"Transients from the lift mechanism"
Reminds me of very long (200+ m) cable runs of RS422 Multidrop running Wyse terminals and a bunch of printers to a SCO 3 server (386, 4Mb RAM) in a superyacht shipyard running frikkin big welders. It worked most of the time, only requiring terminal resets a few times each day.
Also, a similar system in an aluminium refinery. Of course, it wasn't the transients that were impressive there, it was shovels standing up by themselves in the eddy fields. I can't remember what voltage they ran the refinery vats at, but it consumed hundreds of kiloamps.