Elevator Forum

Thanks for all the input. I swapped out one of the tachs on the most problematic unit this afternoon. I also added 2 polycords(only had 6 out of 8). A...

Hi Rolly,Thank again for the response. I’m sorry I’m not familiar with the high speed nulling procedure. We adjusted the tachs offset to each other an...

Thanks for the response. The units are a very old Otis gearless, double wrapped 1:1. They are running 500 fpm with the scd drive. We do have the lapto...