Thaum siv lub tshuab tua hluav taws carbon dioxide, thov ua tib zoo mloog cov hauv qab no:
1. Ua ntej siv, xyuas tias lub tshuab tua hluav taws xob lub siab valve thiab lub ntsuas siab ua haujlwm raug.
2. Sawv ntsug thaum siv kom tsis txhob nqus cov pa roj carbon dioxide.
3. Ua ntej siv, tig lub tshuab tua hluav taws thiab co nws kom loosen cov hmoov qhuav, ces rub tawm tus pin kev ruaj ntseg.
4. Thaum siv, tuav lub nrawm nrawm nrawm, aiming cov hmoov qhuav ncaj qha rau hauv hluav taws.
5. Tom qab siv, ceev lub siab valve cap kom tsis txhob qhuav hmoov to.
