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  1. #1

    Mcquay micrtech II default settings

    I have a customer that has a AGZ065 air cooled chiller with the microtech II controller....... they are in an area that is prone to power losses. The machine enable command is defaulted to the off position. I have read the IOM but cannot find directions on changing the default from off to on.

    The machine is a stand alone......does not have any external input for enabling the machine.

    Thanks

  2. #2
    Join Date
    Dec 2011
    Posts
    107
    set mode to switches and remove jumper on terminals of start stop,and put switch in place of jumper

  3. #3
    Join Date
    Dec 2011
    Posts
    107
    mistake,set mode to cool and control mode to switches

  4. #4
    Join Date
    Apr 2012
    Location
    Paper Street Soap Company
    Posts
    2,304
    Quote Originally Posted by mid carolina View Post
    I have a customer that has a AGZ065 air cooled chiller with the microtech II controller....... they are in an area that is prone to power losses. The machine enable command is defaulted to the off position. I have read the IOM but cannot find directions on changing the default from off to on.

    The machine is a stand alone......does not have any external input for enabling the machine.

    Thanks
    Sould at least have inputs from the pump auxilliary.

  5. #5
    Join Date
    Dec 2011
    Posts
    107
    I hope there is a flow switch.And not useing a safty device as a operateing control.

  6. #6
    New query:

    1) I wanted to know why VFD chiller performance curves start sloping downwards below 50 percent load? It follow the power = speed ^ 3 law then why is it sloping downwards after 30 percent load?

  7. #7
    Join Date
    Feb 2003
    Location
    Wichita Ks
    Posts
    1,479
    Quote Originally Posted by margitbarot3689 View Post
    New query:

    1) I wanted to know why VFD chiller performance curves start sloping downwards below 50 percent load? It follow the power = speed ^ 3 law then why is it sloping downwards after 30 percent load?
    what does this have to do with a microtech II controller?

  8. #8
    Nothing. I am new and I did not know where to post my query. It would be great if someone could answer my question though.

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