Tom qab siv txhua qhov chaw, txhua feem ntawm cov tshuab foaming yuav tsum tau muab ntxuav kom tshem tawm cov khoom qab zib thiab av kom tsis txhob txhaws lossis xeb ntawm cov khoom .
Tsis tu ncua xyuas cov haujlwm ua haujlwm ntawm cov kev ua haujlwm txias thiab lubrication system kom ntseeg tau tias qhov kub thiab txias thiab txias thaum lub sijhawm ua haujlwm .
Nquag ntxuav cov nozzles thiab cov kav dej kom tiv thaiv clogging thiab cuam tshuam ntau lawm kev ua haujlwm {}}