4 Operation
Study the instructions carefully and pay special attention to warnings! Always check the Agitator before operation. Alfa Laval
recommends a soft starter for the Agitator to reduce the load on tank and Agitator.
4.4
Cleaning
4.4.1 General Information
The agitator is fitted with a rotating spray ball designed to clean agitator and tank as part of the same process.
The agitator does not require a special cleaning procedure but the process can be integrated in the usual tank cleaning
concept. However, hot caustic cleaning is always recommended.
Maximum operation temperature when the agitator is activated is 90°C.
(applies for e.g. tank CIP and hot water sterilization)
Maximum operational temperature when the agitator is NOT activated is 125°C.
(applies for e.g. steam sterilization)
Ensure that all surfaces in contact with product are totally clean so product is not contaminated.
Pay special attention to:
-
Impeller device surfaces.
-
Surfaces between propellers and shaft.
-
Surfaces around sealing and bushings.
-
Surfaces around weldings.
4.4.2 Cleaning examples
-
Pre-rinse with cold water for approximately 3 minutes.
-
The caustic cleaning step should be made with hot caustic 60-70°C 30 - 45 minutes.
-
The yeast mixer should be running continuously during CIP.
-
The recommended CIP flow rate is 20-25 m3/h at an inlet pressure of:
-
Without aeration: 2,0 bar (2 bar above tank pressure).
-
With aeration: 3-3,5 bar (3-3,5 bar above tank pressure).
-
The cleaning should be made as soon as possible after emptying the tank, while the inside surfaces are still wet.
-
Hot water for approximately 3 minutes.
-
Cold water for approximately 3 minutes.
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Содержание ALTB-SB-20
Страница 1: ...ESE03056 EN6 2020 05 Original manual Instruction Manual ALTB SB 20...
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Страница 40: ...7 Parts list Service kits Ensure totally clean surfaces during mounting Always use original Alfa Laval parts 40...
Страница 43: ...8 Appendix Ensure totally clean surfaces during mounting Always use original Alfa Laval parts 8 3 WPS 43...
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