1060- toner build up in recycling pipe.

[ash_572]

toner is bulding up in the toner recycling pipe situated infront of the pcu. toner seems to get rock hard. genuine toner is being used. re devd it. wat can it it be?

[unisys12]

Only a few things can cause this...

First check the gears, at the bottom on the tube, that provide drive to the auger. If they even look worn or out of shape, change them.

Also, make sure that the auger is not damaged. Such as loose, bent, or even twisted slightly. If so, change it.

Last but not least... not meaning to insult you or anything, just one of the things you have to remember to check... make sure that your shutter at the top of the tube is open. I can't tell you the number of times I have went behind others were this has happened. Even once on a brand new machine!

One other thing I thought of, speaking of the top of the tube, make sure your seal on the dev unit is not damaged or torn. If torn, it might cover the input on the dev unit. Even if blocked partially, it would cause a back up over time. Just a thought.

[ash_572]

all gears, tube and coil are brand new. shutter is open at the top of the tube. all seals are not damaged. the machine is also throwin up a an sc 590.

[Jomama46]

590 means the vertical recyling mech at the rear of the machine has stopped. There was a firmware upgrade that may be related. It said that even tho a 590 is displayed it may be a 495 which is the diagonal pipe coming from the transfer unit that is stopped. In that case, examine the gears and drive belt on the diagonal pipe.
Are we having fun yet?

[Pandy]

Check your cooling fans/filters, if they aren't clean you will get build up on the supply and waste. You might see if removing the ozone filter is necessary, not recommended but worse comes to worse. The optics filter is constantly dirty on most machines, make sure it's clean

[schooltech]

This machine has a two staged process for toner "evacuation:"

1) The transfer belt will transfer the excess toner as waste

2) The drum will use its internal auger for toner recycling

If the toner is being chunked up, it's getting glazed somewhere, either from excess toner getting stuck in the auger system or from too much heat cooking it. As Unisys states, the top of the pipe does need to be toward the bottom, but unless something is broken, the 1060 doesn't like to have the toner bottle closed unless it's opened properly. The funny thing is that the 2060/75 series will let you close the toner assembly with the recycling tube closed and not care.

At one time, the vertical pipe at the back had a check valve update, but that was for the early machines.

What is the monthly volume on this machine?

At the top of the dv unit, the toner recycling unit (a maintenance item) needs to be changed, as it takes the recycled toner and crushes it up with the screen as it sends it into the dv auger system.

Those two gears that mesh at the front of the drum can be a bit of a problem. What I've had to do on some of them is take the three screws off of the pipe at the front of the drum unit, and with a drill bit I had to slightly lengthen the holes from top to bottom to give them a bit more "give" so the gears will mesh a bit better. That takes care of the problem with the gears not meshing well.

[Ollie1981]

All good advice from everybody who's posted so far....

If all those suggestions fall flat then I have something to relate from a machine I had last year that was doing this chronically:-

Take out the development unit and check the uppermost coupling on the toner supply unit (the one that drives the "tea strainer" toner separation case) make sure that is turns and doesn't feel like it's under excessive load.

If you're unsure, swing out the toner bottle holder and trick the front door whilst you run off a copy, look at the gears at the front of the separation unit and make sure that they are turning at all times whilst the print engine is running (and at the same time check the gears on the diagonal PCU recycle pipe)

The reason for this is thus:-

I had a machine the same as this (a 1075) where the toner supply unit had seized (or damn near seized) and had shredded the rubber coupling on the development drive. The rubber coupling isn't available seperately and I had to fit a development drive assembly as well as a new toner supply unit at eyewatering cost.

Because there was no drive to the toner separation/dev unit waste coil, the whole lot had backed up, all the way down through the PCU recycling system breaking both augers, needless to say the customer had ignored the grinding noises the copier had been making for weeks and only placed the call when they were getting copy quality issues from the now wrecked drum.

If you are getting 590/495 then have a look at the recycle coils in the rear of the machine. I've had this code once or twice just for a dirty sensor. The other times the coils had been blocked with hard toner and needed a good vaccing out.

[ash_572]

the volume on this machine is very high. its been used in a school non stop. i figured out the waste coil at the front of the machine in front of the pcu had stopped turning and threw up a code. one of the gears on the top right of the pipe was goosed. replaced and ok. replaced the pipe aswell. this seems to buils up hard toner inside the pipe. this has happened before and am very certain that this will reoccur again in a few weeks time.

p.s am tryna help out a colleague.

[TonerMunkeh]

If you think it's going to happen again in a few weeks time you need to think about replacing the entire toner recycling system. Start with the lower PCU, there might be a coil that is slightly twisted. Change the toner seperation case on the top of the dev unit, check the transfer unit waste coil. Take the back off the machine and vacuum all the pipes out and make sure the coils are turning correctly by spinning the drum flywheel (with the PCU out) and giving the pipe a little squeeze, you'll feel the coil moving. If any of them are binding, they'll need replacing.

[Shadow1]

I've had several machines where the gears that sit at 90 degree angles and drive the front waste auger don't mesh very well - all it takes is a little wear in the bushing on the toner pipe to loose drive. It gets intermittent before it dies - the clumps that result can cause problems anywhere in the recycler system.