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  1. Replies
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    Hi. With so many problems on this float valves,...

    Hi.
    With so many problems on this float valves, does anyone thought to change to Exv controlled by level sensor on CDS?
    This type of refrigerant control is very sensible to flow and temperature...
  2. Replies
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    8,855

    Usually, when you change oil Mineral to POE with...

    Usually, when you change oil Mineral to POE with R07C, there will be a lot of white foam if you still have same/lot MO. If you make a good clean of heatexchangers and pipes, youīll need just 1x...
  3. Replies
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    8,855

    Did you change the oil from RL32H to RL68H?

    Did you change the oil from RL32H to RL68H?
  4. Replies
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    7,830

    If you dont want to have any trouble, change to...

    If you dont want to have any trouble, change to R134a. I almost sure you can change in UCM R22 to R134a. Change the oil, refrigerant charge will be 20% less....and the worst is the 25 to 30% less...
  5. Replies
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    Iīve already done on RTHA300 retrofit to R434a...

    Iīve already done on RTHA300 retrofit to R434a and R422D. Both are similar to R22 and had to open orifices to bigger holes. R434a works better then R422D. But in Europe Fluids with more then 2.500...
  6. Replies
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    4,796

    Im talking about the old mcquay microtech. I...

    Im talking about the old mcquay microtech. I thought it was an old centrifugal....
  7. Replies
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    4,796

    How you manage the control? new one? I think...

    How you manage the control? new one? I think microtech dosent support VFD....
  8. Replies
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    7,830

    That is in case you change orifice to EXV, in...

    That is in case you change orifice to EXV, in this case im just gonna adjust the orifices (bigger holes) and some pressure settings. I think I dont need to change the Current transformers, maybe just...
  9. Replies
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    7,830

    yes. Its a black UCM.

    yes. Its a black UCM.
  10. Replies
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    7,830

    Hi guys, Iīm going to do a retrofit on RTHA215...

    Hi guys, Iīm going to do a retrofit on RTHA215 from R22 to R134a, as it was said before on this post, TRANE recomends to change the current transformers. Can anyone clarify me why is it needed?
    ...
  11. Replies
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    2,065

    Have a similar problem with one of this - it was...

    Have a similar problem with one of this - it was mist eliminator broken on top of oil sump, blocking oil flow.
  12. How is absorber level?

    How is absorber level?
  13. Replies
    7
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    1,723

    but the client is happy now.....

    but the client is happy now.....
  14. Replies
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    10,033

    Go for the compressor Overhaul.

    Go for the compressor Overhaul.
  15. Replies
    51
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    10,033

    Did you open the orifice on evaporator side?

    Did you open the orifice on evaporator side?
  16. Replies
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    10,033

    Your flow is too much....your evaporator should...

    Your flow is too much....your evaporator should be 300m3/h for 500Tons. I curretly finishing an overhaul on CVGF800, the only way I see to answer your question is, or the oring in 1st and 2nd stage...
  17. Replies
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    30,400

    Hi. Please can anyone tell me how to enter the...

    Hi. Please can anyone tell me how to enter the password on a millennium control and change program parameters?

    Thanks in advance.
  18. Replies
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    RTAA EXV is controlled by the difference of the...

    RTAA EXV is controlled by the difference of the two temperature sensors mounted on EXV expansion side and suction. Thereīs no pressure reading, so it will be no problem controlling it with R407C....
  19. Replies
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    2,499

    If the both circuits are equals, some options for...

    If the both circuits are equals, some options for freon dosent come in:
    1) Outside air cold and chilled water hot
    2) not enought vacuum
    3) Nitrogen in circuit
    4) your just charging by one side of...
  20. Replies
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    10,033

    Ok, you took out suction elbow...let's wait for...

    Ok, you took out suction elbow...let's wait for your conclusions. We're looking forward to help you resolving this mystery. Keep this post updated. Good luck with the Carrier 30GB.
  21. Replies
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    You saw the 2stg IGV, did you check if the 1stg...

    You saw the 2stg IGV, did you check if the 1stg IGV is opening and closing? Are you sure that you dont have non condensible gas mixed with R134a?
    Did already checked if orifice that expands to...
  22. Replies
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    10,033

    If you have all pipes/circuit and refrigerant ok,...

    If you have all pipes/circuit and refrigerant ok, check heat exchangers, the problem must be in compressor....don't see other way. Maybe some problem in guide vane, for ex the 1st stage IGV is always...
  23. Replies
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    10,033

    It looks like the chiller has non condesibles...

    It looks like the chiller has non condesibles gases, like Nitrogen. Letīs see....the compressor gets high lift easly, high approach on condenser and high pressure in economiser; the work of the...
  24. Replies
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    7,830

    Please guys, I really need to close the oil...

    Please guys, I really need to close the oil housing on monday, but I also wanted to be more confident on this modification.
  25. Replies
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    7,830

    Hi, the job is almost done. The compressor is...

    Hi, the job is almost done. The compressor is assembled and it just missing the mounting of the oil separator and his housing.

    When I was assembling the piston of the slide valve I came to a...
  26. Replies
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    10,033

    You have two fixed orifices, 1 before economiser...

