I connected the ~2 ft long KF 16 to KF 25 tubing from the Agilent TwisTorr 74 FS Turbo Pump to a 4 ft long KF 25 tubing which was connected to the Agilent IDP 7 scroll pump. I used the included filter inside the o-ring going to the scroll pump.
Now that the vacuum system is fully connected, I opened up the gate valves to the turbo pump and the ion pump. I also connected the power cord to the scroll pump but didn't plug it into a wall. I flipped a red switch so that the scroll pump is expecting 110-125 V instead of 230 V.