- Qhov loj ntawm qhov haum yuav tsum haum nrog qhov loj ntawm hose. Nws yuav tsum tsis txhob nruj heev thiab yuav tsum tsis txhob xoob heev thiab.
- Yog tias muaj xeb lossis tawg ntawm qhov haum, tsis txhob siv nws.
- Qhov haum yuav tsum tau ntev txaus kom muaj lub clamp sab nraud.
- Yog tias siv rau hauv kev kub siab thiab kub siab, peb xav kom koj xaiv qhov haum nrog spines. Tab sis cov spines yuav tsum tsis txhob ntse heev, los yog nws yuav ua mob rau lub puab raj ntawm hose.
- Fasten cov clamps ua tib zoo thiab refasten lawv yog tias tsim nyog. Lub deformation ntawm clamps yuav ua rau hose to thiab disconnect.