PP pleated water filter sterilization operation guide

The sterilization of the PP pleated water filter is very important for maintenance, but online steam sterilization may damage the filter. Therefore, a set of operating specifications must be strictly followed during sterilization operations to reduce the generation of high-temperature sterilization steam on the PP pleated water filter. of damage. Detection and sterilization operation method: Detect the pressure of steam supply and compressed gas, and set them to the undetermined value. At this time, the pressure value should be set between 1.5bar and 2bar. Open valve a and valve b and purge the steam line until the condensate is completely removed. Open valves c and d until the condensate is completely drained. Slowly open the valve c to increase the inflow of steam, so as to wait for 3 to 4 minutes to further heat the PP pleated water filter. Partially close the exhaust valves b, d, and f, so that the steam containing water droplets is continuously discharged. Open valves i and j respectively to establish a steady flow of steam, allowing condensed material and air in the filter to escape. At this time, pay attention to the pressure gauges p1 and p2, and keep △p(p1-p2) less than 350mbar during filtration. Ensure that all air and condensate are effectively vented through valves b, d, f and j, a continuous stream of steam and water droplets can be seen during this process. The temperature of the steam flowing downstream in the PP pleated water filter element is measured to reach 121.1 °C, and the temperature is guaranteed to be lower than 128 °C, the timer is running, the sterilization time is set to more than 30 minutes, and the pressure value and temperature value during the period must be detailed. Record. After the sterilization is completed, close the steam supply channel and open the valve f to let in the compressed air. After the steam is completely eliminated, close the valves b and d, increase the gas volume of the filter, and maintain the gas flow to cool the whole system until the pressure and temperature gauge shows about 30℃.

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