uppo72, I was so new I didn't even know to question why AC vs DC. When I was taught that way by the wizard from the motor shop and a 30yr adjuster and have just done it like that for years.... As far as the jack bolts Otis used a isolated 2 piece platform with isolation pads between the two sections. The load weighing switches are set as the isolation pads compress with a load. And the jack bolts are located on all 4 corners so you can run them up and keep the isolation pads and switches from getting creamed when you do a full load full speed safety set. And if you do not run the jack bolts in you will have to reset all the load weighing switches or as we find on a lot of jobs we take over. Have poor leveling performance with the need to bring in weights to set things backup. I have been trying to find a newer style load weigher to replace the old micro switched but i am having problems finding any with the 6 or 7 outputs needed to replicate the Otis design. Including anti nuisance and hall call bypass.
