Xa isignali yangoku ebuthathaka kunye nomgca wokutsala nzima ukuqalisa ukungaphumeleli kwempompo yokubuyisela kunye nokungaphumeleli kwesekethe yesibini kunye nokungaphumeleli kombane kwikhabhinethi yokulawula impompo yomlilo ayinakubangela ukuba impompo yomlilo iqale ngokuzenzekelayo okanye ngesandla, ngoko ke kwimeko yongxamiseko yomlilo, eli nqaku lichaza ukuba ixesha elide unikezelo lwamandla luqhelekile, kungakhathaliseki umlilo ukuba isiphaluka solawulo kwikhabhinethi yokulawula impompo yonakele, impompo inokunyanzeliswa ukuba iqalise ngokuthe ngqo ukuqinisekisa ixesha lokulwa nomlilo. "Isixhobo sokuqalisa unxunguphalo lomatshini" sisixhobo esiqhuba ngokuthe ngqo impompo yomlilo ngesixhobo sokungena ngomatshini.