
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ofite.com
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The test cell will still be under approximately 600 psi (4.140 kPa) pres
-
sure. To avoid possible serious injury, position the cell with the outlet end
down and cool it to room temperature before disassembling. The cell
must be below 100°F (38°C). Cool for at least one hour at room tempera
-
ture before removing the caps.
37. Place the cooled cell upright with the
outlet side down. The optional stand for
the HTHP cell assembly (#171-190-028)
makes a great cell holder. This will help
preserve the filter cake. Open (loosen) the
Inlet valve stem to bleed off pressure from
the cell body. There should be a noticeable
release of pressure from the cell.
Hold a rag or piece of paper over the valve
stem in order to catch any liquid or solids
that might be ejected under pressure from
the cell. This will help prevent an unsightly
residue build up on the ceiling which may occur over time. It may be nec
-
essary to return the cell to the heating jacket and use the stop-pin in order
to loosen the valve stem.
Pressure should NOT be relieved from the cell by opening the outlet valve
stem as the filter cake may seal off the cell.
A good indication that pressure is trapped inside the cell body occurs if
the cell caps are unusually difficult to loosen. To relieve any trapped pres
-
sure, an OFITE Pressure Relief Tool (#170-91) may be inserted through
the inlet cell cap hole which will relieve any trapped pressure inside the
cell. Ensure this function is performed on the inlet side of the cell as the
filter cake may seal off the outlet end of the cell.
38. Unscrew and remove the cell caps.
Safe Release
of Pressure
from a Cell
Stand for HTHP Cell Assembly
(#171-190-028)