General Cleaning & Sanitation Guidelines

The following procedure contains general parameters for sanitary spiral element cleaning/sanitation for most food and dairy applications. Depending on individual process streams, equipment, and length of process time, some variations in the cleaning procedure will be warranted. Consult your qualified chemical supplier for cleaning regimes specific to your application. Improper cleaning sequence, chemical concentrations or abnormal temperatures/pressures can significantly reduce the life of the membrane as well as void the element warranty.

Questions can be directed to our Technical Support Department at 1 (800) 279-6337.

Concentrate Displacement and Initial Flush
• Flush the remaining concentrate in the system back to the concentrate tank or to drain.
• Using clean water heated up to 122°F (50°), adequately flush the system, in a non-recirculation mode in order to to remove any remaining build-up. The retentate and permeate should appear clean.
• Perform a complete CIP immediately following shutdown from the process mode.

Caustic Wash
• Circulate warm clean water (120°F-122°F) through the system under standard pressure and flow parameters.
• Add caustic slowly to achieve a pH of 10.8-11.0. Do Not exceed pH 11.0
• Circulate caustic solution for 30 minutes.
• Flush the system to drain with clean, warm water.

Acid Wash
• Circulate warm clean water (120°F-122°F) through the system under standard pressure and flow parameters.
• Add sufficient amount of acid (such as a nitric acid) to achieve a pH of 2.0-2.5.
• Circulate acid solution for 30 minutes.
• Flush the system to drain with clean, warm water.

Sanitation (Caustic/Chlorine Solution)
• Circulate warm clean water (120°F-122°F) through the system under standard pressure and flow parameters.
• Add caustic slowly to achieve a pH of 10.8-11.0. Do Not exceed pH 11.0
• Add chlorine slowly to achieve a level of 150ppm constantly. Do Not exceed 180 ppm
• Circulate the caustic/chlorine solution for 20 minutes only.
• Periodically check and maintain a chlorine concentration of 150ppm.
• Flush the system to drain with clean, warm water.

Synder Filtration believes the information and data herein to be accurate; however, this information is offered in good faith, but without guarantee since the conditions are methods used are beyond our control. Synder Filtration assumes no liability as to the application of the previously mentioned data.