Results 1 to 7 of 7

Thread: Water problems

  1. #1
    Join Date
    Jan 2013
    Location
    Dyersburg, TN
    Posts
    156

    Confused Water problems

    I am having trouble with two 30ra30 chillers that are twinned together. I am getting mode 9 Slow Change Override and mode 26 Short Loop Override.
    I believe i have a water issue. The machine has a design of 65.3 gpm and 12.6 feet head. I am get a PSI difference at chiller of 10 psi with is 23.06 ft of feed. Would that mean i am moving too much water because the heat exchanger is redistricted the large amounts of water coming in. This is a Bronze plate heat exchanger. I have been battling this problem for a while now. All help is greatly appreciated.

  2. #2
    Join Date
    Jan 2008
    Location
    Dallas ,Texas
    Posts
    3,702
    Did you happen to check the chilled water strainers?

    Do you have an operational log of the machine?

  3. #3
    Join Date
    Jan 2013
    Location
    Dyersburg, TN
    Posts
    156
    Yes i have i check the strainers, i have a little bit of a water problem since start up date. No i dont have a log.

  4. #4
    Join Date
    Jan 2008
    Location
    Dallas ,Texas
    Posts
    3,702
    Does it make set point it must since you have mode 26 . How about the water volume ?

    What is the water delta T when the units are 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.

  5. #5
    Join Date
    Jan 2013
    Location
    Dyersburg, TN
    Posts
    156
    I have a Delta T any where from 7-11. Not for sure about the water volume? How should i check to get that

  6. #6
    Join Date
    Jan 2008
    Location
    Dallas ,Texas
    Posts
    3,702
    You might want to try to valve off the lag chiller and see if that helps your flow to your AHU's.
    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 2013
    Location
    Dyersburg, TN
    Posts
    156
    What is the average pressure drop of a cooling coil?

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Comfortech Show Promo Image

Related Forums

Plumbing Talks | Contractor Magazine
Forums | Electrical Construction & Maintenance (EC&M) Magazine
Comfortech365 Virtual Event