Knowby Dairy Systems Start Valley Pivot Ensure water is on. Ensure water is on. 1 Step 1 of 5Ensure water is on. 2 Step 2 of 5Choose direction, forward or reverse. 3 Step 3 of 5Check depth of application. 4 Step 4 of 5Change by pushing depth, then the millimetres, 5 and enter. 5 Step 5 of 5Push, start.