medicallampbecause:dynamicspeedmatchingorbelt slipspeedtolow;medicallamp Axial flowbladeangleis too smallandinsufficient;head,thepipelineis too longorpipelineright anglebend;medicallamphighsuction lift;the end ofvalves,pipingandimpellerpartially blockedorimpellerdefect;seriousmedicallampoutlet pipeleakage.