Feem ntau, cov ntsiab lus tseem ceeb cuam tshuam rau kev ua haujlwm ib txwm ntawm cov twj muaj kua hluav taws xob muaj raws li hauv qab no.
(1) qhov teeb meem toast. Cov yam ntxwv ntawm cov twj tso kua mis yog tias lub twj tso kua mis thiab lub tshuab ua ke yog ib qho tseem ceeb yog ib qho haujlwm tseem ceeb yog ib qho haujlwm tseem ceeb ntawm kev ua haujlwm ntawm cov twj vov khoom siv.
(2) thaiv kev sib hloov. Thaum ib lub tshuab nqus dej yog daig, ib lub rotor tam sim no ntawm 5-7}}}}}}} lub zog tag nrho yuav tsim tawm ntawm lub pob zeb winding. Yog tsis muaj kev tiv thaiv kev tiv thaiv, cov twj tso kua mis submersible yuav muab hlawv sai sai. Muaj ntau ntau yam rau cov blockitisible twj, xws li impeller jamming, cov neeg siv tshuab foob cov khib nyiab, thiab cov av entanglement.
(3) Lub zog hluav taws xob voltage yog tsawg dhau lossis ntau zaus tsawg dhau.
(4) hnav thiab corrosion. Hnav thiab kua muag yuav zoo heev txo cov kev ua tau zoo ntawm lub twj tso kua mis, ua rau muaj kev txo qis hauv tus nqi txaus, lub taub hau, thiab kev ua tau zoo. Xuas ntawm impeller thiab cov npog npog dej yuav tseem ua rau stalling. Corrosion ntawm submersible twj tso kua mis tsis yog cuam tshuam rau kev ua tau zoo ntawm lub twj tso kua mis, tab sis kuj luv nws lub neej pabcuam
(5) Lub cable yog tawg lossis tawg. Cable breakage thiab tawg tsis tsuas yog yooj yim ua rau hluav taws xob sib zog, tab sis kuj ua rau nws ua haujlwm hauv lub sijhawm ua haujlwm, ua rau tsis muaj dej paug thiab kev puas tsuaj rau lub cev muaj zog.