OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ofite.com
13
23. Adjust both regulators to the target back pressure for the test.
24. Open the top valve stem ½ turn.
25.
After heat time, increase the top pressure to 500 PSI above the back
pressure.
26. Open the bottom valve stem to initiate filtration.
27.
Collect filtrate and record the volume at 1, 7.5, and 30 minutes.
28. After 30 minutes, close both valve stems.
29.
Turn both regulator T-screws counterclockwise.
30. Open the outlet valve on the back pressure receiver to collect any remain
-
ing filtrate.
31. Open the valve on the manifold block to release any remaining pressure.
32. Remove the manifold block and back pressure receiver.
33. Allow the cell to cool in the heating jacket.
34. Once the cell has cooled to room temperature, remove it from the heating
jacket.
35. Slowly open the valve stem on the inlet side to release the pressure.
36. Unscrew the outlet cell cap.
37. Wash the filter cake and record the thickness to the nearest
1⁄32
".
38. Clean and dry all components.
