MTS Model 286-31 Transient Permeability Pore Pressure Intensifier - Manual (Page 21)

Purging and Filling the Fluid Lines
286.31 Transient Permeability Pore Pressure Intensifier Operation 21
6. Prepare to purge the Pressure Intensifier of air and fill it with fluid.
Turn the Permeability Fluid Input 1, Permeability Fluid Input 2, and
Reservoir Return valves to the Close position.
Turn the Intensifier Fill valve to the Open position.
7. On the test controller, monitor the displacement sensor output.
8. Purge the Pressure Intensifier of air and fill it with fluid.
Slowly turn the Manual Control clockwise, then counterclockwise to fully
stroke the Intensifier’s piston.
Watch the displacement signal to make sure you fully stroke the piston.
When the bubbling at the Fluid Reservoir stops, use the Set Point or
Manual Control to fully retract the Intensifier’s piston.