MTS Model 286-31 Transient Permeability Pore Pressure Intensifier - Manual (Page 27)

Purging and Filling the Fluid Lines
286.31 Transient Permeability Pore Pressure Intensifier Operation 27
2. Purge the Reference Volume 1 lines of air and fill them with fluid.
Turn the Permeability Input valve to the Open position.
As soon as the fluid coming out at the triaxial cell’s lower pore pressure port
becomes bubble-free, go on to step 3.