JV3 Nozzlewash problem

[David Rowland]

if it repeats over and over again, you might also see that the pump might not be sucking very well, this is a sign of pump failure.

But only change it if you are experiencing problem with nozzle outs or fuzzy test prints.

[Steve Newell]

Hi Dave
It seems to be an intermittant problem, I tried again later and it worked, I tried again this morning and it didn’t. Is a new pump easily fitted DIY or is it best to let an engineer do it?

[John Thomson]

Pumps are an easy DIY fit on a jv3 sp2.

They sit under the capping station, access by removing the panel at the rear.

John

[Steve Newell]

Thanks John, I will have a look this weekend.

[David Rowland]

you might see signs of rubber bits or ink in the pumps.

[Stafford Cox]

The pump is not ‘locking off’ when the solution just drains away. Personally, if it’s one of our maintenance printers, we would replace the pump regardless as they are a very inexpensive part and easy enough to fit (just replace it like for like and you’re done) and it’s far better to do that than having to replace a head later on.

Pumps are available from lots of different sources but make sure you get a solvent pump. Some are better quality than others.

Good luck

Stafford

[Steve Newell]

I took the back of tonight to look at the pump and it looks like you guys were right. There is black ink everywhere. I’ll put on a new pump and see.
Many thanks all your replies.
Steve

[Steve Newell]

I took the back of tonight to look at the pump and it looks like you guys were right. There is black ink everywhere. I’ll put on a new pump and see.
Many thanks all your replies.
Steve

[Steve Newell]

Hi
I have replaced both the pumps and also replaced the capping heads while I was at it. The cyan/yellow pump is working no problem but I am not getting any black/magenta through the pump. I have tried ‘fill ink’ several times but to no avail- the resevoir is now holding the cleaning fluid though.
I done a test print and I am getting no black at all. Has anybody got any ideas why Its not working?

[Julian Mildner]

If you do a disway wash, does the pump pull the cleaning fluid away?
If it does then you have a cap problem, if it doesnt then you have a faulty pump.

[Steve Newell]

Hi Julian
Yes, the pump is working as it is pumping the cleaning fluid away now. Would the capping problem stop the black from printing though?

[Julian Mildner]

If you are not getting a good seal between the cap and the print head then it will not pull ink through when you run a clean cycle. If you have done a nozzle wash then there could be solvent in the head rather than ink which would normally be pulled through when you run a clean cycle.

If you have a syringe you can try connecting to the pipe from the cap (where it joins the pump) when you pull with the syringe, you should get some ink but you should also feel some resistance. If there is no resistance and you can hear air being pulled in then your head is not capping correctly.

[Steve Newell]

Many thanks Julian, I will give it a try.

[Luke s Bremner]

I had the same problem, I put a new capping station in. Was not getting a good enough seal on the heads.

[Stafford Cox]

It’s not that unusual to get a faulty pump, we’ve had a few lately from one of our suppliers. As Julian said though, replace the pump with a syringe temporarily and see if you can pull through from there. Post the results and we can tell you which way to go from there.

Stafford

[Steve Newell]

Just a quick thank you for all the replies. Problem nearly sorted now, I changed both pumps but the new black/magenta pump was faulty. (stafford you were right). Changed it for another new one and problem sorted. Now just trying to recover the black head by constant cleaning. Thanks again Guys, I have learned a lot about my machine.
Steve

[David Rowland]

you may need to soak the head for a while

[Stafford Cox]

quote Dave Rowland:

you may need to soak the head for a while

Agreed. If the pump is working well now, use the nozzle wash function and leave it on a 99 minute when you leave for the day, then do that for the next fwe evenings. Failing that, it’s print at double the pass rate or new head time I’m afraid.

Best of luck

Stafford

[jim G]

the way i purge the heads is to to disconnect the input tube to the pump and hook it up with a plastic syringe. several inverted purges later and the heads are primed for print.