Hey guys. First post here. I just recently purchased a used National conveyor dryer. I don't have the model # on me, but it's an older unit, grey in color, 12ft long, 220, 24" belt. It has been sitting awhile, and the heaters kickoff prematurely and won't heat up past 70-100 degrees. A technician checked it out and said the temp controller was bad, so we bought a universal one and are trying to wire it up, but having a few issues. Right now I'm just trying to gather more info, and if anybody has an owners manual or a wiring diagram of the control panel, that would be huge! Mainly looking for descriptions on wires 24, 25, 26. Thanks in advance.