Reefer temperature not dropping to the set point of -10

Discussion in 'Refrigerated Trucking Forum' started by Arcenterprises, Sep 1, 2018.

  1. Western flyer

    Western flyer Road Train Member

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    Mar 13, 2014
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    If your stuff was loaded hot it's gonna take time.
    What ever the temperature says, set the reefer about
    5 degrees lower, and put it on cycle.

    That way the unit can actually cool it,shut off,
    Then start back up and cool it again.
    Whenever it's running,it's cooling.
    You want it to shut off so you know what it can
    Do at this stage.
    You might have to go up or down a few degrees
    To get the cycle to work.

    Every couple hours drop it down a few more degrees.
    On cycle the whole time.
    Remember you want it to shut off.
    It's only going to be off for a few minutes
    Anyway because the heat from the load will
    Make it start back up.

    Slowly you'll get it down to what your looking for,
    Then set it on continuous if you need to.
    It might take a couple days depending on how
    Hot the stuff was loaded.

    I you leave it on continuous from the beginning
    The reefer is going to spend half the time it's
    Running defrosting instead of cooling.
     
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  3. DTP

    DTP Road Train Member

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    Temperature outside makes a difference too. If it’s hotter than hell where you are, it’s gonna take a while to get the temp that low. A long while.

    If your unit was screwed up, you wouldn’t even be anywhere near as cold as 14. Probably combo of the product and outside temp..
     
  4. Western flyer

    Western flyer Road Train Member

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    It's amazing how long it takes to cool
    Some hot stuff down.
    I've loaded hot stuff in the summer and it took
    3/4 days just too get it down in the 50 zone.
    Takes awhile for that cold air to get to the center
    Of the load with it jam packed in there.
     
  5. ebill45

    ebill45 Light Load Member

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    Oct 11, 2011
    dalton ga
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    Sounds like you got loaded with hot product. Did you precool the trailer? If so did you shut off the unit before opening the doors? And then restart it when you bumped the dock? If you didn’t shut it off and opened the back doors. You just sucked in all the hot air into your unit and froze the coils up. I would try manually defrosting it and see if temp drops a little after defrost. You might have to repeat defrost mode a few times to drop it down. This also works trying to cool hot product.
     
  6. STexan

    STexan Road Train Member

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    Longview, TX
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    Really? Precooling assures the driver and the shipper that the unit is in good working order BEFORE the product is loaded. Without having a successful precool, all the rest is wild speculation about what happened.
     
  7. ebill45

    ebill45 Light Load Member

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    Oct 11, 2011
    dalton ga
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    You can’t do that on frozen stuff It will sweat and the boxe will get spongy and the receiver will know when he sees
    It.
     
  8. DTP

    DTP Road Train Member

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    Overnight, I’m betting it’ll cool down significantly as the sun disappears and the temp drops. Ran reefer for years and at times was amazed after waking up how much the temp dropped on a frozen load while I was sleeping
     
  9. Western flyer

    Western flyer Road Train Member

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    No, it assures the shipper what it can cool down too.
    The driver already knows.
    in fact, a lot of them don't even care if it's pre cooled.
    Either way it has nothing to do with why the product
    Is taking so long too cool down when everything was supposedly working fine when he got loaded.
     
  10. ebill45

    ebill45 Light Load Member

    167
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    Oct 11, 2011
    dalton ga
    0
    Depends how long it will be on the truck. In a day or 2 running continuos it will bring the temp down to the setting. As long as the temp not about freezing you should be ok
     
  11. mhyn

    mhyn Road Train Member

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    Northridge, CA
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    nope. nothing will happen within 1-2 hours. I have done it with seafood frozen load many times.
     
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