just another white head problem, with a twist. please help
hi all, i am new to this. looking forward to supplying and receiving info about DTG, screen printing, and the graphic arts.
white head problem, with a twist. please help
i have been working with a used 932nds and a 931d for about a year now. have had a hole slue of problems from the first month we got them till now. all the problems we had right of the bat and extra money spent to fix led me to believe the used Kornits were resold to as failed machines. upon research on various other forums, i found that many kornit users expressed a number of similar problems. with several visits from both kornit techs and distributor techs. [not in that order] and countless tech calls to both. i think we are now printing 100 times better, do to the last tech visit. with that said, we still have some unresolved problems.
current and now only problem with our 932nds, please help if you can.
problem 932nds: white heads clog after automatic purge & wipe.
when i do a manual purge & wipe, they look and print fine.
only heads affected (clogging) during the auto purge/wipe are the 2 white heads.
when clogged by auto purge/wipe, it takes 1 to 2 manual purge/wipe to clear out the clogs.
im tempted to find a way to turn off the auto purge/wipe, and just run the manual purge/w., once every so many.
Re: just another white head problem, with a twist. please help
ErrorNoMore; please keep us posted, to let us know what the problem was, as well as how long it takes to get it resolved. I believe I've experienced what you are describing; our issue turned out to be an improperly set vacuum setting. Easy fix, but you have to find the right pressure / vacuum balance, and keep it there, for the machine to operate properly; only speaking for myself, but it seemed we had to re-adjust our settings every few weeks, at least.
Re: just another white head problem, with a twist. please help
To make these adjustments, these need to be made with our internet access to the machine. This enbles us to see all of the settings and work directly with the customer. All params can be viewed and adjusted instantly. Calling our serivce line is the best remedy and fastest way to correct a problem.
Re: just another white head problem, with a twist. please help
The issue with Kornits that I never got over, was the fact that each machine seems to need its own unique, individual set of parameters, which don't always stay the same over time. Therefore, it is sometimes impossible to offer a "solution" to something that really just requires some time, tweaking and tuning the machine back into "perfect" mode; depending on a multitude of variables, the amount of vacuum might suddenly be just slightly under the ideal amount, causing ink to weep from the heads, blocking any potential droplets from firing. Or, perhaps it is too high, causing the ink to be sucked back into the head... Most likely, I'd bank on the first one, as it usually shows itself after a P&W routine.
Besides.... If they identified the issues, here, then it's a lot harder for them to continue to tell current owners "By golly, we've never seen this problem, before! It must be just your machine, or maybe something you are doing wrong..."
Re: just another white head problem, with a twist. please help
Quote:
Originally Posted by Justin Walker
Besides.... If they identified the issues, here, then it's a lot harder for them to continue to tell current owners "By golly, we've never seen this problem, before! It must be just your machine, or maybe something you are doing wrong..."
Imagine if car companies were like this?
owner: "My car won't run."
kornit: "Did you hit the brakes hard?"
owner: "Ya"
kornit: "Oh goodness no, you can't do that"
owner: "But didn't you design the car to stop?"
kornit: "Yes, but not that way... Do you have a backup?"
owner: "Ya, luckily"
kornit: "Good, remove the brakes and install them in the car that is down, to test if that is the problem."
owner: "But then I won't have a working car?"
kornit: "Sorry, this is standard troubleshooting"
owner: "NO IT"S NOT, CARS NEED COMPRESSION, GAS, and SPARK, HOW DO THE BRAKES STOP IT FROM STARTING?!?!?!?!"
kornit: "Well this is a very advanced piece of machinery."
owner: "..."
Re: just another white head problem, with a twist. please help
Quote:
Originally Posted by kornitguy
Imagine if car companies were like this?
owner: "My car won't run."
kornit: "Did you hit the brakes hard?"
owner: "Ya"
kornit: "Oh goodness no, you can't do that"
owner: "But didn't you design the car to stop?"
kornit: "Yes, but not that way... Do you have a backup?"
owner: "Ya, luckily"
kornit: "Good, remove the brakes and install them in the car that is down, to test if that is the problem."
owner: "But then I won't have a working car?"
kornit: "Sorry, this is standard troubleshooting"
owner: "NO IT"S NOT, CARS NEED COMPRESSION, GAS, and SPARK, HOW DO THE BRAKES STOP IT FROM STARTING?!?!?!?!"
kornit: "Well this is a very advanced piece of machinery."
owner: "..."
Were you listening in to our tech support calls???
Although, when I had my machine, they certainly couldn't connect to it, remotely, and adjust the settings! We were doomed to hours of late night tech support calls to Israel, where they operate on a COMPLETELY different schedule. At least now, you don't have to be on the phone! And hopefully, if it works well, then you won't have to make many manual adjustments to your machine; perhaps it is a new day for Kornit owners?
Re: just another white head problem, with a twist. please help
I don't want to beat a dead horse; you can use the forum search feature to read about my experience, both good and bad. I documented as much of the process as possible, from initially using a crane lift to load it into my building, all the way to a year and a half later, when I got rid of it. You can also head over to the Screen Printing University forums, to read what I have written there.
You can read my thoughts and experiences, talk to Kornit reps, themselves, and make an informed decision that is right for your business. Good luck!
just another white head problem, with a twist. please help 
