that is were my market is...

    the utilities out here are paying up to 50% of the project in rebate...

    once you see these...
  23. Replies
    23
    Views
    2,154

    This machine is a prime canadate for Tubocor...

    This machine is a prime canadate for Tubocor retrofit...
    if you are R22 and can spare some tonnage you could install new linear float and convert to 134A...

    pop a couple of 125 ton compressors on...
  24. Replies
    9
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    798

    ST65 things are going well... alot more...

    ST65

    things are going well...

    alot more maintenance work and less projects for now...

    i would think KC would be good place to work...

    as for the traffic you just have to know were you're...
  25. Replies
    11
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    1,865

    one thing about being oilless is that other parts...

    one thing about being oilless is that other parts of the system have to catch up with this technology.

    what we are seeing with the new equipment is that the exvs are hanging up due to lack of...
  26. Replies
    9
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    798

    i does seem odd that the same thing would happen...

    i does seem odd that the same thing would happen at the same time at two oposite sides of the country...

    i am not claming to know everthing i should about the millennium, but a couple of thoughts...
  27. Replies
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    409

    you can look into getting a data logging...

    you can look into getting a data logging system...

    try hobo or onset.com in you search...
  28. Replies
    4
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    937

    based on your load and size of the machines it...

    based on your load and size of the machines it may be possible to put turbocors on your existing vessels.

    good luck...
  29. Replies
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    2,001

    i got a call similar to this this year... machine...

    i got a call similar to this this year... machine off no oil...

    went to look it over and the facilities staff said that they had pumped 2 gal of oil in it and ran it the day before and could not...
  30. Thread: Hanbell

    by chiller rob
    Replies
    7
    Views
    851

    thanks... chiller mekanik... i was also...

    thanks... chiller mekanik...

    i was also thinking of asking you what your opinion was on using liquid line temp as means for ramping vfd retrofits on low pressure centrifs...

    a well respected...
  31. Thread: Hanbell

    by chiller rob
    Replies
    7
    Views
    851

    i was suprised that they actually came out and...

    i was suprised that they actually came out and recommended that they should not unload less that 50% capacity for slide valve issues due to low velocity and lubrication...

    that starts some major...
  32. Replies
    22
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    1,739

    these high speed carriers can be a handful. i...

    these high speed carriers can be a handful. i have talked with others in depth about surging issues. does the machine have hot gas? that may be useful...

    also the machine charge may be an...
  33. Replies
    3
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    786

    some of our sales staff use a system called...

    some of our sales staff use a system called accupro...
    i am not familiar with it personally put i do see the numbers and its in the ball park...

    i think does residential also...
  34. Replies
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    900

    roger that... most of the GT's i see the...

    roger that...
    most of the GT's i see the condenser coils are shot anyway...
  35. Thread: 30HL

    by chiller rob
    Replies
    26
    Views
    3,221

    i doubt it is a problem with the chiller being...

    i doubt it is a problem with the chiller being that after the valve repair you are seeing this on both circuits...

    sounds like you have a short loop and need to start working on system controls...
  36. Replies
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    1,184

    then let him do it!

    then let him do it!
  37. Replies
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    2,564

    i dont think the size of the chiller was...

    i dont think the size of the chiller was mentioned. but on a larger chiller i would use a jet pump and pipe in an aux circuit for clean up...

    the problem with suction line filters (on smaller...
  38. Replies
    5
    Views
    2,909

    i was always taught that a gear set will cost 7%...

    i was always taught that a gear set will cost 7% effeciency.

    it has been my exeperience that multistage compressors are much more stable and dont tend to surge as easy...

    futher, multistage...
  39. Replies
    4
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    739

    i just ran into this on a york chiller... air...

    i just ran into this on a york chiller... air cooled scrolls...
    you need to see if you even have discharge pressure transducers... they sell it as an option...

    without them you will have no...
  40. Replies
    4
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    769

    not alot of feeback so far... i do have some...

    not alot of feeback so far...
    i do have some ideas for you but not willing to put them out on open forum...
    email me...
  41. Replies
    4
    Views
    769

    one other thought... if you can get the monitor...

    one other thought...
    if you can get the monitor running, try to recommishion the compressor..
    that may bring it back...
  42. Replies
    4
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    769

    i have not seen this before either... let me...

    i have not seen this before either...
    let me make some calls...
    i dont think there is anything that you can from a hardware standpoint...

    ill get back to ya...
  43. Replies
    8
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    1,055

    this particular unit has concrete walls real...

    this particular unit has concrete walls real close to the condenser and has some recirculating going on...

    so i have been having a problem staging fans to begin with as this unit does not have the...
  44. Replies
    9
    Views
    1,212

    interlock the chiller with the aux of the primary...

    interlock the chiller with the aux of the primary chilled pump contactor and it wont do that any more...

    good luck
  45. Replies
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    1,055

    thanks randy s... i get it... that and a...

    thanks randy s...

    i get it...

    that and a little lube 1 (dielectric grease) wouldn't be bad while were at it...

    i think we will pull some new wire and try the above and see what happens......
  46. Replies
    8
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    1,055

    another thought... what if i put in a fixed...

    another thought...

    what if i put in a fixed resistor and tested?... what effect would i have on exv control...

    the main control for the exv is superheat... under what conditions would head...
  47. Replies
    8
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    1,055

    no nuts... we have soldered connections under...

    no nuts... we have soldered connections under crimp...

    i will be rechecking the output voltage...

    if that checks i quess we pull new wire...

    i sure wish that they would use a differant style...
  48. Replies
    8
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    1,055

    RTAA B90 cond temp sensor error

    RTAA 300 machine...

    circuit 2 generating B90 (either when circuit shuts down calls for start) dont know which...

    when resetting the circuit, all starts up ok and controls fans ok... readings...
  49. Replies
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    4,528

    i dont have any latatude's but have been hearing...

    i dont have any latatude's but have been hearing a whole lot about bad level sensors...
  50. Replies
    4
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    747

    we just had a millinium panel that was dropping...

    we just had a millinium panel that was dropping to 3.5 volts with multiple outputs active...

    actual problem chiller not making oil pressure... could run oil pump in test mode but on startup would...
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