Petiole holes on each blade and hub are fixed one to one relationship DK45-19 # main fan, if you need to remove it from the blade hub DK45-16 main fan, you must first make marks. Fans in commissioning, operation process, if abnormal noise or current abnormal beating, immediately turn off the fan power to be checked. Main fan maintenance, Akzo main fan, Zibo Blower Factory Co., Ltd. provided by Zibo Blower. Zibo Blower Factory Co., Ltd. (www.zibo-fengji.com) strong, credible, Shandong Zibo fan, ventilation equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Zibo Blower and you hand into the brilliant, for a better future!