Reefer temperature not dropping to the set point of -10

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

  1. STexan

    STexan Road Train Member

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    I agree precooling does not help with the ability to quickly reach set point. But crap happens at any time. Going into a temp controlled shipper without being precooled is just dumb if for no other reason than knowing your system has not taken a dump, and can achieve set point when empty. If it can do this empty, you can load with at least a few more degrees of confidence

    And I admit I don’t run pretrips as often as I probably should but we run new[er] equipment and don’t change trailers very often.
     
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  3. reeferwrencher

    reeferwrencher Medium Load Member

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    At 14 F the ball in the sightglass of the reciever tank located above the battery should be floating in liquid freon if it isn't then it's low on freon.If it 's floating then it might have a bad TX valve which cannot be changed while the trailer is loaded.Agree with others on here that you should also try a manual defrost although that is unlikely to solve the problem on a freezer load.
     
  4. pmdriver

    pmdriver Road Train Member

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    With a reefer load of produce you must take a temperature reading from the middle of some of them pallets, if you have a company in a hurry they only cool it so the outsides are the right temp. IT will take a long time to get the rest to required temps. If you get the core temps and notify and have that listed on the BOL you might have covered your rear.
     
  5. x1Heavy

    x1Heavy Road Train Member

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    The reefer will tell you what the temperature situation around it that is has to deal with.

    I remember pulling over in Alabama one summer night when that reefer was really working hard, roaring actually for a really hard long time that evening.

    I checked it's information and come to find out that she was dealing what it thought was around 170 degrees around it.

    I actually dropped the trailer facing the wind at a truckstop and waited a hour over dinner. I came back to it and she had settled down into what it thought was only 135 or so. I ended up staying there backed up to it until morning light. It really calmed down in the night. (That might have had something to do with less heat etc also)

    I normally run the hell out of my reefers, but when they get to demonstrating a behavior of someone hurting (It's weird to some people but it's easier to explain in English) I tend to nurse over it more.
     
  6. H.E.SantosTransport

    H.E.SantosTransport Bobtail Member

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  7. Another Canadian driver

    Another Canadian driver Road Train Member

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    I just finished reading all the post.
    These posters really did their homework and
    know more than a thing or two about running reefers.
    Very helpful replies.
    I hope the OP got some good insight into what's going on.
    He should post an update with the outcome afterwards.
    Good luck OP.
     
  8. Capacity

    Capacity Road Train Member

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    Did you pulp the load as shipper loaded it ? , used to be part of the drivers job to pulp and write temps on the bills.
    If the load was loaded warm it would never cool down , maybe the top tie if your lucky.
    Is the load SLC.
     
  9. H.E.SantosTransport

    H.E.SantosTransport Bobtail Member

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  10. abyliks

    abyliks Road Train Member

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    Combination of hot product, warm ambient temp, and a smaller unit, they really recommend the 310/330
    For frozen, although I do quite a bit with my 200, I can only get to about 0 on ~85+ degree days.

    i would manually defrost it a few times as well

    edit: just noticed old post
     
  11. aussiejosh

    aussiejosh Road Train Member

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    Well yes I do agree on the first point you mention, however on the other points I disagree with, Fridge vans ( reefers) are only designed to maintain a set temperature and what ever temp the product is loaded at this is what it generally will remain at provided your reefer can maintain the same temperature. Which more to the reason why some warehouses want to see the van pre-chilled as it proves you can maintain a certain temperature. If the product was loaded at say minus 10 F and your fridge fan can maintain that minus 10 degrees the product loaded should remain at minus 10 degrees the problem always is if the reefer can't stay at that set temperature then the product is possibly going to melt which can be a problem when you arrive at the receiving warehouse and they do a temperature check. What a reefer can not do is bring the actual product temperature down it may slightly drop the temps on the packaging buts that's about it. The actual product will remain at the temp it was loaded at from the warehouse if the reefer can maintain that same temp, so its the total opposite the temps of the product can go higher but never lower and at best just be maintained at the current temp they were loaded at.
     
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