2021Year7Month21As soon as I went to work on the morning of the 1st, the company received a phone call from Yuci Cement Co., Ltd. of Zhihai Enterprise Group, reflecting that the external air pressure of the pulverized coal burner in the second-line rotary kiln in its firing workshop continued to drop after use, and the problem was still not solved after the fan was replaced. The company was required to send someone to repair it. If the repair could not be solved, the company would return it directly!

Wei Wei, general manager of the company, attached great importance to this matter and immediately called a meeting between the technical department, manufacturing department and marketing department to discuss it carefully. after sorting out the whole process from design to maintenance and the on-site situation reflected by customers, he believed that the main cause of Yuci's on-site problems was not the company's burner, but he still decided to send Cai fenglin, senior debugging engineer of the company, Jin hailin, director of the manufacturing department, and Gu weiguo, together with sales manager, to Yuco.

A line of three people came to Yuci site. After careful observation and inquiry, and through many on-site tests and investigations by special testing equipment, it was found that the given speed of the fan did not match the actual data of the frequency conversion.（Given maximum speed1500r/min,Actual frequency44Hz）. So selected5Different speed values are used as reference to measure the corresponding data, and the following two sets of data are obtained before and after the adjustment of the fan inverter.

Table1: Measurement data before frequency converter adjustment

Table2: Adjusted measurement data of frequency converter

And when the frequency adjustment is given1450rpmexternal wind pressure26KPaRestore normal use. Yuci Cement issued a "Site Description" signed by the site staff, confirming that the reason for the low external wind pressure is that the frequency displayed by the frequency converter is smaller (distorted) than the actual working condition.,The pressure display of the pulverized coal burner on site is too small, which has nothing to do with the maintenance quality of the burner.The root of the problem has been found and solved smoothly. Yuci Cement is very satisfied with the after-sales service, which increases the possibility of our follow-up cooperation.

After this after-sales service, general manager Wei Wei concluded: in case of trouble, we will not investigate who is responsible first, and we will be anxious for the urgent needs of the users and the customers.The attitude of silver flame service is to deal with the problems of households as their own. When all the problems are solved, customers show a satisfied smile, is our ultimate goal. In addition, all our staff need to observe more, learn more, practice basic work hard, be familiar with their own products, and be clear about the performance of other products matched with them. Solid professional skills and rich working experience can solve problems for customers and let themselves and the company stand in the decisive place!