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並前往https://www.emsd.gov.hk/filemanager/en/content_296/Good_OnM_Practice_of_Fresh_Water_Cooling_Towers_for_Air-conditioning_Systems.pdf

淡水冷卻塔操作及維修的良好作業 - 機電工程署

water treatment, and cleaning, desludging ... and float valves for proper operation ... (iii) Clean the water distribution pipework including nozzles.

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