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  1. #14
    Join Date
    Jan 2010
    Posts
    6,263
    Do you know the model # so I can look up the correct installation method ?

  2. #15
    Join Date
    Jan 2010
    Posts
    6,263
    If the solenoid does not close during defrost, refrigerant might bleed through the TXV.

  3. #16
    Join Date
    Jul 2012
    Posts
    20
    model # for the solenoid?

  4. #17
    Join Date
    Jan 2010
    Posts
    6,263
    No for the Kysor case. Does the solenoid valve not close during defrost ?

  5. #18
    Join Date
    Sep 2007
    Location
    NH
    Posts
    1,148
    Should have 3 defrosts for for 45 minutes if they have reversing fans in them....
    Are the fans reversing in defrost?

    If electric defrost 3 for 30 min.

    That case that has 20 degree temp needs to be adjusted by your tech... Or the other 3 need to be.. Superheat should be all the same on them.. Or discharge air should be close to the same.

  6. #19
    Join Date
    Jul 2012
    Posts
    20
    Ksyor case M1A12U is the case number. I don't think the solenoid closes during deforst because nothing else is connected to it. I would think it would stay open because the case temp is higher and the thermostat is calling for the solenoid to open.


    Dchappa21 - i called the company and they said the fans should reverse but my case do not have that relay that make them go in the other direction.

  7. #20
    Join Date
    Sep 2007
    Location
    NH
    Posts
    1,148
    Discharge air should be set for 22-26 degrees on those cases.. So if the t-stat is in the discharge air it is really close....

    Guess that is for the m1a3 it's the 3000 series... Not sure how much different it is.

  8. #21
    Join Date
    Jul 2012
    Posts
    20
    http://kysorwarren.com/docs/uploaded...71001_MEAT.pdf



    looks similar




    45 min defrost would kill the red meat that its displayed in it.

  9. #22
    Join Date
    Sep 2007
    Location
    NH
    Posts
    1,148
    It should terminate at 45 degrees... If wired correctly

  10. #23
    Join Date
    Apr 2007
    Location
    Loris SC
    Posts
    208
    What is the method of defrost? 6 times a day should be enough but 25 mins may not be long enough if its off cycle.

  11. #24
    Join Date
    Jul 2012
    Posts
    20
    Quote Originally Posted by refertecbd View Post
    What is the method of defrost? 6 times a day should be enough but 25 mins may not be long enough if its off cycle.
    air defrost with compressor turned off with a defrost timer

  12. #25
    Join Date
    Apr 2007
    Location
    Loris SC
    Posts
    208
    Off-time defrost is not recommended for M1A3 cases.
    From page 13 of the manual. I bet the reverse cycle fans have all be pulled out and replaced with standard 9 watt motors over the years and now the cases have defrost issues

  13. #26
    Join Date
    Jul 2012
    Posts
    20

    Angry

    Quote Originally Posted by refertecbd View Post
    Off-time defrost is not recommended for M1A3 cases.
    From page 13 of the manual. I bet the reverse cycle fans have all be pulled out and replaced with standard 9 watt motors over the years and now the cases have defrost issues

    it just started in the past couple of months.... was working fine with just regular fans defrosting but i have to say in the past 3 years the coils stayed clean as i can tell for all but the furthest unit from where the line comes in to the case. problems started when we called someone out to "fix" the last case that would ice up every 3 months and the messed them all up

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