Sterlitech SEPA CF CELL Suplemento
SEPA CF CELL
ASSEMBLY & OPERATION
MANUAL
1. INTRODUCTION ........................................................................................ 1
2. SEPA CF CELL COMPONENTS............................................................ 2
3. SEPA CF CELL ASSEMBLY......................................................................4
4. OPERATION OF THE SEPA CF CELL .................................................. 11
5. SUPPLEMENTARY OPERATING INFORMATION ............................. 12
6. ACCESSORY AND SPARE PART ORDERING INFORMATION ....... 13
7. RETURN MATERIAL AUTHORIZATION ............................................... 14
8. WARRANTY ............................................................................................. 14
9. TECHNICAL ASSISTANCE .................................................................... 14
APPENDIX 1: SEPA CF CELL APPLICATIONS ........................................ 15
APPENDIX 2: BENCH SCALE FILTRATION PRODUCTS...................... 16
CONTENTS
1. INTRODUCTION
The SEPA CF Cell is a laboratory-scale crossflow filtration unit that is designed to evaluate
the performance of flat sheet membranes in a variety of applications. It simulates the flow
dynamics of larger, commercially available membrane elements such as industrial spiral
wound membrane elements. By using a combination of Stainless Steel (SS) shims, feed
spacers, and membranes, users can vary the operating conditions and fluid dynamics over
broad ranges.
Table 1 outlines the operational parameters and technical specifications of the Sepa CF
Cell.
Prior to operating or servicing this device, this manual must be read and understood.
Table 1: Sepa CF Features and Technical Specification
Parameter Description
Membrane Active Area 140 cm² (22-inch²)
Hold-Up Volume 70 ml (2.4 ounces)
Maximum Pressure: 316SS Cell Body 69 bar (1000 psig)
Maximum Temperature: 316SS Cell Body 177 °C (350 °F)
O-rings Viton* (Other materials available)
pH Range Membrane Dependent
Cross Flow Velocity Variable
Dimensions
Slot Depth 1.09 mm (0.075 inches)
Slot Width 95.3 mm (3.75 inches)
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2. SEPA CF CELL COMPONENTS
Verify that the Sepa CF Cell was shipped complete, intact, and undamaged.
The complete Sepa CF Cell includes:
1. Stainless steel cell body: top and bottom
2. Anodized aluminum cell holder with piston and high pressure gauge
3. Tubing and hardware kit, which includes:
Cell Top Cell Bottom
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Cell Holder
a. Feed Spacers
2.1 ADDITIONAL EQUIPMENT
The Sepa CF Cell also requires additional equipment to be operated, which are sold
separately:
• Hydraulic hand pump to pressurize the cell holder
• Feed Pump
• Feed Tank
• Filtration membrane packs
• Assortments of shims and additional spacers
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5. O-rings (2)
4. Concentrate control valve with high pressure gauge
b. 1 pack of 5 permeate carriers
c. 1/4 diameter permeate tubing (91.4 cm (3 ft))
Concentrate Control Valve
3. SEPA CF CELL ASSEMBLY
After verifying that all of the necessary components were shipped and present, you can
begin the assembly of the Sepa CF Cell.
3.1 CELL BODY ASSEMBLY
The cell body consists of the cell top, membrane filter, feed spacer/ permeate carriers
(optional), shims (optional), O-rings, and cell bottom. Figure 1 illustrates a typical assembly
of the cell body.
Figure 1: Typical Sepa CF Cell Body Assembly
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To assemble the Sepa CF Cell Body:
2. Install the O-rings into the grooves on the cell bottom and wet them with a small
amount of water or the fluid to be processed.
1. Connect the concentrate flow control valve to the cell bottom by wrapping PTFE tape
around the valve’s male NPT end and screwing it into the concentrate outlet port.
Caution: Make sure the O-rings lie flat in the grooves of the cell bottom. Leaking may
occur if the O-rings do not lie flat in the grooves. The O-rings will be cut or crushed when
the system is operating if the O-rings are not installed correctly.
Note: The cell bottom is the half of the cell body that has the four alignment pins. The
cell top has the holes to accept the alignment pins.
3. Place a shim, if needed, in the cavity inside of the inner O-ring.
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4. Install the feed spacer into the central cavity, on top of the shim. The feed spacer must
lie flat and be fully contained within the cavity.
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5. Place a piece of pre-cut membrane over the feed spacer using the four guideposts
to hold the membrane in position. The membrane should be installed with the shiny (or
active) side down toward the feed spacer.
Note: If you are cutting your own membranes, the membrane’s outer edge should fit
between the inner and outer O-rings in the cell body to prevent leakage.
Note: The feed spacer and the permeate carrier look similar and are cut in the same
size. The permeate carrier is thinner and has a tight weave while the feed spacer has
large gridding.
6. Wet the permeate carrier with water or the fluid to be processed and place it into the
cavity in the cell top. The surface tension caused by wetting the carrier will keep it in
place.
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7. Complete the assembly of the cell body by placing the cell top onto the cell bottom.
The alignments holes should fit snugly over the alignment pins in the cell bottom.
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