Calibration is necessary every time you change tips and/or materials. (Note: This information is also in your User Guide)
Step 1: Install a clean plastic sheet and allow vacuum pressure to reach -15 Hg or
Step 2: Go into the Calibrate menu and run Auto Z Stage Zero Calibration. If this
calibration fails, follow Steps 2a through 2i to set the Z Zero with Shim.
2a From the main menu on the keypad select Operator Control and
2b Select Calibrate and press enter.
2c Select Set Z Stage Zero and press enter.
2d Select Set Z Zero with Shim and press enter. The Z stage moves into
position and the head moves out.
For more information, download the full best practices document here.