1. Thaum xaiv cov dej sib tov valve hloov, txhua tus neeg yuav tsum tau ua tib zoo saib xyuas qhov zoo ntawm cov khoom, xws li seb puas muaj pob, burrs, pores thiab lwm yam teeb meem hauv cov dej sib tov valve. Puas yog cov txheej txheej saum npoo tsis sib xws thiab ci? Yog tias koj kov qhov hloov pauv nrog koj txhais tes, nws puas yuav ua rau tib neeg tsis sib xws? Qhov zoo sib xyaw valve hloov yog du, muag heev thiab tuab.
2. Thaum muas cov dej sib tov valve, koj tuaj yeem ntsuas qhov hnyav ntawm cov khoom. Cov khoom tseem ceeb ntawm cov dej zoo sib xyaw valve feem ntau yog tooj liab ntshiab, uas yuav hnyav heev. Koj tuaj yeem kaw cov dej nkag thiab qhov hluav taws xob ntawm cov dej sib xyaw valve, thiab peb tuaj yeem hnov qhov pom tseeb qhov nqus thaum tig qhov hloov, qhia tias kev sib khi ntawm cov dej sib tov valve yog qhov zoo. Koj tseem tuaj yeem siv paj rwb swab los so cov raj xa dej sab hauv ntawm lub pob valve. Sab hauv ntawm cov khoom zoo yog huv heev thiab tsis muaj khib nyiab.
3. Thaum muas cov dej sib tov valve, koj kuj yuav tsum tau them sai sai rau cov nqi ntawm cov khoom sib xyaw valve, thiab lwm yam, piv txwv li, peb tuaj yeem xaiv cov khoom lag luam hauv chav dej uas muaj npe nrov hauv zos, thiab lawv qhov zoo yuav lav tau ntau dua. Thaum yuav khoom, peb tuaj yeem mus xyuas ob peb lub khw muag khoom ntxiv thiab xaiv cov khoom lag luam pheej yig dua nrog cov khoom zoo tib yam. Thaum yuav khoom, koj kuj yuav tsum paub lub sijhawm lav ntawm cov khoom, thiab sim xaiv cov khoom nrog lub sijhawm lav ntev.