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Thread: Durst CLS 1840 shutter diagram

  1. #1

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    Last edited by shadow images; 8-Apr-2023 at 16:20.

  2. #2

    Join Date
    Jun 2014
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    Re: Durst CLS 1840 shutter diagram

    Should be pretty easy to trace out. Just take it out and start drawing.

  3. #3
    ic-racer's Avatar
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    Feb 2007
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    Re: Durst CLS 1840 shutter diagram

    There is a simple 'logic' relay (black rectangle) and two micro-switches and a cam that control the opening and closing movement. I my case, the shutter jammed (enlarger was in a community darkroom) and probably someone shut it down when the resistor blew (fortunately like a fuse protecting the motor) and gave off a lot of smoke.

    Subsequently they sold it to me. The repair was easy: unjam the shutter and replace the burned resistor.

    In your case...could be any one of a hundred occult things based on the (normal looking) picture.


    Click image for larger version. 

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  4. #4

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    Re: Durst CLS 1840 shutter diagram

    Yeah. It seems like the 1000 watt head is quite different from the 2000 watt. Until I can find a diagram for my set up , I’m not sure even how it works 100%. The EST 1000N power unit has a plug on the back that I’m not even sure if it has to be used or not. Tempted to just sell it.

  5. #5

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    Sep 2007
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    Milan, Italy
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    Re: Durst CLS 1840 shutter diagram

    Is it normal for the shutter to remain open when the head is not powered?
    Attached Thumbnails Attached Thumbnails Screenshot_2021-10-26-07-47-53-75_965bbf4d18d205f782c6b8409c5773a4.jpg  

  6. #6
    ic-racer's Avatar
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    Re: Durst CLS 1840 shutter diagram

    Click image for larger version. 

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    My CLS2000 shutter is closed all the time and only opens during exposure.

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