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can anyone help with air bubbles in ink lines please?
just been printing when the cyan just disapeared no warning. cartridge pretty low so changed it and started again same problem, had a look at the lines and can see air bubbles any ideas how i purge them out and why 😥 has it happened
derek -
27 Replies
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take off the cover, with the head parked & connect your syringe to the cyan tube and pull throught the ink until you have a good flow of cyan and clear the air bubbles.
mind an get your gloves on 😉
andy 😎
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cheers andy
just done the op looks ok mine is cadet plus dont know how it differs but there is only two tubes from the capping station.black cyan and mag yellow any ideas how much ink is in the tubes.would like to pull just enough to clear the whole tube have done a full syringe ,full
syringe is 30ml so thats 15 each tube including the bubbles it looks ok but will keep an eye on it any ideas how its happened
thanks againderek
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hmm not sure on the cadet plus, generally you need to either syringe or a few medium/ powerful cleans although i’de syringe.
Keep doing a test print till it gets clear.
Andy 😎
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On the cadet there are 2 output tubes you can syringe. 1 is for black and cyan, the other for yellow and magenta.
Bubbles in the line can be caused by a number of reasons including a damper problem or the damper O-ring.Peter
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🙁 thought this was sorted after pulling through ink with syringe
however started cadet up this morning and ran test print the cyan has almost gone againso ran some small solid colour bars and it seems to be getting better (?)
seems as if the ink is slowly been pulled back again will ring the supplier up at 9 and see what happens any ideas anyonederek
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Derek, had a similar problem a couple of months ago turned out to be a knackered pump ie there was a hole in one of the lines couldnt get an engineer for a week but was assured i could change pump myself got a delivery next day and sure enough changed pump piece of p!ss pump cost £50 just a thought
G
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Hi,
I think it will probably be the O ring in the damper.. This alows the ink to drain back. Quite easy to replace just make sure you lift it off in an upward direction and not at an angle as I did as this will snap off the small manifold which it seats on!!Cheers
Ian -
thanks george higgi any chance of a digi pic of the offending items
am i right in thinking the dampers are under the capping station ?
looks to be only one would the black not pull back as well
which end are the pumps
sorry for the dumb questions
confused
Derek -
pump more likely… dampers with the o-ring is possible.
do several head cleans and see if your still at this point. Also, I hope everything on the seals is clean and tidy, no build up of ink under head?
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hi again thanks for the pointers
machine is spotless heads are clean
located the dampers 😳 i was looking at the seals on the bottom of the capping station. still looking for the pumps just spoke to the supplier and its a warranty call 😀 engineer seems to think damper
awaiting the engineer to see when he will arrive i will take some pics of the problem to show and update on the repairthanks again everyone
Derek
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damper basically cleans/restricts the flow of ink, kinda controls it, these are located above the print head
the pumps are under the capping station, these suck the ink through the head to keep the nozzles from blocking.
Works like a drip fed hospital system, nothing special about it… any air like through the o-ring nut seal on the damper will cause ink to go back up the pipes. -
new damper fitted this morning 😀 😀
under warrantyderek
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still ongoing 👿
3 sets of dampers three engineers one pump same problem
waiting for new capping stations having to do med head clean every morning to get some ink to the heads once thats done it runs fine
just when its been stood overnight. 🙁Derek
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think somebodies watching me just after my last post in walks engineer
two new dampers and two new capping stations fingers crossed
i will be in at six to check
:pray:Derek
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😥 (:)
yes you guessed it
in this morning run test print cyan and magenta only about 20% of the bars visible
after being fitted with new dampers, pump, capping stations, and all tubing (?) i suggested it might be the cartridges but these have been changed as well could it be the heads.
after a medium head clean it is fine as long as its running if left for any length of time even an hour it will start to drop out
i am now sitting waiting for the engineer to ring.
:banghead:
Derek -
quote :I am now sitting waiting for the engineer to ring.
If I’d have done this I’d be a corpse!!
Over the last couple of years and 2 Cadets, the vast majority of problems, and there have been a lot of them, were caused by the inks damaging components, blocking heads and tubes etc.
That is why I am in the process of changing over to EcoSol Max inks. You don’t hear of Versacamm owners with the same complaints.
