Combines zeroing concaveIJ

[tbran]

Hmm, actually when the concave is drawn down to "0" the upper concave should exactly match the upper grate to the cylinder bars. Due to machine tolerences there will always be a high bar. In other words there are 7 cross bars best I can remember on the upper grate. On a new machine each bar should contact at same point. As a machine wears and the bars take a set USUAllY the center or lower part of the upper grate will be a few thousandths wider. IF yours is within say a sixteenth of an inch or so you are OK, if you are a 1_4" or more you have a warpage or loose or bent pivot bolt or block. When the concave is set to zero best you and the front bar is set to .43 or 7_16ths and then mowe out to a setting of 8 on the gauge, it should give you a setting of .5 on the top grate bar, .7 on the lower bar of the upper grate, and .85 on the first cross bar on the lower grate at the front and .99 or 1" at the wear strip bolted to the stone door. Hope this helps.

 

[j72]

thanks tbran- that straightened my thoughts out.

 

[NDDan]

Hey Tbran I found something weird today. I think you may of said something about this earlier. R75 not displaying concave clearance. It read 0.00 untill it got maybe half way open and then jumped to 1.5 for the rest of the way. Did a bunch of voltage testing from the potentiometer all the way to EIP. Everything seems to work perfectly so I just recalibrated. Display now works. I am not sure why I had to recalibrate. The weird thing about it is we installed the new 2.0 software prior to harvest in a lot of machines. We did not think to recalibrate the concave readings. I find that when I recalibrate that reading says zero and I am still 1_4" from bottoming electric actuator. I repositioned potentiometer to start with higher voltage and still similiar results. I had to swivel potentiometer after calibration to make it accurate. All these machines were likely running close to 1_4" wider than reading was saying. That explains why I got some calls on tring to clean up sample in tough wheat. If they didn't keep holding rocker after gauge read near zero they surely would of had trouble. I checked and calibrated another machine to find the same thing. I hope I didn't miss a bulliton on this. I think there may be a software problem. This could sure throw off a guy if going by display. I'm going to have to check this out further. Have you noticed or run into thisIJ