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UJF-6042 Problem with Magenta draining

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krygods

New Member
I have a UJF-6042 that keeps draining all the magenta into the waste ink tank. Only after a few days the brand new bottle of magenta is empty and the waste ink tank is full. What would be the first things to check to find the problem? Thanks in advance.
 
Smoke_Jaguar

Smoke_Jaguar

Man who touches printers inappropriately.
Yup, under the ink bottles behind the back panel is a series of valves. Have the service manual handy?
 
K

krygods

New Member
I don't have a service manual for this printer, would you know where I could obtain it? I'm familiar with the printer I've worked on it plenty of times but I've never been able to find a service manual for this one
 
dudeinthemoon

dudeinthemoon

New Member
That’s not the ink valves caused this, the reasons could be: clogged air filter on magenta subtank, it’s inside the subtank and cannot be replaced separately, air solenoid assembly which controls pressure in the subtank or both.
I would start with subtank because it’s cheaper and consumable
 

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Smoke_Jaguar

Smoke_Jaguar

Man who touches printers inappropriately.
Clogged bleeder filter on the dampers for me results in issues with filling with me, yeah, tied into the same system. The air solenoids, when bad tend to be clogged with ink (check clear lines leading to them for signs of ink getting into those lines). Or, when the seals go wonky, the air pump will run near constantly. But, on those notes, good to do a pressure check.
 
K

krygods

New Member
Smoke_Jaguar said:
Clogged bleeder filter on the dampers for me results in issues with filling with me, yeah, tied into the same system. The air solenoids, when bad tend to be clogged with ink (check clear lines leading to them for signs of ink getting into those lines). Or, when the seals go wonky, the air pump will run near constantly. But, on those notes, good to do a pressure check.
Click to expand...
what is required to do a pressure check? the air pump does run a lot more than it should seems like
 
Dasdesignguy

Dasdesignguy

Production Manager/Field Service Tech
SubTank and/or +/- Pressure Air Valve. What are the readings on your positive and negative air pressures? What are the readings on the Mag SubTank?
 
Smoke_Jaguar

Smoke_Jaguar

Man who touches printers inappropriately.
If you have your install guide that came with the printer, that covers the routing. Should be under menu> #TEST > PRESSURE if I remember correctly.
 
Smoke_Jaguar

Smoke_Jaguar

Man who touches printers inappropriately.
If you have the installation/setup guide (Can download from Mimaki as well), it shows how to set the pressure on the printer. Usually done on installation, but those valves can creep out over time.
 
K

krygods

New Member
Smoke_Jaguar said:
If you have the installation/setup guide (Can download from Mimaki as well), it shows how to set the pressure on the printer. Usually done on installation, but those valves can creep out over time.
Click to expand...
I checked the Mimaki website but all I could find was the Operation Manual and I didn't see anything about setting up the machine in there.
 
K

krygods

New Member
Smoke_Jaguar said:
If you have the installation/setup guide (Can download from Mimaki as well), it shows how to set the pressure on the printer. Usually done on installation, but those valves can creep out over time.
Click to expand...
Where can I find the throttle valve that is mentioned in the installation guide?

I think I found it, the valve next to the coolant fill location
 
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