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  1. #1
    Join Date
    Jul 2010
    Location
    Malaysia
    Posts
    1

    30RB080 air cooled chiller

    Hey Guys,

    i am using the 30RB080 air cooled chiller.....How do you guys run the fan motor in full speed? i have totally modified my chiller into DOL start and stop system and i am stuck in testing the fan motor....It seems it need a PCB board to give contact it to run at full speed? Anyone has overcome this issue....Please get back to me ASAP as i am urgently requiring some answers

    thanks

  2. #2
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    67,913
    made this its own thread, and moved it to the open chiller forum.
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    How-to-apply-for-Professional

    How many times must one fix something before it is fixed?

  3. #3
    Join Date
    May 2002
    Location
    evansville indiana
    Posts
    943
    Not sure what you mean by "DOL"...please spell it out

    The fan motor...is it connected to a motor master 5 or in other terms a small variable frequency drive?

    Does this have comfort link controls ?

    If the fan is connected to a vfd or MM5 the controls supply an output to ramp the fan(s) up or down ... In test mode these fans won't necessarily run at full speed.

    I wish I could help but need more info...
    mikeacman

  4. #4
    Join Date
    Aug 2002
    Location
    Greenville SC
    Posts
    431
    The fan motors are controlled by the Fan Board. You shouldn't need any extra boards to make them run. If you are trying to test the fans operation in the test mode, and you have a VFD, then there are two imputs in the test mode. Pick the fan you want to test then turn in on. Then scroll down to the first setting below the fans, and imput your fan speed for the VFD. I'm not sure what you mean by DOL either.

  5. #5
    Join Date
    Jul 2007
    Location
    The Hot South
    Posts
    1,314
    Please tell us what you mean by DOL.

  6. #6
    Join Date
    Sep 2008
    Location
    A land down under
    Posts
    308
    Quote Originally Posted by R123 View Post
    Please tell us what you mean by DOL.
    R123, DOL (Direct on Line) is another terminolgy for Across the Line starters
    Necessity is the mother of invention

  7. #7
    Join Date
    Jul 2007
    Location
    The Hot South
    Posts
    1,314

    Smile

    Quote Originally Posted by Screwit View Post
    R123, DOL (Direct on Line) is another terminolgy for Across the Line starters
    That must be a down under term.

  8. #8
    Join Date
    Sep 2008
    Location
    A land down under
    Posts
    308
    Quote Originally Posted by R123 View Post
    That must be a down under term.
    Yep, Down under, NZ, Asia and I think Europe, petty much everywhere except the Americas
    Necessity is the mother of invention

  9. #9
    Join Date
    Mar 2011
    Location
    North Carolina Piedmont Area
    Posts
    449
    Quote Originally Posted by R123 View Post
    That must be a down under term.
    DOL. I just learned something new.

    _______________________
    Understand the symptoms and you will find a solution.

  10. #10
    Join Date
    Jul 2012
    Location
    TX
    Posts
    58
    You should be able to go into test and use the VAR_A command to ramp the fan up.

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