OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ofite.com
7
Operation
Before beginning a test, make sure all switches are in the off position and all
valves are closed.
1. Loosen all eight set screws on the cell cap with a torque wrench.
2. Unscrew the cell cap and remove it from the cell.
3. Prepare the cement slurry as described on page 6. Carefully lower the
cement molds into the test cell.
4. Remove the handle from the mold.
5. Lubricate the threads of the cell cap with high-temperature thread
lubricant (#165-44).
6. Place the cell cap back onto the cell and screw it in place hand tight. Be
careful not to damage the seal rings and the cap itself.
7. Tighten all the set screws on the cell cap by hand.
8.
Adjust the supplied torque wrench to 90 inch-pounds. Tighten the first
screw until the torque wrench clicks. Skip four screws and tighten the fifth
until the torque wrench clicks. Continue in this manner, tightening every
fifth screw until all eight have been tightened.
9. Now adjust the torque wrench to 180 inch-pounds and tighten all of the
set screws as described in the previous step.
The cap must be tightened consistently and uniformly every time to
create a good seal.
10.
Loosen the thermocouple compression fitting in the center of the cell cap.
Insert the thermocouple through the compression fitting. Tighten the fitting
finger tight and then loosen it ⅛ of a turn.
11. Make sure the “Air to Cylinder” and “Pressure Release” valves are closed.
Turn the “Regulator” completely counter-clockwise.
12. Turn the “Pump” switch on.
13.
Open the “Fill Cell” valve. Water will flow into the test cell and the
displaced air will be forced out through the loosened thermocouple
compression fitting.
14.
Keep a ⅝" wrench handy and watch the top of the cell. When water
begins to flow from the compression fitting, tighten it with the wrench. This
will ensure that no air remains in the cell.
