LS29 damping roller (U) copper optional

Can anyone tell me wy this copper roller is optional.
Do i get better results in printing if i use it. But less stable inkt/damp procces.
En when i dont use it. A bit less print result. But à more stabe inkt/ damp procces.

Does this sound ok?

 

mate I'm running a L5/28NL that has the option to fit the copper roller under the water form roller, unfortunately I did not receive the rollers with the press so I can't offer any input, but I'm sure someone out there must know.
cheers
jet screamer

 

Thanks mate

 

hello spoonder....iam working with a LITHRONE 40 size 101 72.........U roller is optional and copper but its up to A roller and not damping..........U roller was in the box and when i put it in the machine i was surpised from the results...........better inking and less water............U roller needs adjust...
hopes to help

 

Hey Panos. The press i am working. The U roller its up to the V roller.

 

Well if tried both ways. Printing with te roller gives a better printing result. But a less stable ink/damp process. Printing whit out the roller gives a more stable process. But a tiny bit less printing result.

I would recommend to use it if you have high print runs and with Full Color inks. If your printing a lot small print runs. So switching a lot. Or definitely in PMS.
I would recommend to print without the optional roller.