MTS Material Test Systems - Manual (Page 61)

Warning:
After you turn off system hydraulics, do not come near the load frame for at least 30 minutes
– actuator motion is still possible.
Unexpected actuator response can result in personal injury or equipment damage.
Actuator motion is still possible after you turn off system hydraulics. Unexpected actuator
response can result in personal injury or equipment damage. After hydraulic pressure is
turned off, wait at least 30 minutes before coming near the load frame or restarting the
hydraulic system.
5. Remove hydraulic pressure.
Wait at least 30 minutes before coming near the load frame or proceeding with the operation procedure.
7.5.0 Install the Specimen
The procedure for specimen installation depends on which load frame you have. The Model 370 Load Frame
has an actuator speed switch and handset that are used for specimen installation. The other load frames
(318, 331, 359) do not have these features. Once the specimen is installed, the servo loop adjustments are
the same for all load frames.
7.5.1.0 Specimen Installation with Model 370 Load Frame
The procedure to install a specimen varies due to the variety of test fixtures, grips, and the type of specimen
being installed. This section should be considered a guideline. You need to modify this procedure to suit your
equipment.
Prerequisite
You must have the necessary grips and/or fixturing installed. You must also have the controller set up to
control the actuator movement, and you must have a test program defined.
MTS Material Test System Operation 61
7.0 Operation