SCOTTCART INSTRUCTIONS FOR USE
ScottCart Premembrane PP and Sartorius Sartopure IND

INSTRUCTIONS FOR USE
PROCESS | STEP | PROCEDURE | COMMENTS |
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1. Preparation (before first use) | 1.1 Cold water flushing | Direction: In direction of flow Volume: At least 7 gal/10” Flow: 145 gal/m2/hour or 88gal/hr/10” segment Temperature: < 68°F Pressure: 22 psi |
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2. Sterilization | 2.2 Hot water flushing | Direction: In direction of filtration Volume: 3 gal/10” cartridge Flow: 1265 gal/m2/hour Temperature: 140F-149F |
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Sterilization: Hot water | In direction of filtration 30 minutes recirculation Flow: 158-172 gal/m2/hour Temperature: 185°F-194°F |
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Sterilization: Steam | In direction of filtration 30 min. Valves slightly open. Temperature: 249°F |
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Cold water flushing (Cooling) | In direction of filtration. Volume: 26 gallons/30” cartridge Flow: 158-172 gal/m2/hour Temperature: < 68°F |
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3. Filtration | Fill housing |
Open the inlet valve Fill the housing with water/beverage with outlet valve closed and vent valve open. When product reaches vent valve, open outlet valve and close vent valve. |
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Filtration |
Direction: In the direction of filtration |
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Drain housing |
Emptying the water/beverage upstream line and the filter housing with air, water or nitrogen. Open all valves for draining through gravity. | ||
4. Backflush | 4.1 Cold water flushing | See 1.1 | See 1.1 |
4.2 Cold water flushing | Against direction of filtration Flow: Up to 21 psi at 68°F for 2-5 minutes. |
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4.3 Warm water flushing | Only in direction of filtration See 2.2 |
See 2.2 | |
5. Caustic Regeneration | 5.1 Cold Water flushing | See 1.1 | See 1.1 |
5.2 Chemical Regeneration | In direction of filtration 30 min recirculation Flow of 158-171 gal/m2/h Volume: 10gal/30” cartridge Temperature: 140°F-149°F 2% NaOH or KOH or 104°F – 140°F with Aird Destainex-LF |
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5.2 Cold water flushing | See 1.1 |
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5.3 Neutralizing with cold water and acid (as an alternative to 5.2) | In direction of filtration 30 min recirculation Flow of 158-171 gal/m2/h Up to 1% citric, nitric or phosphoric acid |
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6. Hot Water Regeneration | 6.1 Cold Water Flushing | See 1.1 |
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6.2 Warm Water Regeneration | In direction of filtration 15 min recirculation Flow of 88 gal/10”/h Volume: 3gal/10” cartridge Temperature: 100°F-140°F |
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STANDARD CARTRIDGE | |||
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Temperature | ΔP in direction of filtration | ΔP in reverse direction (only prefilters, never membranes) | |
68°F | 72.5 psi | 29 psi | 176°F | 29 psi | 7 psi |
>158°F <203°F | 7 psi | 4 psi | |
Steam >249°F | 4 psi | 4 psi | |
NOTES
- The flushing and sterilization water has to be free of particles. It is recommended to use partly softened or RO water with conductivity of <500µS/cm2 .
- The quality of water used can influence the result of chemical regeneration steps. Hard water in combination with caustic solutions or some cleaning agents can result in precipitation and block the membrane.
- Since water temperatures vary, the maximum differential pressure values stated should not be exceeded. If necessary, reduce the given throughput. (Differential pressure = pressure at the housing bell or inlet side minus the pressure at the outlet of the cartridge housing).
WATER QUALITY PARAMETERS
The following are recommendations for water quality for use with filters. Requirement cleaning water
Silt Density Index (SDI 15) | < 3.0 | Fe, Mn | < 0.1 ppm |
Al | < 0.5 ppm |
Silica | < 10 ppm |
Colloidal Silica | not detectable |
Chlorine | not detectable |
Sum: Ca + Mg | < 70 ppm |
Hardness | < 60 ppm CaCO3 |
Turbidity | < 1 NTU |
Oil | None |
Particles | None |