MTS Series 642 Bend Fixtures - Manual (Page 37)

Series 642 Bend Fixtures Product Information Operation 37
Operation
Run a Test with Series 642 Bend Fixtures
Running tests with the 642 Bend Fixtures involves the following:
• Positioning the bend fixture halves for specimen installation.
• Adjusting roller block assembly spacing (if needed).
• Installing and centering the specimen on the roller block assemblies.
• Removing the old specimen when the test is done.
1. Position the bend fixture halves.
A. Make sure that the crosshead is locked.
B. Switch on electrical power at your test controller.
C. Apply high hydraulic pressure to the load unit.
If you are installing another new specimen, position the actuator so that
the bend fixture halves are far enough apart for easy specimen
installation. Then skip ahead to step Step 3.
If you are adjusting the roller block assembly spacing, position the
actuator so that the bend fixture’s halves are far enough apart to easily
adjust the spacing. Continue on to step Step 2 before going on to step
Step 3.
2. Adjust the roller block assembly spacing.
A. Remove hydraulic pressure from the load unit.
Your hands are in a crush zone when you adjust roller block assembly
spacing
Your fingers and hands could get crushed.
Make sure you have locked the crosshead and have removed hydraulic pressure
from the load unit.
WARNING