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  1. #1
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    ice machine wont harvest

    Hi , I am working on a scotsman mv1000, and the unit doesnt drop the ice on harvest cycle within the time limit of 210 seconds, I have cleaned unit, tilted unit slightly forward, made larger cubes of ice, it makes ice fine and the pressures are pretty good , R404a @50psi and 20psi on ice production and 90psi on harvest. Are there anything else I can check

  2. #2
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    That looks like a UK model which I’m not familiar with. We’ll need a little more info.

    Water cooled or air?
    Ambient temp?
    Water inlet temp?
    Pressures at the start and end of the freeze cycle and harvest cycle?
    Freeze cycle time?

  3. #3
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    Thread Starter
    water cooled
    25 c ambient
    I would say 16 degrees water inlet temp
    hp starts at 290 and gets to 250 , a bit high
    suction 20 psi at end
    harvest 90 and 170
    about 20 minutes
    From australia

  4. #4
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    How old is this machine ?
    Have you looked over the evaporator plate for loose segments ( i.e. horizontal bars ) ?

  5. #5
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    How does the evaporator plate look? Shiny and smooth?

    How old is the machine?


    Sent from my iPhone using Tapatalk

  6. #6
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    Thread Starter
    Quote Originally Posted by VanMan812 View Post
    How does the evaporator plate look? Shiny and smooth?

    How old is the machine?


    Sent from my iPhone using Tapatalk
    10 to 12 years, and yes some of the nickle plate has worn.

  7. #7
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    Quote Originally Posted by VTP99 View Post
    How old is this machine ?
    Have you looked over the evaporator plate for loose segments ( i.e. horizontal bars ) ?
    Lol your post didn’t show up for me until just now. Looks like great minds think alike! Hahaha


    Sent from my iPhone using Tapatalk

  8. #8
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    Quote Originally Posted by jebb1974 View Post
    10 to 12 years, and yes some of the nickle plate has worn.
    Sounds like your problem...

  9. #9
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    Quote Originally Posted by VanMan812 View Post
    Lol your post didn’t show up for me until just now. Looks like great minds think alike! Hahaha


    Sent from my iPhone using Tapatalk
    👍

  10. #10
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    If you didn't stop for that second cup of joe you would've got me.

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  12. #11
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    Dec 2018
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    Assuming the ice grid is producing uniform ice and the plates aren't loose it is likely that the nickle has worn to the point of being "sticky". One trick you can do is get a small brush and scrub down each plate with ice machine cleaner. If you have proper water pressure and gas pressure then that could be the issue. Older machines like old people need more extensive service.

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