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Nozzle wash

Discussion in 'Mimaki' started by Awards+, Jul 12, 2012.

  1. Awards+

    Awards+ Member

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    Oct 7, 2011
    So I do a nozzle wash everything other day and this morning I noticed a problem. When I apply the liquid it usually puddles in that color but the black is just running through. What could be the problem?

    Thanks,
     
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  2. genericname

    genericname Active Member

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    Feb 27, 2009
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    Either a leaky line, or a busted pump.

    If you're in a bind, and just need to do a nozzle wash before you can diagnose, clamp off the lines after turning off the printer, drop in some cleaning solution, and park the heads. Unclamp when you're done, and power up.
     
  3. Awards+

    Awards+ Member

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    Oct 7, 2011
    The cleaner runs through pretty fast so I would guess the pump. This is on the black head and it's printing fine so I hate to mess anything up but I don't' want to dry out a head. What would you recommend doing and were is the location of the pumps?
     
  4. SightLine

    SightLine Very Active Member

    On a JV3, behind the back panel behind the left roll support. It's a smaller panel. On a JV33 behind the front panel under the capping station.
     
  5. genericname

    genericname Active Member

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    If you're uncomfortable with getting your hands dirty, or making regular adjustments, just straight up replace the pump. Otherwise, I'd open up the black side of the pump, replace the busted rubber gates, and slap it back in.

    As Sightline said, it should be on the back, though I do have a JV3 here that has the pumps in the JV33's position. Move your left-most roll holder to the right, past the panel split, loosen the screws on the front of the panel near the top, and those that hold it on the bottom, and just pull the panel off. The pumps will be on the left.
     
  6. MikePro

    MikePro Major Contributor

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    Racine, WI
    couple of disway washes usually clears this up for me
     
  7. SightLine

    SightLine Very Active Member

    On the pumps, I was meaning on a JV3 they are accessed from a panel on the rear of the machine. On the JV33 they are behind a panel on the front of the machine. On both, they are essentially under the capping station area. The JV3 has two pumps, the JV33 has one. In my experience with at least a half dozen aftermarket pumps, none will last as long as an oem pump. Worth the extra money for a genuine Mimaki one in my opinion.
     
  8. MikeD

    MikeD Active Member

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    Oct 25, 2011
    does anyone have instructions for replacing the pump for a JV33?
     
  9. K3TZ

    K3TZ Member

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    Jun 9, 2011
    @ Sight Line, would you be able to know where the pumps are located in a JV34-260?
     
  10. gabagoo

    gabagoo Major Contributor

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    Vaughan, Ontario
    I had that on my yellow cap about 4 months ago...sometimes the liquid would stay and other times it would suck down...I eventually changed the pump and working fine now
     
  11. Tekkie1

    Tekkie1 Tekkie of Many Things

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    Apr 27, 2012
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    The older JV3S(3 heads) has the pump on top at the front, the others are where what has been said.
    Definetly a pump or pump line problem if it runs away when you are in nozzlewash mode, as the pumps reverse and block off so it can hold the liquid in the cap
    Tekkie1:wink:
     
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