要注意液壓升降機氣蝕和溢流噪聲，液壓升降機作業中要時刻注意液壓泵和溢流閥的聲音，如果液壓泵出現“氣蝕”噪聲，經排氣后不能消除，應查明原因排除故障后才能使用。如果液壓升降機某執行元件在沒有負荷時動作緩慢，并伴有溢流閥溢流聲響，應立即停機檢修。操作手要保持穩定，因為每臺設備操縱系統的自由間隙都有一定差異，連接部位的磨損程度不同因而其間隙也不同，發動機及液壓系統出力的大小也不盡相同。
Attention should be paid to the hydraulic lift and overflow cavitation noise, hydraulic lift operation should always pay attention to the hydraulic pump and overflow valve sound, if the hydraulic pump "cavitation" noise, the exhaust can not be eliminated, should be identified to cause after troubleshooting. If a hydraulic lift actuator does not move slowly when there is no load, accompanied by overflow valve overflow sound, should immediately stop maintenance. The operator should remain stable, because the free clearance per device control system there are some differences in the degree of wear, the connecting parts of the different so the gap is different, the size of the output of the engine and hydraulic system are not the same. 

只有使用液壓升降機的操作手認真摸索，修正自己的操縱動作以適應設備的個性，經過長期作業后，才能養成符合設備個性的良好操作習慣。一般機械行業堅持定人定機制度，這也是因素之一。
Only the use of hydraulic lift operator carefully explore, modify their manipulation to adapt to the personality of the device, after long-term operations, in order to develop a good personality in line with the operating habits of

equipment. General machinery industry adhere to the fixed machine system, which is one of the factors.