Locate the Air Valve on the back of the Board on the right side. Note the three connections from the Air Valve.
Take the Clamp Valve Plug (Grey cable with the Green Power Plug) and plug it into the Clamp Valve (the matching Green Plug on the top of the Gantry).
Take the Clear Air Line with the Red Connector from the Air Valve and Plug it into the Air Line with the Red Connector at the top of the Gantry by giving it a 1/4 turn onto the locking connector.