Fan commissioning, testing and operation, should make sure the same direction as the rotation direction of the fan impeller and fan in each case indicated by arrows. After the fan run for three months, it should be maintained BK54 fan, check the fan motor mine safety certificate, add oil; check whether the complete range nameplates and signs; check the impeller is in good condition, fastening the coupling connecting blade impeller and shaft not loose. Fan mine safety certificate, Anshan fan, Zibo Fan Factory Zibo Blower Factory Co., Ltd. by. 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 into the brilliant and you work for a better future!