應ying切qie斷duan電dian源yuan。斷duan電dian是shi在zai檢jian修xiu和he保bao養yang設she備bei時shi需xu要yao做zuo的de第di一yi步bu工gong作zuo，這zhe也ye是shi處chu於yu安an全quan角jiao度du的de考kao慮lv，如ru果guo帶dai電dian作zuo業ye是shi非fei常chang危wei險xian的de。因yin此ci在zai對dui鏈lian條tiao輸shu送song機ji進jin行xing潤run滑hua之zhi前qian應ying先xian斷duan開kai電dian源yuan。通tong電dian進jin行xing緩huan慢man運yun行xing。這zhe一yi步bu的de作zuo用yong是shi讓rang剛gang才cai滴di在zai設she備bei上shang的de油you慢man慢man的de流liu入ru到dao設she備bei裏li麵mian，所suo以yi我wo們men進jin行xing緩huan慢man的de運yun行xing
，防fang止zhi剛gang剛gang滴di在zai設she備bei上shang的de油you飛fei濺jian出chu來lai。