Is top left number negative, top right positive?
Number to right of pump on is what?
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Sub Tank Overfilling on UJF-6042 MKII
- Thread starter Smoke_Jaguar
- Start date
Number to right of pump on is what?
Smoke_Jaguar
Man who touches printers inappropriately.
The negative and positive pressure adjustments are in different sections. If you have the install guide/setup booklet that came with the printer, it goes through the process, with pictures. I think it is on Mimaki's site as well.
Update - I did stretch the spring a bit on #2 clear valve. After adjusting positive pressure down from 53 to 17 I was able to complete an overflow maintenance and it drained the sub-tank. Woohoo! Got a new Supply error on #2 clear. Took the small cover off over the valves and lightly tapped the stem coming out of the valve #2. It seated (didnt go all the way in) and it stopped trying to pull from clear bottle. Reboot fixed the error so I'm going to go ahead a change that valve. Thanks much for the helpful info and support!
Smoke_Jaguar
Man who touches printers inappropriately.
You can flush the valves with a clip fitting and a syringe. Remove the bottle, clip onto the valve bottom side, push the valve in to open it and push/pull the ink back and forth with the syringe to dislodge built up crap in the seal. Note that you will likely get an overflow, opening the system to air will let ink in the line drain into the subtank by gravity.
which one should i use for the positive pressure?
the second option -> positive pressure (check)
or the 4th option -> positive pressure?
in my case the (check) option is at 16.5 which is ok, but the bottom option usually goes to 22 ish.
I've been recently getting overflow issues on the white channels. the machine has been stuck powered on during regular maintenance, so i'll probably have to call the techs soon (again)
I've never had to swap any air filters (on the back under the valves) and the valves were only swapped by mimaki request, when the machine as a few months old.
the second option -> positive pressure (check)
or the 4th option -> positive pressure?
in my case the (check) option is at 16.5 which is ok, but the bottom option usually goes to 22 ish.
I've been recently getting overflow issues on the white channels. the machine has been stuck powered on during regular maintenance, so i'll probably have to call the techs soon (again)
I've never had to swap any air filters (on the back under the valves) and the valves were only swapped by mimaki request, when the machine as a few months old.
Smoke_Jaguar
Man who touches printers inappropriately.
Could be a leaking ink supply valve (M015864 / M026750) if I were to take a guess on it. If getting pressure errors, not a bad idea to check your throttle valve.
Martinnz.b
New Member
Pump on it could be time for how long it was enabled.
a follow-up on this...
tech told me that while there are two options for the positive pressure, the one one they use is the (check) 2nd option from the top.
If the pressure is calibrated on the last menu option, the machine will eventually throw an error of not enough pressure while printing.
Smoke_Jaguar
Man who touches printers inappropriately.
Might need to recalibrate the throttle valve, also a chance an air fitting got loosened up.
David Verburg
New Member
We had the same problems (overflow error). First one few months ago on 7 (white), cause: valve. Last week same error on 8 (white). Cause: both tubes that had to suck the ink out of the capping station were clogged. So after a maintenance/overflow setting executed, the capping station flow over with white ink. We had the valve replaced again, but that didn't seem to be the cause. So if you have the same problem: replace valve, check the tubes between the valve and subtank and check the small tubes from the capping station to the waste ink bottle. Costed us a lot of money to find out as our Mimaki dealer replaced several parts before they found out it was an easy fix. Hope this helps you before you spend thousands of usd/euro to fix this problem (we did).