Heidelberg Printmaster QM 46 piling

[Jabs]

I recently installed new Saphira water forms and metering rollers to both units of a Heidelberg Printmaster QM46. Im getting ink piling from the 2nd unit to the blanket. Of course this contaminates the first unit. I have rechecked all roller settings which look good. Scum line on the plate looks good. The press was neglected but Im slowly getting back into shape but the new rollers have created a new problem . Im at a loss. I am new to this machine and my press experience is with large format KBAs. So basically I feel like a rookie all over again.

Can anyone help?

 

[turbotom1052]

How is your second unit contaminating your 1st unit?

 

[Jabs]

Ink from unit 2(nearest the feeder) is getting on the blanket in the non image areas. Since it is a shared blanket cylinder it then transfers to unit 1(nearest the delivery) and into the ink train.

 

[turbotom1052]

am I missing something here? I thought we counted our ink units in the order that they print. If the first unit to print is right after the feeder then how does that unit get a 2nd unit designation?

 

[Jabs]

Just going by the manual the Germans wrote

 

[realaqu]

saphira roller? I guess QM46 only woks well with bottcher rollers

 

[Printrich]

Don't be offended by this but are you sure you've got the forms in the right unit? A lot of people new to the qm's don't realise the damper forms are different, hard rubber in unit 1 and soft in unit 2. Also you are correct about unit 2 being over the feed, it rolls the ink 2nd onto the blanket.

 

[Jabs]

No offense. Great question. Yes hard rubber in unit 1 over delivery and soft in unit 2 over feeder.

By the way Im using the roller settings in the Heidelberg manual.