MTS Systems 318 Series Product Information page 71

318 Load Unit
5. Adjust the Pressure control for the desired hydraulic pressure.
Pressure
More
6. If you exceed the desired pressure setting, adjust the Pressure control
counterclockwise 1/2 turn. If pressure setting exceeds 20 MPa (3000 psi)
cycle (clamp and unclamp) one of the grips. Return to Step 5.
Less
Operation 71