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Clogged head Mutoh valuejet 1204 (I think)

Discussion in 'Mutoh' started by rlandor, Jul 20, 2011.

  1. rlandor

    rlandor New Member

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    Jul 20, 2011
    Hi,

    I am having some questions for the pro's here ;)

    I have a Mutoh Valuejet 1204 and we do not use the machine very often here. The first months I let the printer always on standby, but I calculated that if I do not print anything it will take about a half year to run out of ink by cleaning cycles only (1/24h / eco mode).
    So I decided to turn the printer off when not using it. :doh: Now that was a bad idea, because now when I want to print something I get banding in the black and the cyan colors. I already did a lot of cleaning cycles, but that does not help. I think the head is clogged.
    Do you have any suggestion to remediate this?

    I also would like to have a service manual of the Mutoh if anyone has it.

    Thanks a lot!

    Richard.
     
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  2. randya

    randya Very Active Member

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    Apr 6, 2007
    Arizona
    What does your nozzle check look like?

    If you are missing nozzles you probably want to try "head soak".
     
  3. rlandor

    rlandor New Member

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    Jul 20, 2011
    Hi Randya,

    Thanks for the quick answer! Yesterday I tried the head soak by putting lint free cloth with cleaning solution on it under the head, and there is some slight improvement, but there still remains a line in cyan parts printed and A nozzle check reveals some missing parts in black.

    I ordered a syringe and a bottle of cleaning fluid and want to try to clean the head by putting the syringe on the damper inputs. Now I am looking for instructions to remove the tubing from the damper. Have you ever tried this method?

    I have searched everywhere for a service manual but cannot find it via google.

    Thanks a lot!

    Richard.
     
  4. randya

    randya Very Active Member

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    Apr 6, 2007
    Arizona
    The LAST thing I would recommend is trying to push solution through the head.
    You can easily damage the piezos and/or blow out the dampers.

    You want to pull.
    Head soak, and pull a vacuum on the bottom of the capping station.
     
    Last edited: Jul 21, 2011
  5. rlandor

    rlandor New Member

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    Jul 20, 2011
    Hi,

    The reason I came up with the solution is because of the instructions found on this page:
    http://www.digiprint-supplies.com/blog/227-printheads

    Especially this part:

    They also sell equipment to do this:
    http://www.digiprint-supplies.com/DX5-Head-Cleaning-Kit-p18140.html


    Do you think that's too risky?


    Thanks!

    Richard.
     
  6. randya

    randya Very Active Member

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    Apr 6, 2007
    Arizona
    Very LAST thing I would do.

    I mean if you are going to buy a new head, there is nothing to lose.

    Otherwise, pull through the cap. IMHO.
     
  7. ABHDesigns

    ABHDesigns New Member

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    Jul 8, 2011
    I would suggest that you do another head soak. I just completed my first the other day with amazing results. Crack open a cleaning cartridge and let it sit over night. Good Luck!
     
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