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  1. #1
    Join Date
    Jun 2012
    Location
    Puerto Rico
    Posts
    10

    Carrier 30RAN022 Problem

    I am servicing a 30RAN AcquaSnap Chiller in Puerto Rico and is giving T116 alarm. I checked the suction pressure transducer and it was over the 2PSIG that manual says it should read(operating pressures 300psiHi 60psiLow). Can this be the problem or should i look for another solution. Right now the condenser coil is corroded and the owner PR Air National Guard wants the equipment to at least work until september when they get the funds to replace it.

  2. #2
    Join Date
    Oct 2011
    Location
    South Georgia
    Posts
    73
    The T116 alarm for a 30RAN indicates your saturated suction pressure/temperature is running below the brine freeze point. This means the freeze point of say 32 degrres is being exceeded in the cooler refrigerant circuit. Verify the actual refrigerant pressure in cooler A ckt with an accurate gauge, and compare with the pressure transducer reading. If they pretty well agree then you have several areas to look at.
    1) low refrigerant charge, use the manual to determine correct charge or remove and weigh it.
    2) Restricted flow of refrigerant into and thru the metering device.
    3) The brazed plate heat exchanger has peviously frozen and passageways are collapsed within circuit a cooler section.
    4) If circuit b is running okay then water flow MAY be okay, however you should measure water flow rate and compare to the design sheet. If the size is actually a 022 you probably do not have a ckt b so check your water flow rate.
    5)Verify that your water sensors inlet and outlet are accurate.

    Start with these and see where it goes.

  3. #3
    Join Date
    Jun 2012
    Location
    Puerto Rico
    Posts
    10
    I checked the pressure and the transducer read +5psig where it should be +- 2psig than transducer reading. The operating pressures where 60psig low 300psig hi.

  4. #4
    Join Date
    Jan 2008
    Location
    Dallas ,Texas
    Posts
    3,725
    Quote Originally Posted by Jborges5012 View Post
    I checked the pressure and the transducer read +5psig where it should be +- 2psig than transducer reading. The operating pressures where 60psig low 300psig hi.
    We know what your pressures are but what are your temperatures?
    UA 100

    It takes three people to do anything around here. Two do the work, one explains to the crowd of people who showed up when they seen smoke and flames.

  5. #5
    Join Date
    Jun 2012
    Location
    Puerto Rico
    Posts
    10
    The actual temperatures when the chiller shut downs I do not have them because when I am at the site it works and it does not shut down in like 2 hours. From what I have been reding maybe the piping system is too short for the chiller but it has been running for at least 8 years.

  6. #6
    Join Date
    Jan 2008
    Location
    Dallas ,Texas
    Posts
    3,725
    Quote Originally Posted by Jborges5012 View Post
    The actual temperatures when the chiller shut downs I do not have them because when I am at the site it works and it does not shut down in like 2 hours. From what I have been reding maybe the piping system is too short for the chiller but it has been running for at least 8 years.
    How about the temps while the chiller is running?
    UA 100

    It takes three people to do anything around here. Two do the work, one explains to the crowd of people who showed up when they seen smoke and flames.

  7. #7
    Join Date
    Jan 2009
    Location
    Not in Iran
    Posts
    1,111
    i agree with cc.,
    low saturation , i would think charge, air or water flow, setpoint too low,.






    Quote Originally Posted by Jborges5012 View Post
    I am servicing a 30RAN AcquaSnap Chiller in Puerto Rico and is giving T116 alarm. I checked the suction pressure transducer and it was over the 2PSIG that manual says it should read(operating pressures 300psiHi 60psiLow). Can this be the problem or should i look for another solution. Right now the condenser coil is corroded and the owner PR Air National Guard wants the equipment to at least work until september when they get the funds to replace it.
    no signature blast'em man blast'em
    !!!KILL THE TERRORIST!!!

  8. #8
    Join Date
    Aug 2002
    Location
    Greenville SC
    Posts
    436
    Look and see if there is a strainer on the chill water lines inside the chiller. If so check to see if it is clean.

  9. #9
    Join Date
    Jan 2008
    Location
    Dallas ,Texas
    Posts
    3,725
    Quote Originally Posted by milkyway View Post
    i agree with cc.,
    low saturation , i would think charge, air or water flow, setpoint too low,.
    Airflow come on man!!!!!!!!
    UA 100

    It takes three people to do anything around here. Two do the work, one explains to the crowd of people who showed up when they seen smoke and flames.

  10. #10
    Join Date
    Aug 2009
    Location
    Prattville, Alabama
    Posts
    2,132
    Quote Originally Posted by Dallas Duster View Post
    Airflow come on man!!!!!!!!
    Easy there, Dallas, easy....

  11. #11
    Join Date
    May 2010
    Posts
    1,295
    Airflow... hehehehe

    We need a heck of a lot more info than what you are giving to help you properly diagnose the issue your are having.

  12. #12
    Join Date
    Jun 2012
    Location
    Puerto Rico
    Posts
    10
    What information do you need so i can supplied it for help.

  13. #13
    Join Date
    Jan 2008
    Location
    Dallas ,Texas
    Posts
    3,725
    Quote Originally Posted by Jborges5012 View Post
    What information do you need so i can supplied it for help.
    Let me see.
    LWT-
    EWT-
    DPA-
    SPA-
    SCTA-
    SSTA-
    LLP-
    LLT-
    CAP-
    RGT-
    DGT-
    EWP-
    LWP-
    UA 100

    It takes three people to do anything around here. Two do the work, one explains to the crowd of people who showed up when they seen smoke and flames.

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