Miller Magazine Issue: 127 July 2020

61 COVER STORY MILLER / JULY 2020 Deviations of course go in both directions - with consequences. An over ten- sioned sieve is less flexible and might not operate in the most efficient way. Also it is prone to lose its tension faster. Observations have shown that already after three months of operation, the tension can be down to 55 % of the optimum value. Clearly this has an effect on plant efficiency. If a sieve loosens its ten- sion, the intermediate prod- uct can be guided to the wrong flour quality resulting in decrease of low ash flour extraction. In the said plant, this value dropped by 4%. Also overall yield was nega- tively affected. Loose sieves have an im- pact on energy too as more pneumatic relifts for intermediary product are necessary. That in turn influences product moisture. A reduction of up to 0.8% in moisture content was detected over the inspec- tion period. Regular and professional sieve service is essential for a profitable mill operation and also to safeguard sanitary con- ditions. This is what we offer in our service stations around the globe. After a thorough cleaning, the frames undergo a thermal treatment. In this process 99.9% of germs are removed. The NovaPrime polyamide cloth is conditioned in a climate chamber imitating temperature and humidity of a sifter. Only then it is fitted over the sieve frame which pro- vides for optimum tensioning once in operation. For further information on professional sieve service by Bühler, please contact milling@buhlergroup.com . Professional sieve service by Bühler Our sieve & roll service stations around the world