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  1. #1
    Join Date
    Jul 2002
    Location
    SE Texas
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    492
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    Manitowoc RNS0308A Evaporator Assembly Rebuild

    Has anyone ever rebuilt the evaporator assembly on this ice machine. The service manual has nothing. Water is leaking through the auger water seal (#9), so while I'm in there I'm going to replace the water seal retainer (#11), the seal ring (#12) and the bearing (#13). I'm trying to do this without removing the evaporator, so I won't have to recover the refrigerant and all that entails. I'm having a difficult time figuring out how to remove the auger (#7). Any help would sure be appreciated! Thanks.Name:  Manitowoc.jpg
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    With your chrome heart shining in the sun, long may you run.

  2. #2
    Join Date
    Jun 2009
    Location
    DFW, TX
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    Evaporator can actually be removed pretty easily without recovering, as the lines are soft copper, just move it out of the way.

    I have not had great luck with these machines, we had one that we replaced water seal and lower bearing, then upper bearing locked up, then something in top end broke and scored up evaporator. The upper bearing has a strange setup and the illustration doesn't really show you how it goes together, so my advice is take pictures during disassembly

    Sent from my SAMSUNG-SM-G890A using Tapatalk

  3. #3
    Join Date
    Aug 2002
    Location
    Southold, NY
    Posts
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    While open replace all bearings and seals.

  4. #4
    Join Date
    Jul 2002
    Location
    SE Texas
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    Thread Starter
    Thanks for the replies.

    So, I tore into it and this is what I'm seeing. It doesn't look good.

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    With your chrome heart shining in the sun, long may you run.

  5. #5
    Join Date
    Aug 2002
    Location
    Southold, NY
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    Seals shot.
    Clean it up with Emory cloth, new bearings and seals upper and lower. Your good to go.

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  7. #6
    Join Date
    Jul 2002
    Location
    SE Texas
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    492
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    Thread Starter
    After sending the photos to Welbilt technical support, they're saying I need to replace the whole evaporator assembly. The machine is under warranty still, so that's the route I'm going to take rather than rebuilding it. FWIW, the machine is just two years old. We bought three other machines at the same time. I hope this isn't a sign of things to come. Again, thanks for the feedback.
    With your chrome heart shining in the sun, long may you run.

  8. #7
    Join Date
    Nov 2006
    Location
    Wisconsin
    Posts
    484
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    The outer bearing race on the bottom bearing always rusts in place. Since its inside the housing and recessed, I found that welding a washer on it and tapping or pressing it out works.
    Replace all seals and bearings. If the evap is badly scored, machine isnt worth fixing.

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