Brent in IA
Member
Hi all, I have a Puma upright 220/240v compressor that is rated at 150 psi max. It currently is shutting off at 90 psi and always has since new. I recently got a used tire changing machine and realized that 90 psi is a little low so wanted to increase to 120 or so but when I read the owner"s manual and went on their website it looks like they "preset" the pressure and don"t tell anyone how to reset. I have attached a picture of the pressure control and the two screws (red arrows) that I "think" would control the setting but wanted to ask some opinions before I starting messing with it...can anyone help?