Z-axis failing to initialize on new printer. Z-Axis screw all the way down

First off I love my original Cetus3d, it’s a tank - So I ordered a 2nd for work.

 

After
turning it on and hitting ‘initialize’, the Z axis motor just tries to
go up constantly and as expected the stepper starts to jump and click. I’ve tried lowering the z-axis hex-screw with out luck. It’s all the way down now.

 

Any suggestions would help

 

irgendsowas 2018-1-31 19:50 edit

I'm facing the same issue, 

tighten the belt with two fingers on the bottom does help me.


Try tighten the belt!


edit:

https://www.cetus3d.com/community/forum.php?mod=viewthread&tid=442

First thought after looking your older thread before posting. No luck with this trick. 

Is the crossbar engaging the limit switch at the top of the Z axis? Unless they've changed the design since my printer, you should be able to see and hear the carriage hit the switch at the very top.

Hello!, I have the same problem. He started the Z axis and now the others too. On my printer I don't see the limit switches.
Is it normal that they are not there?
I enclose the photos where you see the point where the screw stops on the shoe.

cetus1_s.jpg

cetus2s.jpg

I was really hoping to log in and see a solution to this problem.  This just started on my printer out of no where which has been fine to date.  Anyone having any luck yet?

I got mine to work.  I just tightened down that screw at the top of the z axis.  I only had to turn it maybe two full turns and then it would not turn anymore.  I then tried to initialize again and it worked as normal.  I hope this helps some or you