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  1. #1
    Join Date
    Jan 2003
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    Kansas City
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    RTUA 100 fan control bias

    I was checking the service settings on this R-22 machine and found a setting for fan control bias (-50 to +50) Default setting in the IOM is 0 and this machine is set to +2. The IOM doesn't explain what this setting represents, so is it a pressure offset, a response time adjustment or something else?

  2. #2
    Join Date
    Sep 2004
    Location
    Kansas City, Kansas, United States
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    13,817
    hi James!
    ya think brady quinn will save the Chefs???
    LMAO!!

    it most likely has to do with impedance.
    either 4-20 ma or 0-10 vdc from a remote thermistor if there is a potentiometer or a controller that operates the fans and the signal does not match or correspond to the setpoint.

    this could be achieved with a resistor or on the human interface panel?

    something like that?
    just a wild guess!!!!!!!!!!!!!!

    frank
    I WILL SELL WORK,GENERATE BUSINESS, GO GET NEW CUSTOMERS!
    YOU SHUT THE HELL UP AND QUIT RUNNING YOUR MOUTH!

  3. #3
    Join Date
    Jan 2003
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    Kansas City
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    The only thing that will save the Chiefs is a boycott. Stop paying for the tickets and the owner may be motivated to put together a functional coaching staff and team.

  4. #4
    Join Date
    Sep 2004
    Location
    Kansas City, Kansas, United States
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    13,817
    well atleast sunday should be good!

    #31 vs #32!!!!!!!!!

    should be pretty even!!!!!!! LOL!!!!!!!
    I WILL SELL WORK,GENERATE BUSINESS, GO GET NEW CUSTOMERS!
    YOU SHUT THE HELL UP AND QUIT RUNNING YOUR MOUTH!

  5. #5
    Join Date
    Nov 2004
    Location
    up in the hizzy
    Posts
    1,288
    Quote Originally Posted by james mo View Post
    I was checking the service settings on this R-22 machine and found a setting for fan control bias (-50 to +50) Default setting in the IOM is 0 and this machine is set to +2. The IOM doesn't explain what this setting represents, so is it a pressure offset, a response time adjustment or something else?
    The bias pot is use to override the set point of the variable speed fan control, crank it up and fan will run faster, do the opposite to make go slow.

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