Resun Cl650 chiller

Discussion in 'Test Kits, Controllers, Reactors and Dosers' started by KevinW, 26 May 2007.

  1. KevinW

    KevinW

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    Hi all,
    Is there anyone else using a Resun CL650 chiller? I have one and find that the temperature control only seems accurate to aboput 1C.
     
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  3. leslie hempel

    leslie hempel Moderator MASA Contributor

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    hey kev i have one but havent run it long enough to answer your question.... its been in storage for about the last year......

    hope you get some clarity.... les
     
  4. viper357

    viper357 Admin MASA Contributor

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    I am running a CL300 and it seems to be about 2 degrees out, as in if I set it to come on at 25 it will only come on at 27, but the temperature measurement itself is pretty on par with my tunze temp controller.
     
  5. KevinW

    KevinW Thread Starter

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    The issue that I need some advice on is that, with the lack of sensitivity of the chiller thermostat, I am getting a continuos cycle where the chiller (set to 26.5C) kicks in and drops my tanks temp to about 25.5, then my heaters kick in to take the tank temperature back up to 26, which then causes the chiller to kick in again. I have tried widening the gap by setting the chiller to 27 and my heaters to 25 but this does not seem to help much and the temperature still seems to fluctuate between about 25.5 and 26.5. At the moment I am just running fish and soft corals but do want to start SPS once I am happy that the tank has settled. My concern is that this variation may be problematic. Is this a real concern?
     
  6. Alan

    Alan Admin MASA Contributor

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    Hi Kevin, i think most chillers operate at the one deg difference, if you set them at 26 then they swith on at 27 and off at 26. I know my AM operates the same way.
     
  7. Kanga

    Kanga Retired Moderator MASA Contributor

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    Hi Kevin, I have the same chiller and I have about a degree swing as well, what I have tried is to set the Chiller at 26.5 and the Heater at 27, that way this seems to help although it uses more power.

    Great chiller though
     
  8. KevinW

    KevinW Thread Starter

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    Hi Kanga, does this not mean that the chiller runs constantly?
     
  9. Kanga

    Kanga Retired Moderator MASA Contributor

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    just about yes
     
  10. palmerc

    palmerc

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    I'd drop the temperature at which your heater need to come on at eg. maybe set it around 24°C and let the natural variation in the chiller settings determine yoru tank temperature.

    That way the heater would be more of a back-up in case chiller drops temperature too much, rather than constantly "fighting" against the chiller.

    Clinton
     
  11. Benanna

    Benanna

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    Chiller solution

    I have a solution for your chiller temp variations. hee hee

    See DIY chiller,
    http://i94.photobucket.com/albums/l100/Benanna-2006/DIYChiller1.jpg
    http://i94.photobucket.com/albums/l100/Benanna-2006/DIYChiller.jpg

    I found this on an American website where a guy living in the Texas desert is using this. He claims the temperature during the day reaches 55 deg. C and his chiller is working very well.

    Thought this was quite amusing, but quite a few people seem to be using it. If it is for cost saving, I don't see the point as you would still need to buy the fridge.
     
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