/diy/ - Do It Yourself

I'm trying to rewire an autoclave I was given. The thing has a chinese 3 prong plug (this exact plug http://en.shsumiya.com/products_detail3/productId=37.html)) and it's original cable is rated at 16A250V. The appliance draws 2kW at 250V and about 9.09A. I'm trying to rewire it so I can use my canadian dryer receptacle which accepts a 4 prong nema 14-30 plug. I ended up buying this cable https://www.amazon.ca/gp/product/B0014KO11O but the conversion from 3 prong to 4 prong is confusing me since I have absolutely no knowledge about electrical wiring. The 4 prong cable has an extra live red wire and I have no idea what to do with it. Can I just wrap it in insulation and ignore it? Do I have to connect it to the same lug (not sure if that's the right term) as the first black live wire? From what I understand, as long as my appliance draws less power than my source and the cable/wire is rated at or above the required specs I should be ok. It's just the wiring that's confusing me. I don't know what info is pertinent so I'll start with a schematic of the autoclave.