Run w/o Chiller?

Discussion in 'Mitsubishi Printing Presses' started by hold_my_beer, Jul 20, 2020.

  1. hold_my_beer

    hold_my_beer New Member

    Joined:
    Feb 2019
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    Location:
    OKLAHOMA
    Hello from Oklahoma!
    I run a 2007 6 color 40 inch diamond series.
    Does anyone know if running without chiller will cause damage to the chiller or press?
     
    Last edited: Jul 21, 2020
  2. turbotom1052

    turbotom1052 Senior Member

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    Location:
    Vermont
    Chiller is an option on most presses so the short answer is no. However, there are chemicals in the chiller water, that in addition to aiding thermal transfer, also act to reduce corrosion, just like the antifreeze in a water cooled automotive engine. If your chiller is not working properly, and management just doesn't want to spend the money to fix it ,then they should be aware of the risks. If its just a mechanical issue with the compressor or the condenser coils and the circulator works fine then by all means keep the circulator pumping at the very least on occasion. It should be noted that on longer runs, when run at a presses top rated speeds, you will miss the chiller feature. Most chillers also have heating features. First thing in the morning startups on a cold press will not be as easy either. The technology was developed for numerous good reasons. Unless a company just couldn't afford the repair, then why would you consider doing without it? Perhaps the company owner could postpone that new new Benz he has been eyeing, and take care of his equipment!!! Might be able to save a bunch of cash by finding a good local HVAC person to look at it, instead of spending the big bucks to have Mitsubishi or the systems manufacturer flown in with all the travel expenses ect.
     
  3. hold_my_beer

    hold_my_beer New Member

    Joined:
    Feb 2019
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    Location:
    OKLAHOMA
    Thank you for your reply!
    We have had 2 company's come try to repair.
    Result being we need an upgrade to the software. Cannot get software for original company, so we are replacing the computer with another companys computer and software.
    As for running without it for a couple weeks, hasn't been as difficult as I thought it was going to be. I will be glad to have it fixed and back to normal.
     
  4. turbotom1052

    turbotom1052 Senior Member

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    Location:
    Vermont
    Its good that you're able to print without it. A few tips that will continue to make it doable until you get everything squared away with your software.
    1. Try to keep pressroom environment stable. This means doing what's needed to control pressroom temperature and humidity.
    2. Try storing a decent size batch of your most used inks in this stable pressroom environment. Not advisable to take a can of ink from 90F storage
    area and throw it into the ink fountain of a press thats been sitting in a 68F pressroom.
    3. The evaporitive and cooling properties of isopropyl alcohol will help. If your running alcohol free you may want to add a bit on troublesome jobs
    If your already running a small amount you might consider bumping it up until you get things sorted out. Particularly on long press runs at high
    press speeds.
    4. If your schedule allows for it consider running the press at lower speeds. The faster a press runs the more heat it builds up. Short runs no
    Problem. Longer runs equal hotter rollers at higher speeds.
    Hope this helps.
     

  5. alibryan

    alibryan Senior Member

    Joined:
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    Location:
    Pacific NW
    You should try to avoid running the press for too long (if at all) without liquid at least circulating through the chiller system. I’ve heard from more than one press installer/technician that you can damage certain parts of the system if you run it dry. Something about the unions up on the press, where they connect to the hoses. I even had one installer who wouldn’t allow the press to be fired up at all - even for a simple print test - without first making sure that the chiller system was completely installed, filled up, and operating correctly.

    I don’t know if that means that it can’t be done, but I would advise being careful if you’re doing it.