That’s a model dated from the ’90s. Vulcan quit using ML#s years ago. I went to Vulcan’s resource center and narrowed it down to your model:
Product Category SearchÂ
Â
One listed as a service manual for the E-30-O dated 10-91 came up:
https://resources.itwfeg.com/sites/resourcecenter/vfeg/ProductDocumentation/F30764.pdfÂ
Â
That model isn’t on the cover, but that’s where their very own website led me. In that manual are wiring diagrams, which are a bit more difficult to read when you are just wanting theory of operation.Â
Â
That’s the best you’re going to get on the internet from a nearly thirty-year-old manual. The quality isn’t great either, since it’s photo-copied.