LU-202: Replacing the Lift Wires

[raplma]

Re: LU-202: Replacing the Lift Wires

Hi Orestes
Good to see you around.
We run a lot of heavy stock and indeed know your scenario, and the causes are exactly what has already been said.
One thing to try - other than manual decurling - is to change the 'Output Delivery' selection to face up, rather than face down, we find that with some stocks changing the way they go through the exit rollers can effect curl, especially NCR on these machines.
When we got the c7000 which comes with the relay unit/de-curler it made a massive difference. There is a relay unit for your machine RU-504 although it may simply cool rather than decurl, they are very slim units, so won't add much to the overall length of the machine, the fun will be finding one!
See you around
Mark

P.S. respect for re-wiring your LU-202!

[allan]

Re: LU-202: Replacing the Lift Wires

Good thread.

Some real good suggestions. Would never have thought of printing face up but the curl would be in the same direction?. Only advise i can add is to make sure the pickup solenoid is adjusted properly and that there is adequate weight added to the front of the pickup assembly, there are a couple of weight supplied with the machine and the LU.

That is where the PRESS machines are better than the PRO machines. You can adjust the curl a fair amount on the B1250.


I missed what model of machine this LU is attached to.

[orestesp]

Re: LU-202: Replacing the Lift Wires

Hi Orestes
Good to see you around.
We run a lot of heavy stock and indeed know your scenario, and the causes are exactly what has already been said.
One thing to try - other than manual decurling - is to change the 'Output Delivery' selection to face up, rather than face down, we find that with some stocks changing the way they go through the exit rollers can effect curl, especially NCR on these machines.
When we got the c7000 which comes with the relay unit/de-curler it made a massive difference. There is a relay unit for your machine RU-504 although it may simply cool rather than decurl, they are very slim units, so won't add much to the overall length of the machine, the fun will be finding one!
See you around
Mark

P.S. respect for re-wiring your LU-202!

Hello,

Unfortunately, I already run all of my jobs face up - mainly because I need to monitor the output of the engine and because I recently discovered that my decurling roller is shot (I need to get around replacing that) and that causes problems with thinner stock.

Unfortunately the RU-504 isn't compatible with my finisher, but even if it was, it's almost impossible to find one domestically. You can't even find a used production digital press for sale in places like local listings, let alone a random finishing module.

Good thread.

Some real good suggestions. Would never have thought of printing face up but the curl would be in the same direction?. Only advise i can add is to make sure the pickup solenoid is adjusted properly and that there is adequate weight added to the front of the pickup assembly, there are a couple of weight supplied with the machine and the LU.

That is where the PRESS machines are better than the PRO machines. You can adjust the curl a fair amount on the B1250.


I missed what model of machine this LU is attached to.

I thought about doing the last two adjustments that are outlined in the service manual, but it was feeding everything I threw at it perfectly and I didn't want to cause any possible additional problems. In the bypass tray, the pick up roller is weighted down by the 2 weights you mentioned, maybe that's what makes the difference?

It's a C6500.