Vuto la hydraulic la phula la phula losakanikirana nthawi zambiri limakhala lolephera, koma nthawi zina pamakhala kusintha kosasunthika, zolakwitsa zotsutsana ndi zolakwa zake.

Ngati valavu yobweretsera valve sasintha gawo munthawi, limachitika chifukwa cha kutha kwake, masika owonongeka, madontho a mafuta kapena oyenera kuyang'ana mkhalidwe wa pneamuatic ndi Makulidwe a mafuta. Ngati ndi kotheka, mafuta kapena magawo ena atha kusinthidwa.
Pakugwiritsa ntchito nthawi yayitali, valve valve valve station ya phula imatha kuwonongeka kwa valavu yosindikiza ya valavu yopendekera, valavu ya valavu yamphamvu kwambiri, ndikupangitsa kutulutsa kwa gasi ku valavu. Pakadali pano, mphete yosindikiza, mipando yaziwele ndi valavu yozungulira iyenera kusinthidwa, kapena valulic valavu iyenera kusinthidwa mu nthawi.
Chifukwa chake, kuti muchepetse bwino za kulephera kwa zida za phula la asphalt, ndikofunikira kuti mumve chidwi ndi kukonza makina ndi magawo.