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  1. #1
    Join Date
    Feb 2005
    Location
    Tampa Florida
    Posts
    765

    And Your Answer Is?

    Which of the following could lead to low refrigerant head pressures on a wet bath chiller?


    a. A dirty condenser, faulty fan controller/ VFD, or high ambient air temperature.


    b. Low ambient air temperature, low fluid flow, or low refrigerant.


    c. Faulty crankcase heater, bad pump seal, or peeling paint.


    d. Condenser fans running too fast, a low reservoir, or low refrigerant.

  2. #2
    Join Date
    May 2001
    Location
    Western Wa
    Posts
    1,834
    b and c
    God Bless our Veterans

    God Bless the USA

  3. #3
    Join Date
    Feb 2010
    Location
    MEXICO
    Posts
    472
    B AND C

  4. #4
    Join Date
    Feb 2005
    Location
    Tampa Florida
    Posts
    765
    They only ask for One answer on the test.

  5. #5
    Join Date
    Dec 2003
    Posts
    2,395
    d

  6. #6
    Join Date
    Jun 2010
    Location
    U.A. (upper Alabama)
    Posts
    856
    B and D

  7. #7
    Join Date
    Nov 2010
    Posts
    16
    b

  8. #8
    Join Date
    Dec 2008
    Location
    Dixiana, AL
    Posts
    2,609
    I don't care what they want, B & D are both valid answers.

  9. #9
    Join Date
    Mar 2003
    Posts
    7,321
    my guess is they want d, due to the condenser fan running too fast logic. In b, low ambient air wont necessarily cause this unless head pressure control is wrong or faulty.

  10. #10
    Join Date
    Jan 2006
    Location
    n.e.illinois
    Posts
    81
    what the heck is a" wet bath" chiller?

  11. #11
    Join Date
    Mar 2003
    Posts
    7,321
    flooded evap fluid flow through the tubes.

  12. #12
    Join Date
    Dec 2009
    Location
    New Hampshire
    Posts
    26
    how would low fluid flow decrease head pressure?

  13. #13
    Join Date
    May 2001
    Location
    Western Wa
    Posts
    1,834
    My head must be up my ***.

    It isn't c, and really b and d are the both good answers.

    But I know how these textbook tests can be, so, if I had to pick one, it would be d.

    I was taking a test one time for a job, and the question was what would happen to the discharge pressure on a heat pump when the outdoor fan quit. I told the proctor that I needed to know whether the unit was heating or cooling, and he was adamant that it didn't make any difference. I didn't get that job, because I told him that it sure as h*** did.
    God Bless our Veterans

    God Bless the USA

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