Canning Dried Prunes Apply Vacuum - 18 Bernice pulls down the lever on the Tilla Vacuum machine and it begins to exert a vacuum on the cap. As the dial on the machine changes from red to green air is extracted for the jar. When the dial changes to green the vacuum in complete. Lift the lever and remove the hose. Then you can lift the cap off of the jar. ⇦ Back to Step 17 On to Step 19 ⇨Return to Canning Dried Prunes - Page 3 |