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Type: Posts; User: jlunaCR

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  1. Replies
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    Centrifugal chiller question.

    Hello guys,

    I have a positive pressure Daikin/McQuay centrifugal chiller, water cooled single compressor.

    Our customer is requesting to do oil change on entire machine. As far as I understand...
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    717

    No not at all.

    No not at all.
  3. Replies
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    717

    That should have been a different post.

    That should have been a different post.
  4. Replies
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    844

    LP control -

    LP control -
  5. Replies
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    717

    Me too!!! - Lmao

    Me too!!! - Lmao
  6. Replies
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    Lol - I meant capacity control coil. Hey, I...

    Lol - I meant capacity control coil.

    Hey, I did some research on that and you’re totally right, it makes total sense!

    I really appreciate your input on this, you’ve definitely saved me some...
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    To be honest I didn’t check amp draw at this time...

    To be honest I didn’t check amp draw at this time while onsite. At first I was I was thinking a weak magnet. Any other ideas perhaps?

    Thanks again -
  8. Replies
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    717

    Noisy Bitzer compressor

    Hi guys, have a Bitzer screw compressor on a rack. When compressor starts everything is normal. When capacity control valve engages you can hear a sort of a dragging type of noise. Does anybody have...
  9. Replies
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    1,262

    Hey guys thanks to all. I ended up replacing...

    Hey guys thanks to all. I ended up replacing the oil transducer and that solved the problem.
  10. Replies
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    1,262

    So the alarm shows as very low oil level....

    So the alarm shows as very low oil level. Compressor starts for around 30 seconds, sigh glass fills up with oil... runs another 20 seconds, you can hear the capacity control relay clicking, then a...
  11. Replies
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    1,262

    Hi Heatingman, They’re truly independent...

    Hi Heatingman,

    They’re truly independent circuits not piped in Tandem.

    Thanks
  12. Replies
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    1,262

    There’s two circuits, no secondary oil separator.

    There’s two circuits, no secondary oil separator.
  13. Replies
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    1,262

    Model number is CSH9573-180Y Step load. *...

    Model number is CSH9573-180Y

    Step load.

    * I mixed the other post with this one. Different compressor same type of issue.
  14. Replies
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    Hi guys, Yes its in a pump down... BSE170 ...

    Hi guys,

    Yes its in a pump down... BSE170

    Alarm says very low oil pressure. It has a noisy start (as if it was liquid flooded ) and goes away after 30 seconds. Then I can hear the 75% unloaded...
  15. Replies
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    Bitzer Compressor - Low oil pressure alarm.

    Hello Guys...


    Need some help here please:


    I have a 30 HP Bitzer screw compressor on a refrigeration rack system with an Emerson CPC 835-0400 controller.

    The problem is that the...
  16. Replies
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    922

    Chiller Re-tubing advise

    Hello guys,


    Have a client with a 40 year old air cooled chiller. Yes, he does not want to replace this dinosaur !. He rather spend some big bucks rebuilding this equipment.

    Well we're having...
  17. Replies
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    Hey guys... Yeah, not the solenoid...

    Hey guys...

    Yeah, not the solenoid certainly... Tested that before getting this far for sure. We'll sometimes customers put us against the wall being freaking cheap! Any ways, ended up installing...
  18. Replies
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    1,062

    Advice on compressor short-cycling

    Hello everyone :


    I have a customer with a McQuay air cooled chiller and one of 35 HP semi-hermetic compressors is short-cycling on off cycle, sure is a leaky discharge valve, but rather then...
  19. Replies
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    1,476

    Cost of a 100 Ton Chiller Yearly Maintenance

    Hey guys,


    Just curious what's the cost in other towns across os the USA on a 100 ton water cooled scroll vs screw chiller. Compared with Phx, AZ.

    Just regular stuff, punching tubes once a...
  20. Replies
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    Energy management solution

    Hey guys,

    A customer of us with around 60 fast food restaurant locations across the valley, currently using e-stat as their energy management for all of the HVAC/R equipment, would like to get rid...
  21. Thread: Help! - LRA

    by jlunaCR
    Replies
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    738

    I hear you guys, feel bad for this customer...

    I hear you guys, feel bad for this customer though... Guess is the price to pay for being cheap.
  22. Thread: Help! - LRA

    by jlunaCR
    Replies
    5
    Views
    738

    Help! - LRA

    Hello guys,

    I have a 40 ton Trane liquid cooled scroll chiller with 4 compressors all of them locked up. Some Co. was on site before and the did a "start up" with the system with no water...
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    Thanks guys, I agree too. Will do next time.

    Thanks guys, I agree too. Will do next time.
  24. Replies
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    Thanks to everyone guys.

    Thanks to everyone guys.
  25. Replies
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    So finally decided to recover the refrigerant,,...

    So finally decided to recover the refrigerant,, flushed with nitro, changed oil, dehydrated the system and recharged. BOOMMMM! Non-condensables. System is running like a champ now !

    Is there any...
  26. Replies
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    Don't have a log, just took over the building and...

    Don't have a log, just took over the building and it wasn't running properly how would i have a log?

    Thx though.
  27. Replies
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    It is fix flow, tower was cleaned recently and...

    It is fix flow, tower was cleaned recently and tubes punched. Water flow would affect both circuits I think?

    Going crazy !

    Thx guys
  28. Replies
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    Hey no problem ! I appreciate the help. Yeah,...

    Hey no problem ! I appreciate the help. Yeah, talking about high pressure cut out. Water temperatures stay normal but the high side starts to rise till it cuts out (only with comp # 2 on circuit #1)...
  29. Replies
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    BennyD, This happens only when compressor #2...

    BennyD,

    This happens only when compressor #2 on circuit #1 starts, the pressure starts to rise very very slowly till like 2 hrs later trips on overload.

    Circuit # 2 runs just fine. I Have...
  30. Replies
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    Water has been treated properly plus the cooling...

    Water has been treated properly plus the cooling tower was recently cleaned and tubes at condenser punched.

    I think that could be one reason but wouldn't that affect the whole circuit and not just...
  31. Replies
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    Trane CGWF 40 Ton

    Guys,

    I have a 40 Ton CGWF R22 water cooled Trane chiller, 2 circuits with 2 - 10 ton compressors each circuit. When circuit #1 starts with compressor #1 system works fine and discharge saturation...
  32. Replies
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    [QUOTE=Dilp172;24827881] So metering device...

    [QUOTE=Dilp172;24827881]

    So metering device must be replaced as well to be bullet proof.

    Thanks
  33. Replies
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    1,167

    JEF1980, water cooled scroll, not sure why I...

    JEF1980, water cooled scroll, not sure why I typed centrifugal. Sry.
  34. Replies
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    Trane water flood evarator chiller

    Hi guys,

    Im new to this great forum sorry if i made a mistake in posting here...

    I'm a mechanical service tech in the Phoenix, AZ area. I have a question hoping to get some input from...
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