Instructions - G40 Grainfather G40 Instructions.pdf 2 MB Download Flip* through the instructions or Download PDF from the flipbooks below, or at the bottom of the article, for the G40 All Grain Brewing System instructions. *Expand to full screen for easy reading Related articles Video - How to Guide for Using the G40 Technical Specifications - G40 Is CIP (clean in place) possible on the G40? How to use the G40 Whirlpool Arm My G40 sight glass doesn't always show the same measurement or appears to be off by a little bit - is something wrong with it?