Okulandelayo yisingeniso esihlobene mayelana nokuthi "ingavulwa kanjani ilokhi yomnyango uma iphukile?": Ungafaka intende yakho endaweni eseduze yelokhi yomnyango, uyithinte ngentende yakho ngenkathi usebenzisa isilawuli kude ukuyishintsha izikhathi eziningana, bese uzama ukuvula umnyango. Uma isasebenza, kufanele uye esitolo sokulungisa ukuze ubhekane nayo. Nazi izizathu ezenza ilokhi yomnyango ingavulwa: 1. Hlola ukuthi idivayisi yokukhiya iyasebenza yini. Uma ingasebenzi, kungenzeka ukuthi isekethe yesistimu yokulawula ephakathi ayixhumene kahle; 2. Uma isebenza, kungaba yindlela yokukhiya. Ukumelana kukhulu, futhi kungase kube nokugqwala; 3. Kungenzeka futhi ukuthi indawo yokukhiya yemoto yokukhiya yomnyango ihambile, futhi lokhu kungalungiswa kuphela; 4. Esinye isizathu ukuthi imoto yokukhiya yomnyango iphukile futhi amandla okudonsa awanele, okudingeka ukuthi kushintshwe imoto.
Okokuqala, hlola ukuthi ilokhi inaso yini isenzo. Uma kungekho senzo, kungase kubangelwe ukuthintana okungekuhle kwesekethe yesistimu yokulawula ephakathi; 2. Uma kukhona isenzo, khona-ke kungenzeka ukuthi ukumelana kwendlela yokukhiya kukhulu. Kubangelwa ukugqwala; 3. Kungenzeka futhi ukuthi indawo yokukhiya yenjini yelokhi yomnyango ihambile. Lokhu kudinga ukulungiswa kuphela esitolo sokulungisa; esinye isizathu ukuthi injini yelokhi yomnyango iphukile futhi amandla okudonsa awanele. Lokhu kudinga ukushintshwa. Injini ihambile.