    You have two fixed orifices, 1 before economiser and other before evaporator. You should check for a block...this chillers are not totally flooded...
  27. Thread: Climaveneta

    by DANI25486
    Replies
    5
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    4,574

    For new W3000 Iīve no idea. The old ones is 9990.

    For new W3000 Iīve no idea. The old ones is 9990.
  28. Thread: Climaveneta

    by DANI25486
    Replies
    5
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    4,574

    Itīs 9990

    Itīs 9990
  29. Replies
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    Iīll do that, as soon as the job is done Iīll kep...

    Iīll do that, as soon as the job is done Iīll kep this post updated. Tks.
  30. Replies
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    Thanks WYLBEK for sharing. And how about the seal...

    Thanks WYLBEK for sharing. And how about the seal between motor and screw rotors, does Trane sell it??
  31. Replies
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    Hi, as you know we retrofit this machine...

    Hi, as you know we retrofit this machine (RTHA300) to R434a, since, the unit works 24 hours/day, it works with good preformance, it had leak on oil thank house and a bad load solenoid however last...
  32. Replies
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    4,523

    Repair photos

    Hi everyone. Whant to thank to all who shared info. It would be a lot more difficult without it.
    Made this repair on last summer. This compressor have 2 angular ball bearing and one of them was...
  33. Thread: R-22 TO 407C

    by DANI25486
    Replies
    46
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    41,414

    Itīs your machine....please keep us updated.

    Itīs your machine....please keep us updated.
  34. Thread: R-22 TO 407C

    by DANI25486
    Replies
    46
    Views
    41,414

    It still working good? Did you change oil to POE?

    It still working good? Did you change oil to POE?
  35. Thread: R-22 TO 407C

    by DANI25486
    Replies
    46
    Views
    41,414

    the oil wont return to compressor....that...

    the oil wont return to compressor....that additive dosent garanty it. R407C isnīt mixible with MINERAL OIL....
  36. Replies
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    4,523

    I do have: Chiller CVGF1000 Serial number: ...

    I do have:

    Chiller CVGF1000 Serial number: G10K02198
    Compressor CCGC1000 Serial number: L10L06461

    If you need more information please let me know.
  37. Replies
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    4,523

    Did you want to say "refrigeration-engineer", I...

    Did you want to say "refrigeration-engineer", I couldnt also find anything....is there any similar compressor to CCGC models that you could send me? I canīt find any information about this compressor.
  38. Replies
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    4,523

    I know it is but I dont have sufficient...

    I know it is but I dont have sufficient previleges to reply in the other Thread about CVGF TEAR DOWN MANUAL.

    I still couldnīt find anything....
  39. Replies
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    2,618

    See if it is this one? ...

    See if it is this one?

    http://eto.carrier.com/litterature/sed/16JB%20PIC%20010-021%20wiring%20diagram%20TuV7.pdf
  40. Replies
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    2,618

    I think that chiller is in fact an EBARA, a...

    I think that chiller is in fact an EBARA, a Japonese brand. Maybe you can find it in similar Ebara chillers.
  41. Replies
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    4,523

    Please. Can anyone help me on this? I really need...

    Please. Can anyone help me on this? I really need this one.
    Thanks.
  42. Replies
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    4,523

    TRANE CVGF1000

    Hi, I need some info for a centravac TRANE CVGF1000 with a CCGC1000 compressor, from 2011. This one has been making a strange mechanical noise, we took the oil filter, it was with a lot of particles,...
  43. Replies
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    4,255

    Yes your wright...what I mean to say was, itīs...

    Yes your wright...what I mean to say was, itīs different to have a float valve then an expansion valve. Look to Carrierīs 30GX and 19XR, both evaporators are flooded, When conmpressor running you...
  44. Replies
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    4,255

    Yes. I mean chillers with a flooded evaporator...

    Yes. I mean chillers with a flooded evaporator and also an expansion device, for example u have Carrier 30GX or Trane RTHA/B/C/D.
  45. Replies
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    4,255

    R22 in Europe is forbidden. If the retrofit...

    R22 in Europe is forbidden. If the retrofit involved the change of Mineral to POE, you shouldnt have oil return problems. About the glide of R407C yes thats a problem for efficency of the HE. However...
  46. MOIDEEN....For your problem you have 2 solutions:...

    MOIDEEN....For your problem you have 2 solutions: install an adiabatic cooling system in condesers fins or increase condeser fans airflow. And then maybe you can put more refrigerant, now with that...
  47. Replies
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    1,649

    How much is the % of EXV opening when itīs...

    How much is the % of EXV opening when itīs running in max operation and the % of input power when compared to the nominal plate? If itīs below, Iīll say 70/80 %, you can increase the heatexchanger...
  48. Replies
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    2,636

    Yes. Thank you.

    Yes. Thank you.
  49. Replies
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    2,636

    In Europe its forbidden use any refrigerant that...

    In Europe its forbidden use any refrigerant that cause Global warming as a tracer. If we canītt find the leak with Nitrogen and soap, we use a corant mixed in the oil.
  50. Thread: R-22 TO 407C

    by DANI25486
    Replies
    46
    Views
    41,414

    Are you sure what you saying.....because Iīve...

    Are you sure what you saying.....because Iīve done retrofits from R22 to R407C, most of the times when the compressor failed and then changed. Even the new compressor comes with POE oil, when we...
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