dampening roller problem SM102-4 - 2006 or 2003

Hi there,

have you ever seen this or any idea?
Its just few inches at one side. The other part of the dampening roller looks good.

This is the second good dampening roller that got destroyed in a few weeks.
After the cleaning program i saw the little rubber pieces.
Last week we worked and nothing like this was happening.

Maybe bearing problems. My mechanic is having fun with corona and can´t help this week.

autoclose thread in 1 month.

Chris

 

For this follow things to check
1) dampening brackets
2) roller setting.
3) roller it self
For the above all you need someone specialist (Heidelberg application/mechanical) engr

 

I WOULD MAKE SURE YOUR AIR PRESSURE IS CORRECT IT LOOKS LIKE ONE SIDE IS STAYING ON WHEN WATER IS OFF.

 

Dear Chris
As other colleagues said.
But I faced the same problem, and it was the intermediate roller adjustment (too much pressure) at one side, because there was a problem in the roller holder and the roller's screw slips out, so the operator turns the screw more and more in order to get the screw in, which causes more pressure.

 

Check the dampening roller adjustment with the intermediate roller (Z), it is the accumulation of ink on the rubber that causes this problem.
Also check the roller bearings if they are defective.

 

Are you certain that the fountain solution in your water pan is running at its intended level? Usually when the level drops too low you will set off an alarm, but if your level sensor is not working your pan could be running low and you wouldn't know it. When the level in your pan drops dangerously low, it doesn't happen evenly across the entire width of the press. When the level gets low, and the dampening system runs dry it will do the kind of damage your pictures show. Ive learned this costly lesson the hard way. This is what often happens....... As the water lines get dirty and clogged with all kinds of algae and nasty stuff, it slows down the return of fountain solution to either the tank, or the sump, depending on how the press is equipped. Once the returns get clogged, the knee-jerk reaction of the pressman is to slow down the feed of solution at the valve, on the bottom gear side of the water tray so as to avoid the water tray overflowing. This slowing down of water feed only solves the problem for a short time. If the system is not soon flushed out and the lines cleaned then you will need to again slow down the incoming water feed. Youve now got fountain solution barely trickling into the pan. Your water level seems fine, and you can be printing without problems for awhile when suddenly a large chunk of return line obstruction breaks free and opens up the return line passageway. This results in a draining of the pan because now your feed is way too slow to keep your level at its proper height in the pan. If your level sensor is inoperable you will not know that your water pan is going dry. What you will get is like the pictures you posted!!! Not saying that this is the only answer but its one that has not been mentioned. Ive detailed on this forum in the past the way that I like to set my water feed and water return after a complete flushing, and blowing out of the lines. You will have to search and find the link if you think this may be your problem. Good luck with finding a solution.

 

From what I see the problem you have is on the dampening roller, please confirm.
turbotom, I think that your theory causes a problem with the bubbler roller, I too had this kind of problem.
But when it comes to wear on the dampening roller I think it's a bit far from being a solution level problem

 

Thank you Tom.
And in some cases running dry without the level sensor is activated can cause dampening motor damage.

 

What is a bubbler roller?

 

On the sm102 it is the roller with a diameter of 108.
C is the roller immersed in the basin

 

I orderd a new "Z". Have to wait for it. The bearings were changed 2 years ago.
My teacher told me over 10 years ago that somethingt with this "z" roller isn´t good.
So let´s try this.
Looks the air is working correct. Without water you can´t print. Status red an beep beep.

 

The Z-roll is a walking roller and it balances the amount of water and the amount of ink on the plate.
It is made of hard material and it must be smooth if it is not well adjusted or else it is not smooth it accumulates ink on the dampening roller and the inking roller.

 

It was the Z. After changeing its running and cleaning like a new machine.

 

Bon travail