Okwamanje, lapho ukumakaumshini wokuqhumisa amanzi anengcindezi ephezuluiyasulwa, ngenxa yokuthi eminye imisebenzi nayo inezidingo eziphakeme neziphakeme zokuvikela imvelo, indlela yokumaka indiza yamanzi enengcindezi ephezulu iye yavela esikhathini esiyingqopha-mlando, futhi isiwuhlobo lokumaka amazwe aseYurophu nawaseMelika aye aluthanda eminyakeni yamuva.Indlela yokuhlanza, umshini omkhulu wokwakha umshini wokumaka wejethi wamanzi onengcindezi ephezulu.Umshini wokuwasha usebenzisa isistimu ecindezelwe ukwenza amanzi akhishwe emlonyeni.Le jet yamanzi inomthelela onamandla namandla okusika, angangena ngokuqondile kuma-pores we-asphalt ukuze asuse upende wokumaka.I-pavement ehlanziwe ayihlanzwa kuphela indlela yokukhipha i-jet yamanzi enengcindezi ephezulu, kukhona noma yikuphi okusele kopende wokumaka, futhi ngeke kube khona umonakalo, futhi yonke i-pavement izohlanzeka kakhulu.Umshini omncane ojwayelekile wokuhlanza ijethi wamanzi onengcindezi ephezulu uzokhiqiza amanzi amaningi alahlwayo ngesikhathi sokuhlanza.Lawa manzi angase abangele indlela egandaywe ngendlela engahlanzekile noma angene ezimbotsheni zetiyela ukuze abangele umonakalo ezintweni zokugandaywa.Ngakho-ke, inqubo yokuhlanza kufanele ifakwe izinto ezifanele zokuhlanza.Njengamanje, ukuklanywa kwemishini yokuhlanza ijethi yamanzi enengcindezi ephezulu phesheya kuyinkimbinkimbi futhi ifakwe ngokugcwele.Isibonelo, kukhona umshini wokuhlanza ku-nozzle yesibhamu samanzi somfutho ophezulu, ngakho-ke ngeke kuthinte imvelo yomgwaqo.Ingcindezi yesistimu ingabuye ilungiswe ukuze kuzuzwe ukuhlanzwa kwepende yokumaka okuhlukile.