Ucjv300 changed from lus200 to lus 175. Help needed

[signguy85]

Hey everyone i own a ucjv300 that had lus 200 inks, ccmm ykwhitewhite. I switched to a dual cmyk setup because white ink is difficult to maintain.

I've gone and changed to the lus175 ink set in the menu. I've installed new hoses and disconnected the old recirculating pump for the whites and made channel 7,8 have the same hose routes the cmyk does. Brand new lines, new valves by the bottles, flushed the bottle holder best I could.

Now I had white clogs in the clip fittings, hoses that I've cleaned. My idea is running some flushing solution through an old subtank into the white head to see if itll help. Also thought about doing a reverse draw, submerging the head increasing solution and drawing up with a syringe.

It was down over a month so may e ill be lucky but would appreciate any tips. I've been letting the printhead sit in a filled cap tops of thr cleaning solution 07 to help start the progress. Doing 24hr or longer

 

[Smoke_Jaguar]

Manual flushing of lines can cause some issues with subtanks, best to disconnect those lines and put the fittings in a place where they can safely drain into a container. I tend to tape open the ink valves and pour in rubbing alcohol to drain until it runs clear(-ish). Good to rinse out the bottle tanks. If there is a ton of white in them, you can replace those as well, but they run over $120 each.

Flushing solvent 7 tends to do a good job, but if lines are clogged, might be best off replacing the tubing. I just use a barbed union fitting and use the old line to pull in a new one, super easy.

 

[signguy85]

Oh yes I disconnected the lines from the subtank before flushing lines. Would i be ok to now run flushing fluid pretending to be ink in the former white channels to help the print head bounce back if it's clogged?

 

[Smoke_Jaguar]

If the head is clogged, flushing fluid might work, but it is far from a guarantee. One quick way to run a lot of ink through the head is to use the air purge mode and press FUNC2 when prompted. This will fire the head and you should see nice big drops of ink dripping out of the head. It uses a good amount of ink, but if using flush, that can be ideal.

How bad is the nozzle check on the head?

 

[signguy85]

Manual flushing of lines can cause some issues with subtanks, best to disconnect those lines and put the fittings in a place where they can safely drain into a container. I tend to tape open the ink valves and pour in rubbing alcohol to drain until it runs clear(-ish). Good to rinse out the bottle tanks. If there is a ton of white in them, you can replace those as well, but they run over $120 each.

Flushing solvent 7 tends to do a good job, but if lines are clogged, might be best off replacing the tubing. I just use a barbed union fitting and use the old line to pull in a new one, super easy.

Also rubbing alcohol or isopropyl? Might be cheaper than flushing with 1L solution 7 for that? I just replaced the subtank do you think I csn salvage it even if it barely any white. Were talking a month

 

[signguy85]

If the head is clogged, flushing fluid might work, but it is far from a guarantee. One quick way to run a lot of ink through the head is to use the air purge mode and press FUNC2 when prompted. This will fire the head and you should see nice big drops of ink dripping out of the head. It uses a good amount of ink, but if using flush, that can be ideal.

How bad is the nozzle check on the head?

Last time I tried to do a test with the spot test it didn't do any white

 

[Smoke_Jaguar]

IPA/Isopropyl/rubbing alcohol, all same. 70-91% works great for a cheap rinse. Can still use flush if you want or chase the alcohol with it.

 

[signguy85]

IPA/Isopropyl/rubbing alcohol, all same. 70-91% works great for a cheap rinse. Can still use flush if you want or chase the alcohol with it.

Thank you. I wish for luck this weekend.

Also is there any way to run the air purge without installing the chips or at least run it in the hidden menu without it deducting ink % from chip counter? Want to run some flush to see if it helps but dont want to waste 1000$ of new ink lol

 

[Smoke_Jaguar]

Not that I know of. I tend to just order new chips if they run out. Since I only swap chips when forced to, I tend to get a decent sized pile of new ones. That said, never ran LUS-175, just LUS-170.

 

[signguy85]

Oops me too. Not 175