MTS 85X Damper - Manual (Page 33)

Install the Specimen
Damper System Operation Operation 33
You can use the Set Point control to fine tune the alignment of the specimen
and actuator positions.
15. Use the Lock Control to clamp the crosshead to its current position. The
clamped symbol is shown at the right. Wait 30 seconds for the locks to fully
clamp the columns.
16. Install the specimen into the lower grip or fixture.
17. You may need to reposition the crosshead to accommodate the starting
position of the specimen.
A. Use the Lock Control to unclamp the crosshead.
B. Use the Lift Control to lower the crosshead until the specimen is in or
near its starting position (you can fine tune the starting position in Step
D).
C. Use the Lock Control to clamp the crosshead to its current position.
D. If needed, you can use the Set Point control to fine tune the starting
position of the specimen.
18. Depending on the test requirements, zero the displacement signal.
19. Set the Hydraulic Flow switch on the control panel to High. This returns
the actuator flow to its normal condition.