https://imgur.com/a/SZheBQ9

I bought the 120v primeweld welder used. The amperage knob is 1-10 but the duty cycle info is on the back in amperage. I don't understand exactly what the amperage is for eachcknob so I'm unsure of how to stay within the duty cycle quota. also don't exactly know how to ready the duty cycle info. It seems to come in 3 parts. What are the 3 different graphs in the picture I posted above referring to exactly. I'm welding 6013 3/32 stick rods for now so any info on that particular duty cycle. Or how to read the graphs and the amperage voltage knob would be greatly appreciated. I don't wish to over work my knew welder.

I triggered my extensions plug to short as well could that because I over worked the machine or something else