You might all be aware that Zortrax is one of the few printers that you can reliably leave printing for 1-3 days.
Because of this, I am building for myself a checklist to follow before very long prints (24+ hours).
Please feel free to add to this from your own experience, it might help others but also me and I am thanking you for it. Don't be shy, please add!
I will try to keep the list updated with your input. Please write 2a) if your comment goes between 2) and 3) for example.
0) UPS working and charged, in case of power outages
1) filament available on spool using a scale or whatever method you prefer
2) tangles on spool
3) spool can rotate freely
4) filament diameter
5) clean dust sponge (I use one before the filament goes into the tube)
6) extruder drive gear is clean of filament debris (if you hear random knocks than there is for sure debris there)
7) extruder idler bearing rotates freely
8) extruder assembly is clean of debris
11) heated bed is cleaned accordingly (take it out, clean under the perf board, straighten perf board)
12) heated bed is level
13) scuff the board with emery cloth (or use your method)
14) apply gluestick or Z-Juice (ABS/acetone mix)
15) raft is laid uniformly, a little smooshed
I usually inspect the print until first layer is laid and only then leave the printer do its job alone.
Edited to add new lines.