Peter
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Peter,
I was in the same position with my Cadet but Roland quoted £1500 to convert the m/c back to eco sol. In the end Solutions ll suggested Citrosol Ink. I can recommend this ink – I personally could tell any difference between this and the full solvent ink and it’s a lot kinder to your m/c and lungs! With the new eco ultra/max sol inks I think the performance difference between full sol and eco sol is much smaller that it used to be.
Regards, Mike.
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well had the call an hour ago sorry cant make it 🙄
told me to install flush cartridges and do two powerfull cleans
and then replace with ink and do another two powerfull cleans
and see how that is (basicaly what has been done 4 times now)
i am going to leave it an hour now and see if there is any change
they have said they will send me some ink!derek
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Derek,
From your description it must be B & P you’re dealing with. I note its 23 days since you first posted your problems – how and why are you being so patient?Peter
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Mike,
As I understand it, by asking some people that know, there is no real conversion back. All you are doing is using a less damaging ink in components that have been improved against the damage.
Peter
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hi peter
i am almost at the end of my tether as they politely say. the machine was bought through an agent who is bending over backwards to get this sorted and has helped me out in the pastand i know he is trying his best however the latest from the main dealer is they have asked me to flush the system again and leave overnight and they are sending me new cartridges in the morning big deal if its just going in the bin.
don’t know what my options are if that doesn’t work
had to pass on a job this morning which has really got me on the rev limiter when i explode you will hear about it!Derek
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Ok.. is the test pattern that is 20%.. is it the same 20% each time?
Does top half or bottom half of the nozzles block? does the middle ones?
I have had a pump replaced which turned out to be a weak pump, however the tubing on the JV3 can be swapped between the heads to test the pumps. If you are medium cleaning which I guess is just a light clean of about 3-4 minutes, this is not enough time to soak loads of ink thru from the carts so I am presuming the ink is actually just running back a few inches.. which means that air is getting in somewhere.
Capping,dampers,pumps you said was replaced which leaves tubing, needle into cartridge, carts, o-ring on dampers brass connector nut, that is it.. air somewhere in those parts or parts replaced are not making a good seal or pump is weak.
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Hi Dave
the black and yellow are fine just cyan and mag the dropout is totally random,
i have just replaced flush with fresh ink carts and pulled through
and ran colour bars till clean, test print is fine as well.
i am going to run a good metre of print and then leave for a couple of hours then try the test print if its dropping out still :cry:.
i mentioned the connection to the carts etc but got the look 🙄
their must be some kind of seal where it pierces the cartridge (?)
they all seam to locate fine when pushed in.
when i have run the test print and it is dropping out i cannot see any air in the tubes from the damper up but if left long enough it may be visible i have had to to med head clean morning and night so there is ink at the heads
give me a couple of hours and i will report backDerek
Derek
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im just thinking again.. if the problem is at the carts or the needle, it would be making a pile of leaking ink around there.. so maybe all that side is fine.
if it was just the top of cyan in the capping station would be a bad seal at the top of the head… but as random then its not that…
The JV3-160S uses 3 heads to create 6 colours by sharing Black/Yellow, Cyan/Magenta and Light Cyan and Lt Magenta. The pumps are also shared as there is only 3 caps… Does the Cadet have only 2 caps and the Cyan and Magenta are together in the same head (2 dampers above the head?).
If that is the case then this is a capping station issue as two ink lines cannot fail at the same time unless there is a capping seal issue or pumping issue. Or the pipe work under the head, maybe the joins are poor.
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Hi Dave
that’s the strange thing about it the black and cyan share capping station and the mag and yellow share
and its the cyan and mag with the problems both capping stations are new pipes and pumpthere is no leakage anywhere from cart to head that i can see
but i would have though the problem i have is due to a vacuum type effect pulling the ink back or sucking air in
one hour to go
Derek
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I had a problem similar to this and it was the wrong O ring in the dampers which gradually melted. If the dampers have been changed it is not likely to be that, though.
It sounds as if everything has been changed except the heads ………
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ok.. yep.. o-ring or loose nuts on the damper.
ring sits inside the brass nut.. if crushed bably will seep and cause issues.yes.. heads is another thing.. but two at once?
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