There is a hidden danger of abnormal assembly during the assembly of ducted air-conditioning units,such as reverse installation of fan blades and reverse connec-tion of speed level lines of electromotor.While there is currently no reliable detection method for such abnormal assembly in the online inspection process.To eliminate such ab-normal assembly,starting from the analysis on the failure mechanism,and after feasibi-lity study on the scheme,it is determined to perform the scheme of detecting the opera-ting current of unit to determine the reverse installation of fan blades and the reverse con-nection of speed level lines of electromotor.By studying the impact of such abnormal as-sembly and other factors on the operating current of unit,a judgment scheme by current detection is determined,and its reliability is verified,supporting error prevention and foolproof of production.
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