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Note: For low compressive strength samples 8.0-12.0 min is the recommended
duration. For high compressive strength samples 2.0-3.0 min is the
recommended duration.
9. Place the press direction control switch in the UP position.
10. Increase the controller output to 1.0% by pressing the UP arrow button. The press will
rise, contact the upper platen and stop. The press will then hold in an idle position for
20-30 seconds.
11. While the press is in idle, decrease the controller output to 0.0% by pressing the DOWN
button.
12. Wait for the press to engage the hydraulics. An audible change in pump rate will be
heard.
13. Place the controller in automatic mode by pressing the F1 button The hand indicator will
illuminate.
14. Start the program by pressing the F2 button. The Program Status indicator will
illuminate.
a. The program will increase the applied force to 150 Lbf clamping force in 30 seconds.
b. The program will hold the 150 Lbf clamp force for another 30 seconds.
c. The program will begin applying the chosen rate of force.
15. The sample will crush at its peak compressive strength.
16. When the sample fails, the controller will automatically terminate the program and
remain in the standby state. The message "Sample Crushed Alarm" will start scrolling.
If a sample fails gradually, without a sudden fracture, the controller may not
automatically terminate the program. In this case, the operator must manually stop the
program by pressing the F2 button. In the event that the operator manually stops the
program the peak value is not stored on the display.
To stop the press manually:
a. Place the press direction control switch in the OFF position. This will stop the press
from rising.
b. Reset the controller program by pressing the F2 button (the Program Status indicator
will turn off).
c. Press the F1 button to switch from automatic (AUTO) mode to manual (MAN) mode.
The Hand indicator will illuminate.
17. Reset the rate alarm on the controller by pressing PAGE and SCROLL together.
SECTION 2 – OPERATING INSTRUCTIONS
2-5
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