答：電(dian)梯是一種機電(dian)產品(pin)，出廠產品(pin)安裝合格的電(dian)梯運(yun)行一段時(shi)間就會出現機械(xie)磨損(sun)或電(dian)(dian)(dian)(dian)器(qi)故障造(zao)成停機或門系統或顯示方(fang)面(mian)的(de)(de)故障，為了(le)保(bao)(bao)障電(dian)(dian)(dian)(dian)梯(ti)安(an)全正常運(yun)(yun)行(xing)，確(que)(que)保(bao)(bao)人(ren)們出行(xing)安(an)全，特別是對(dui)外(wai)公(gong)眾使用的(de)(de)電(dian)(dian)(dian)(dian)梯(ti)，更要(yao)(yao)確(que)(que)保(bao)(bao)安(an)全運(yun)(yun)行(xing)，因此，需要(yao)(yao)專業人(ren)定(ding)期(qi)對(dui)電(dian)(dian)(dian)(dian)梯(ti)的(de)(de)機械(xie)和(he)(he)電(dian)(dian)(dian)(dian)器(qi)部(bu)件進行(xing)清潔(jie)、潤滑、調整、檢(jian)查(cha)和(he)(he)更換易損(sun)件。電(dian)(dian)(dian)(dian)梯(ti)的(de)(de)維保(bao)(bao)，法(fa)律法(fa)規明確(que)(que)要(yao)(yao)求(qiu)每15天，要(yao)(yao)對(dui)電(dian)(dian)(dian)(dian)梯(ti)時(shi)行(xing)例行(xing)維保(bao)(bao)，同時(shi)也要(yao)(yao)求(qiu)了(le)電(dian)(dian)(dian)(dian)梯(ti)的(de)(de)季(ji)度(du)保(bao)(bao)，半年保(bao)(bao)，年度(du)保(bao)(bao)的(de)(de)項目和(he)(he)維保(bao)(bao)標準。